Rgv250 low rpm sluggish

[glukasil]

Hi guys. Just got a new toy...the engine was rebuilt and broken , airbox cleaned....if you accelerate fast it boggs but goes , once it reaches higher rpms it goes hard even before the powerband...
Previous owner said it was same before the rebuilt..... What is most probable problem?
Thanks a lot.....

[Asher]

These bikes need good plugs and good batteries. Otherwise have a good look at the carb jets, air solenoids and power valve setup.

[Steve Gauge]

compression test to eliminate issue with engine (you can get cheap ones for $40) , then do what above person just said carbs powervalves and plugs ,theres not to much to them really

[glukasil]

What is the easiest way to check the powervalves setup? Thanks.

I ll do the compression and the plugs tomorrow but have no idea how to check the powervalves....

[FJRider]

"Low RPM" issues ... is the clue.

8-11,000 RPM is the zone you need for any real (fast) response. Below that ... don't expect too much ..

[glukasil]

"Low RPM" issues ... is the clue.

8-11,000 RPM is the zone you need for any real (fast) response. Below that ... don't expect too much ..

i meant it is very sluggish.....it could be delay for a sec or 2 before it revs up.

[glukasil]

I ve tried new plugs , it helped but not entirely. Also i installed a petrol filter which was totally fine on kdx200 but this bike could not run with it... Is there a problem with petrol pump?
One more thing....the idle is 780-800 , should i get it higher?
Thanks ....

[Akzle]

an 88.?

Crabs.

Mulsion choobs ovulating.

Air pilots.

Engine is probably worn enough you might be looking at bennie and the jets.

[glukasil]

an 88.?

Crabs.

Mulsion choobs ovulating.

Air pilots.

Engine is probably worn enough you might be looking at bennie and the jets.

Cant understand ..is it a piss take or specific slang?
Engine was just rebuilt and broken in...7

[husaberg]

Cant understand ..is it a piss take or specific slang?
Engine was just rebuilt and broken in...7

Ask him if he has an actual motorbike.
Then ask him what the fuck he is doing on a motorbike site giving shit advice.

Also remind him this is a technical section not rant and rave.
Then suggest he goes back to what he does best (Humping goats)

When you say rebuilt.... I think you need to be specific as to what was done and by who.

[Drew]

This is what they do with a dropped powervalve. I always start with a compression test on these things.

[FJRider]

Engine was just rebuilt and broken in...7

During SOME rebuilds ... the budget dictates what is done. Not all that should be done (or at least checked) ... is actually is done.


Owner rebuilds often lead to issues ... not long after completion and back on the road ....

Broken ... is (it seems) the appropiate word.

Also ... after a rebuild of the bad bits ... the bits that were not as bad ... get more pressure on them when the bad bits get fixed.

This can lead to the "not as bad" bits ... being the issues at fault.


250cc motorcycles need all the help they can to perform as expected with NEW bike performance. Your's is not new. How much time/effort/money do you want to sink into it to make it perform "As New" ... ???

[Asher]

I ve tried new plugs , it helped but not entirely. Also i installed a petrol filter which was totally fine on kdx200 but this bike could not run with it... Is there a problem with petrol pump?
One more thing....the idle is 780-800 , should i get it higher?
Thanks ....

These bikes dont use a fuel pump, the fuel is gravity/vacuum fed. Inline fuel filters can cause the carb bowls to run dry but that doesnt sound like your problem. The factory fuel filters are on the peacock and little ones you put inside the fuel lines where it meets the carb.

Idle should be ~1300rpm

Also what rpm are you experiencing the flatspot?

[glukasil]

It is difficult to say what was done with engine,..the guy worked as engine mechanic and it was his own bike , not for a sale ....i have no reason not to trust him. He said the bike had same behavior before and probably carbs need adjusting.... the bike was unginished project.

I just wanted to check things that easy to do before digging dipper.... As i stated above , bike has huge acceleration when it hits powerband....it is just slow to rev up til some point 2000-2500 rpm.

[glukasil]

These bikes dont use a fuel pump, the fuel is gravity/vacuum fed. Inline fuel filters can cause the carb bowls to run dry but that doesnt sound like your problem. The factory fuel filters are on the peacock and little ones you put inside the fuel lines where it meets the carb.

Idle should be ~1300rpm

Also what rpm are you experiencing the flatspot?

Sorry mate , what is a peacock? i ll try to increase the idle up to 1300 , hope it will help...

Flat spot is up to 2000+ it never boggs completely , just slow increase in rpms....for example it is difficult to go steep hill from 0.....

[FJRider]

Sorry mate , what is a peacock? i ll try to increase the idle up to 1300 , hope it will help...

Flat spot is up to 2000+ it never boggs completely , just slow increase in rpms....for example it is difficult to go steep hill from 0.....

Petcock valve ...

[Asher]

Sorry mate , what is a peacock? i ll try to increase the idle up to 1300 , hope it will help...

Flat spot is up to 2000+ it never boggs completely , just slow increase in rpms....for example it is difficult to go steep hill from 0.....

The fuel tap.

Hopefully this dyno run on a vj21 helps to show that 2T 250s make bugger all power under 8000 rpm and almost none at low rpm:
313972

Maybe its running right and your expectations are wrong....

[FJRider]

Sorry mate , what is a peacock? i ll try to increase the idle up to 1300 , hope it will help...

Flat spot is up to 2000+ it never boggs completely , just slow increase in rpms....for example it is difficult to go steep hill from 0.....

If you set idle at 1300 ... 2000 is not much higher.


Ride it like you stole it ...


You do not ride a 250cc bike like a 750 cc bike ... nor expect they will perform the same.


The answer is in your right hand.

USE that right hand.

[glukasil]

The fuel tap.

Hopefully this dyno run on a vj21 helps to show that 2T 250s make bugger all power under 8000 rpm and almost none at low rpm:
313972

Maybe its running right and your expectations are wrong....

Who knows... Is there anyone who owns/owned the bike who is willing to do a test ride? Thanks

[Akzle]

this, then.

also, learn carbs.



Maybe its running right and your expectations are wrong....

[FJRider]

Hopefully this dyno run on a vj21 helps to show that 2T 250s make bugger all power under 8000 rpm and almost none at low rpm:

Maybe its running right and your expectations are wrong....


"Low RPM" issues ... is the clue.

8-11,000 RPM is the zone you need for any real (fast) response. Below that ... don't expect too much ..

I said that already ... post #5 ...



But .... I ... couldn't possibly be right ... right .. ??

With the the OP's vast experience in riding a huge variety of motorcycles ... he would know best ... right ... :killingme

[Laava]

an 88.?

Crabs.

Mulsion choobs ovulating.

Air pilots.

Engine is probably worn enough you might be looking at bennie and the jets.

Ironically, this is probably the best advice you have ever given on KB.
Were you thinking about goats?

[FJRider]

Ironically, this is probably the best advice you have ever given on KB.
Were you thinking about goats?

Was probably acting (as) the goat ...

[caspernz]

Was probably acting (as) the goat ...

Just remember some days the goat is on top :innocent::facepalm:

[FJRider]

Just remember some days the goat is on top :innocent::facepalm:

It is better to give ... than recieve .. :shutup:




apparently .. <_<

[husaberg]

Just remember some days the goat is on top :innocent::facepalm:
Its highly unlikely the Goat comes first.

[FJRider]

Its highly unlikely the Goat comes first.

Speaking from your vast experience in this (er) field ... ?? <_<

[caspernz]

It is better to give ... than recieve .. :shutup:




apparently .. <_<


Its highly unlikely the Goat comes first.

And either way it's still not a pretty picture :eek5:

All we need now is a dancing frog and the OP will have worked out an old quarter litre smoker needs to make lotsa ring-ding-ding sound before it wants to get up and boogie :crazy:

[husaberg]

Speaking from your vast experience in this (er) field ... ?? <_<
Who are ewe kidding
I have No field experience I just have read the victim impact reports from the SPCA regarding axhole.
It seems the impact was very small..........
Tiny:laugh:

[FJRider]

And either way it's still not a pretty picture :eek5:

A fucking discusting picture actually ... I have to wash my imagination out ... with (lots of) beer ...


All we need now is a dancing frog and the OP will have worked out an old quarter litre smoker needs to make lotsa ring-ding-ding sound before it wants to get up and boogie :crazy:

I think ... more chance of finding a dancing frog ... <_<

[FJRider]

Who are ewe kidding
I have No field experience I just have read the victim impact reports from the SPCA regarding axhole.
It seems the impact was very small..........
Tiny:laugh:

You can't be a pile driver ... if you only have a pencil ... ;)


apparently .. :yawn:

[husaberg]

You can't be a pile driver ... if you only have a pencil ... ;)


apparently .. :yawn:

Some definitely need lead............plus some sharpening up. like ol ax.
Who would have thought such a small prick would belong to such a thick prick.

[Drew]

Oh for fuck sakes. Are you cunts so fucken threatened by the fact that he doesn't give a shit what you think, that you have to behave like bitches and gang up every time he posts?

[FJRider]

Oh for fuck sakes. Are you cunts so fucken threatened by the fact that he doesn't give a shit what you think, that you have to behave like bitches and gang up every time he posts?

We know he does ... ;)

[caspernz]

A fucking disgusting picture actually ... I have to wash my imagination out ... with (lots of) beer ...

My mind is a filthy place anyway, but a little bit of single malt now and then keeps the bugs at bay :eek5:

Maybe Drew needs a little as well :crazy:

[husaberg]

Oh for fuck sakes. Are you cunts so fucken threatened by the fact that he doesn't give a shit what you think, that you have to behave like bitches and gang up every time he posts?

Maybe he should think more and post less cunty posts about raping peoples kids then.
Or he could just fuck off to Perth Streetbikes
If you feel sorry for him maybe you should consider adopting him.

[Kickaha]

Maybe he should think more and post less cunty posts about raping peoples kids then.
Or he could just fuck off to Perth Streetbikes

With the posts you aim at him you're just as much of an annoying cunt as he is

[husaberg]

With the posts you aim at him you're just as much of an annoying cunt as he is

Maybe he wouldn't be aimed so much by so many people if he didn't stick his head where it doesn't belong quite so often.

[FJRider]

My mind is a filthy place anyway,

We've noticed .. :whistle:


but a little bit of single malt now and then keeps the bugs at bay :eek5:

Keeping the right spirit is achievable ... but ... :beer:


Maybe Drew needs a little as well :crazy:

Probably doesn't drink ... :whocares:

[caspernz]

I do kinda feel for poor Axlerod, how he gets all kinds of grief...well both times each week when I drop in here...and it reminds me of some old song which probably is apt for now, something along the lines of "He got stoned and he missed it" from Dr Hook maybe :laugh:

[Drew]

Probably doesn't drink ... :whocares:
YOU FUCKEN TAKE THAT BACK!

I'll take a lot of abuse, but you leave my fucken religion out of it cunt.

[husaberg]

Probably doesn't drink ... :whocares:


YOU FUCKEN TAKE THAT BACK!

I'll take a lot of abuse, but you leave my fucken religion out of it cunt.

Enter ED and Unstucks long lost son.....................:lol:
I am not surprised you will take a lot of abuse Drew, cause you are clearly a delusional cunt who thinks axholes persecuted.

[FJRider]

...I'll take a lot of abuse,

We've noticed that ... you have indeed ...


but you leave my fucken religion out of it cunt.

Was that the church of Johnny Walker .... or the chapel of Jim Beam ... ???


or ... one of the old Scottish churches ... ???

[Drew]

We've noticed that ... you have indeed ...



Was that the church of Johnny Walker .... or the chaple of Jim Beam ... ???


or ... one of the old Scottish churches ... ???

My god turns out to be German.

[Drew]

Enter ED and Unstucks long lost son.....................:lol:
I am not surprised you will take a lot of abuse Drew, cause you are clearly a delusional cunt who thinks axholes persecuted.

Listen up ya creepy little stalker bucket fag. I'm not defending anyone, I'm attacking.

[FJRider]

My god turns out to be German.

Just a pity it wasn't Greek ... it might be cheaper now ... <_<

[husaberg]

Listen up ya creepy little stalker bucket fag. I'm not defending anyone, I'm attacking.

Fag lol you must have been smoking Axhole to often.
If axholes now your bitch, just tell us straight up you homo.
Plus You never said Cunt once in that whole entire post you soft prick.
Attack with a wet handbag at best. I said you were delusional, you are not meant to prove me right.

[Madness]

My god turns out to be German.

313979

Sophistication.

[FJRider]

Sophistication.

cheap ..............................

[Drew]

Fag lol you must have been smoking Axhole to often.
If axholes now your bitch, just tell us straight up you homo.
Plus You never said Cunt once in that whole entire post you soft prick.
Attack with a wet handbag at best.

You're not fit to be called a cunt.

[husaberg]

You're not fit to be called a cunt.
Better, but still pretty faggy considering you are practically an Australian now.(Plus have a lisp)




and shag axholes

[Kickaha]

Pity the useless moderators dont clean this shit out of mechanical anymore,, how much crap any of you fucktards has posted has actually helped out the OP ?

[bogan]

Pity the useless moderators dont clean this shit out of mechanical anymore,, how much crap any of you fucktards has posted has actually helped out the OP ?

Looked good when the talk started to go about powervalves.

Not had experience with an RGV, but my CR and KR1 did similar things when the powervalves were malfunctioning and ended up stuck in open position.

What style powervalves do they run?

[husaberg]

Looked good when the talk started to go about powervalves.

Not had experience with an RGV, but my CR and KR1 did similar things when the powervalves were malfunctioning and ended up stuck in open position.

What style powervalves do they run?

Blades they have a history of lunching motors on the RGV

[buggerit]

Oh for fuck sakes. Are you cunts so fucken threatened by the fact that he doesn't give a shit what you think, that you have to behave like bitches and gang up every time he posts?

+1, ............................

[Drew]

Looked good when the talk started to go about powervalves.

Not had experience with an RGV, but my CR and KR1 did similar things when the powervalves were malfunctioning and ended up stuck in open position.

What style powervalves do they run?
VJ21 runs a two stage (closed and open). Cable operated via servo.

[bogan]

VJ21 runs a two stage (closed and open). Cable operated via servo.

First step is probably verifying the servo moves em then, does it cycle on key-on?

[husaberg]

VJ21 runs a two stage (closed and open). Cable operated via servo.

That's a bit ass backwards Drew
the VJ21 was single stage. ie Open or Closed

the VJ22 was two stage.
Closed open and Middle.
These gave more trouble. As they had more parts.
313981
313982

[Drew]

First step is probably verifying the servo moves em then, does it cycle on key-on?Yeah, unless it has an aftermarket CDI. Some reason they will often not do it. Or a sketchy battery.


That's a bit ass backwards Drew
the VJ21 was single stage. ie Open or Closed

the VJ22 was two stage.
Closed open and Middle.
These gave more trouble.
As they had more parts.Closed is one stage, open is the other. VJ22 was marketed as three stage.

[husaberg]

Yeah, unless it has an aftermarket CDI. Some reason they will often not do it. Or a sketchy battery.

Closed is one stage, open is the other. VJ22 was marketed as three stage.

You better tell Suzuki.:lol:
Because I have never seen a reference from them anywhere on the net.
Plus I just googled as well
Edit I found one.
http://www.apriliaforum.com/forums/showthread.php?207652-Powervalves-for-sell/page2

Edit again Sorry Drew they actually did
313983

[Asher]

This is speaking from experience on my vj22, the vj21 should be similar.
The power valves should cycle either when you turn on the ignition or start the engine.
There is a grey wire by the battery, touch that against the -ive terminal and the valves should open half way. There should be some markings on the pulley at the cylinder that show when the valves are closed, %50 and open, these arent perfect but are a good indication.
When i want to be %100 sure mine are setup well i take the chambers off and feel the valve position up the exhaust port.

[FJRider]

Pity the useless moderators dont clean this shit out of mechanical anymore,, how much crap any of you fucktards has posted has actually helped out the OP ?

The OP complains his 250cc two stroke motorcycle is sluggish to accelerate from 2000 rpm.


Reccommended idle rpm was stated as being 1500 rpm.


What conclusion would you arrive at from that ... ??



Do you have a helpful suggestion ... that has not ALREADY been suggested ... ???

[Kickaha]

The OP complains his 250cc two stroke motorcycle is sluggish to accelerate from 2000 rpm.

Reccommended idle rpm was stated as being 1500 rpm.

What conclusion would you arrive at from that ... ??
He doesn't know how to ride one

[FJRider]

He doesn't know how to ride one

MY conclusion as well ... hence the "Off topic" comments ...

To the OP ... ride it like you stole it ...

[mossy1200]

I think OP should let someone that has owned a 2smoke 250 take it for a ride.
rg250f was the last one I tried and riding it under 4k is riding it the wrong way.

[FJRider]

I think OP should let someone that has owned a 2smoke 250 take it for a ride.
rg250f was the last one I tried and riding it under 4k is riding it the wrong way.

I have ridden a few of them ... riding under 7000 rpm was the wrong way.


My FJ goes everywhere at 4500 ... no issues ... but goes at 7500 ... :wings:

[glukasil]

update. increased the idle....easier to ride but still no torque on low revs. if i stall on steep hill , almost impossible to take off.. on 1st gear even pre-reving engine and playing with clutch it has no guts and cuts off ....my kdx200 and 220 have way way more torque on low revs.

the power valves servo moves after 5000-6000 revs.... is it normal?

had no time to do dipper investigation , day work , traffic , dark , no garage :(

thanks.

[mossy1200]

I have ridden a few of them ... riding under 7000 rpm was the wrong way.





True but 7k on a 2 smoke in town is going to end in tickets.
Not sure about 250 later than F model but 4k is ok in town but you would want find some bigger spaces every so often to visit mr P Band before the plugs fouled up.

[FJRider]

update. increased the idle....easier to ride but still no torque on low revs. if i stall on steep hill , almost impossible to take off.. on 1st gear even pre-reving engine and playing with clutch it has no guts and cuts off ....my kdx200 and 220 have way way more torque on low revs.

the power valves servo moves after 5000-6000 revs.... is it normal?

had no time to do dipper investigation , day work , traffic , dark , no garage :(

thanks.

It is a 250cc two stroke. Horsepower is not the issue. (as it barely exists)


GET YOUR FULL ... AND GET A BIGGER BIKE.

[FJRider]

True but 7k on a 2 smoke in town is going to end in tickets.
Not sure about 250 later than F model but 4k is ok in town but you would want find some bigger spaces every so often to visit mr P Band before the plugs fouled up.

Not you or ME that pays the ticket ... :lol:


Oh the joys of 2 strokes .... :killingme

[glukasil]

It is a 250cc two stroke. Horsepower is not the issue. (as it barely exists)


GET YOUR FULL ... AND GET A BIGGER BIKE.

i have kdx220 at the moment......i have something to compare...there is something wrong with the rgv....

i have one more project bike fj1200 :) needs some paintwork first.

[FJRider]

i have kdx220 at the moment......i have something to compare...there is something wrong with the rgv....


yep ... it's a suzuki ...


i have one more project bike fj1200 :) needs some paintwork first.


Just ride it ... nobody notices an FJ with a good paint job. NOBODY cares about one with a bad paint job.

But ... on an FJ1200 ... you can sit on 160 km/hr all day (barely above idle rev's).... and you never lack in torque or horsepower ...

YOU decide which bike you want to ride ...

[Drew]

yep ... it's a suzuki ...




Just ride it ... nobody notices an FJ with a good paint job. NOBODY cares about one with a bad paint job.

But ... on an FJ1200 ... you can sit on 160 km/hr all day (barely above idle rev's).... and you never lack in torque or horsepower ...

YOU decide which bike you want to ride ...
Scary mo'fuckers to wheelie though. More the landing than the wheelie itself.

[FJRider]

i have kdx220 at the moment......

Remember ... the GEARING on a KDX 220 is vastly different to your RGV250.

[FJRider]

Scary mo'fuckers to wheelie though. More the landing than the wheelie itself.

Are they on the LAM's list ... I haven't looked ... ??

[Asher]

Are they on the LAM's list ... I haven't looked ... ??

None of the KRs/RGVs/RS's/TZRs/NSRs are and there "variants". That probably means the vj21 wolf isnt too although i guess it depends on whats on the rego label.

[FJRider]

None of the KRs/RGVs/RS's/TZRs/NSRs are and there "variants". That probably means the vj21 wolf isnt too although i guess it depends on whats on the rego label.

I did look ... :yes:

Yep ... it's on the list. The WRONG list.

[glukasil]

thanks for all you guys.....it seems i need professional help.... and i dont mean psychiatrist.... who would you recommend? thanks.

[FJRider]

thanks for all you guys.....it seems i need professional help.... and i dont mean psychiatrist.... who would you recommend? thanks.

Get somebody with a full license (and a fair amount of experience riding 2-strokes) to ride it and state THEIR opinion of the "Problem" ...

[glukasil]

Get somebody with a full license (and a fair amount of experience riding 2-strokes) to ride it and state THEIR opinion of the "Problem" ...

i ride kdx 220.....you forgot......with fair amount of experience...

[Kickaha]

i ride kdx 220.....you forgot......with fair amount of experience...

Not even close to being the same thing

[FJRider]

i ride kdx 220.....you forgot......with fair amount of experience...

What you notice with a dirt bike gearing ... is quite different to a road race imitation ...


Did you not notice the "Full license" bit ... ??? :shifty:

[george formby]

Last time I rode an RGV 2fiddly pulling away needed a bit of clutch action. Bike was very well sorted. K'in hilarious actually. Had to feed the clutch out and keep the revs up. Or keep the revs up and wheelie. Bit of a knack. No comment on the OP's bike. A professional overview would give piece of mind.

Get a bigger bike? A lard arsed lazy behemoth that's fast in a straight line eventually? How exciting.:laugh:

Na, horses for courses, but wee 2t screamers are hilarious. Not tourers.