Suzuki rg150 help?

[Cameron_Fincher]

Hey my names cameron, i purchased a rg150 around 4 months ago, its been running like a charm untill a couple of weeks ago, it hasnt been going as fast as it should, Normal rg's should do 80 in second, 120 in 3rd, 140 in 4th and so on but mines been doing 60 in second, 100 in 3rd, and at 120k's it sort of loses power..? the rev's stay up, but it barely gains speed. i just had it in for a full servo, new air filters, gearbox oil, sparky etc .

im currently running 91 octane , racing tts 2 stroke oil and i think standard gearbox oil

all the suzuki shop told me to do was run 95 octane because its a high perfomance 2 stroke but im unsure if that will solve the problem?

[Str8 Jacket]

First things first, change the spark plug and then see if that helps. If it doesn't help then you're about to learn alot about the joy's of RG150 mechanics!

[Cameron_Fincher]

First things first, change the spark plug and then see if that helps. If it doesn't help then you're about to learn alot about the joy's of RG150 mechanics!

the suzuki shop changed it when i took it in for a full service

[Str8 Jacket]

the suzuki shop changed it when i took it in for a full service

What did this "full service" involve? Do you have a sheet that shows what they did? If you trust them to look at it again get them to do a compression test and go from there... It may need decoking but if its been run on TTS it should be OK. Check the power valves as well...

[YellowDog]

If your revs are up and your speed is not, then your clutch is slipping.

There should be quite a bit of adjustment on the cable.

[Str8 Jacket]

If your revs are up and your speed is not, then your clutch is slipping.

There should be quite a bit of adjustment on the cable.

Now thats a good point! Im just used to blowing shit up!

[Cameron_Fincher]

What did this "full service" involve? Do you have a sheet that shows what they did? If you trust them to look at it again get them to do a compression test and go from there... It may need decoking but if its been run on TTS it should be OK. Check the power valves as well...

Cleaned and serviced air filter as required..Adjusted mixture.Replaced spark plug.Adjusted and lubricated rear drive chain. Adjusted brakes.Checked steering head bearings.Changed gear box oil. Removed power valve cover and checked tolerences.

If your revs are up and your speed is not, then your clutch is slipping.

There should be quite a bit of adjustment on the cable.

When im riding the bike it Seems fine, but the clutch cable has caused me some problems, because it has stretched to the point i cant be adjusted any more, it will need replaced but i dont see how the clutch would affect the speed (i dont know much about bikes thats all)

and thanks for the help u two

[YellowDog]

If your cable has been adjusted all the way out, then you probably need a new clutch plate.

Best thing to do is to confirm that it is actually the clutch that is the problem. Why don't you test it on a hill. Go half way up the hill at 4000 rpm and then open it up and see what happens. If the revs rise and the speed doesn't, it is your clutch. If it starts to die on you, then we can start looking at other areas.
Good luck.

[koba]

Cleaned and serviced air filter as required..Adjusted mixture.Replaced spark plug.Adjusted and lubricated rear drive chain. Adjusted brakes.Checked steering head bearings.Changed gear box oil. Removed power valve cover and checked tolerences.


When im riding the bike it Seems fine, but the clutch cable has caused me some problems, because it has stretched to the point i cant be adjusted any more, it will need replaced but i dont see how the clutch would affect the speed (i dont know much about bikes thats all)

and thanks for the help u two

It may be adjusted too tight.

The clutch controls the connection between the gearbox and engine, If it is slipping it is like riding with your hand on the lever, the engine speed increases without the road speed increasing.
You do this on purpose every time you take of from a standing stop using the clutch, it is designed to allow some slippage which you control with the lever.
When it slips by itself with the lever right out it means somthign is wrong.

It should be adjusted so there is a bit of "freeplay" this means that the inner cable should not be totally tight.

Back off the adjustment so you can feel a loosness they you begin to pull in the lever, it should be loose for a wee bit and then meet some resistance.

There is adjustment at both ends.

Make sure the cable is lubed and sliding well.

It COULD be worn out or have problems related to the gearbox oil but try adjusting it first.

[koba]

If your cable has been adjusted all the way out, then you probably need a new clutch plate.

Best thing to do is to confirm that it is actually the clutch that is the problem. Why don't you test it on a hill. Go half way up the hill at 4000 rpm and then open it up and see what happens. If the revs rise and the speed doesn't, it is your clutch. If it starts to die on you, then we can start looking at other areas.
Good luck.

Good advice, draggin the rear brake can work if you don't have a hill handy.

[Cameron_Fincher]

When i start the bike and go to put it in gear it stalls if i dont give it a bit of acceleration, ive got told its because of my clutch cable and that i need a new one, would that cause it to slip and not reach its max speed?

[Str8 Jacket]

When i start the bike and go to put it in gear it stalls if i dont give it a bit of acceleration, ive got told its because of my clutch cable and that i need a new one, would that cause it to slip and not reach its max speed?

Yep, sure would! Best to replace it mate!

[Cameron_Fincher]

ohh so thats been my problem all along?

[YellowDog]

ohh so thats been my problem all along?

Hey Cameron, I suspect that it is not the cable that is your problem, though I could be wrong.

What I am understanding is that when you pull the clutch lever to put the bike in gear, it stalls. This being the case, it suggests that your adjustment is as far as it can go to stop the clutch slipping. Infact it is now too far and hence the bike stalls.

I suspect that if you replace the clutch plate, then you will need to adjust the clutch cable the other way as the stalling will then be far worse (i.e. the clutch lever will be doing virtually nothing).

Do the test first by dragging the back brake or up a hill to see if it is actually slipping.

[McWild]

all the suzuki shop told me to do was run 95 octane because its a high perfomance 2 stroke but im unsure if that will solve the problem?

Sounds like the Suzuki shop are full of shit.

I have compared 95 and 91 on the RG multiple times. There is no difference.


As people above have said, work out if it's the clutch or cable first. A good mechanic will make a new cable cheap as chips. If it is the plate slipping then a new clutch kit will make the world of difference.