Page 2 of 3 FirstFirst 123 LastLast
Results 16 to 30 of 44

Thread: Bike dropping cylinders?

  1. #16
    Join Date
    6th May 2012 - 10:41
    Bike
    invisibike
    Location
    pulling a sick mono
    Posts
    6,054
    Blog Entries
    4
    Quote Originally Posted by Madness View Post
    There was once this epic battery thread. I'd post a link but some of the technology discussed in this thread was of such a commercially sensitive nature that it had to be deleted. Before it's removal, the thread clearly established that Yuasa motorcycle batteries are in fact the best motorcycle battery that money can buy.

    You're welcome
    i dunno bro, i've heard that those shorais are pretty trick...

  2. #17
    Join Date
    28th January 2015 - 16:17
    Bike
    2000 Ducati ST2
    Location
    Lower Hutt
    Posts
    1,273
    +1 on the Yuasa's, I have had nothing but good service from them.

    If you don't have the coin then there's the Katana battery line, they're basically Yuasas, but made with recycled materials. Running one in the Ducati now, have beaten the hell out of it over winter (repeated discharges due to CDI issues, standing for a week or two, etc etc), still going strong.

    My post earlier... yeah it went on a bit, but if you've found a split fuel hose I'd say it's worth going over as much as possible. Check everything, be sure.

  3. #18
    Join Date
    19th November 2015 - 16:55
    Bike
    Aprilia RS125
    Location
    Auckland
    Posts
    88
    UPDATE:

    So managed to check the valves, and was rather surprised with the results. OEM settings are meant to be .13-.19 for intake, and .20-.26 for exhaust.

    INTAKE:
    1 - .152/ .152
    2 - .127/ .127
    3 - .127/ .102
    4 - .102/ .102

    EXHAUST:
    1 - .203/ .279
    2 - .203/ .203
    3 - .203/ .203
    Biiiiit out of whack to say the least (assuming they should all be identical)

    @OddDuck: Thank you for all the suggestions. Will start cracking away at those
    @Madness: thanks! I'll take a look now. absolutely over Motobatt haha.
    @Akzle: Glad to have been of service :P

    Thankfully the boys at the workshop she's now stored at have given permission to completely strip the thing, so i'll be able to check absolutely everything and hopefully get a running bike out of it!

  4. #19
    Join Date
    24th June 2004 - 17:27
    Bike
    So old you won't care
    Location
    Kapiti
    Posts
    7,880
    I would also suggest that you fit an earth rail bonded to the chassis and run and extra earth to the CDI mount and the engine cases. Also Instruments if there is a place to ground them. As they age, using the chassis is not so reliable.

    Any battery providing 8V is rooted. Nothing will work properly until you have sorted that out.

    Interesting project btw…

  5. #20
    Join Date
    19th November 2015 - 16:55
    Bike
    Aprilia RS125
    Location
    Auckland
    Posts
    88
    UPDATE: Still no real success.
    re-assembled the engine after a check up/ fix/ replace of a few small things, threw tank on and tried to turn over.

    during this attempt i noticed a lot of fluid gushing out of the carb bowls... crap.
    well. Time to order some new carb- bowl gaskets LOL. shame they're so damn expensive in nz (cheapest I was quoted was $35 a piece)

    So no idea if the bike will run, as it's not getting fuel. If after the gaskets are replaced she still wont start up I'll be throwing a new pulse generator in, if that fails then will take a good hard look at that damn loom. Not going to deny it's been hacked up to a point beyond recognition by its previous owner/s... So wouldn't surprise me in the slightest if that ends up being the cause.
    If even after that I cannot get the old girl to run... well then... suppose It'd be time to look for a professional.

    In other news. flatmate had another domestic. destroyed my fairings. looks like I'm ordering some from china! Just what I needed!!

  6. #21
    Join Date
    6th May 2012 - 10:41
    Bike
    invisibike
    Location
    pulling a sick mono
    Posts
    6,054
    Blog Entries
    4
    Quote Originally Posted by STEPHASAUR View Post
    In other news. flatmate had another domestic. destroyed my fairings. looks like I'm ordering some from china! Just what I needed!!
    you mean THEY are ordering, right.

    Carb reco kit. Smebike.

    Insert witticism about mating in your flat.

  7. #22
    Join Date
    15th February 2005 - 15:34
    Bike
    Katanasaurus Rex
    Location
    The Gates of Delirium
    Posts
    9,020
    The bike is a dog and lemon mutation.

    Get rid of it.

  8. #23
    Join Date
    19th November 2015 - 16:55
    Bike
    Aprilia RS125
    Location
    Auckland
    Posts
    88
    She's going halves on it. better than not at all I suppose.

    And nope. I was dumb enough to purchase it, i'll endure a little longer. TBH it hasn't cost much at all so far, just hours of agony, which is still experience I wouldn't have otherwise gotten. Not going to deny I have been scrolling the internet for a replacement however...
    On a positive a mate has lent me a little 125 cbr for the last few months, so still getting the daily commute on a bike

  9. #24
    Join Date
    28th January 2015 - 16:17
    Bike
    2000 Ducati ST2
    Location
    Lower Hutt
    Posts
    1,273
    Sucks about bad flatties doing stupid shit like that.

    You'd said earlier that it was sparking OK - is it still sparking?

    If you're getting petrol leaking from the carb bowls - surely the bike is getting gas? Try cranking it and then if no start, pull the plugs. If they're wet with petrol then that isn't the problem.

  10. #25
    Join Date
    5th April 2004 - 20:04
    Bike
    Exxon Valdez
    Location
    wellington
    Posts
    13,381
    Does the bike only have three sets of exhaust valves? They don't have to be identical at all. Each one just needs to be within spec.

  11. #26
    Join Date
    28th August 2012 - 14:06
    Bike
    wr450f
    Location
    Christchurch
    Posts
    500
    If one of my flatmates even touched any of my bikes....

    Get the cunt to pay for all of it, the damage that SHE did.
    Quote Originally Posted by Akzle View Post
    which brings me back to point Z. - use premium fuel.
    Quote Originally Posted by ducatilover View Post
    And the right plugs. And condoms.
    Quote Originally Posted by Akzle View Post
    never really believed in em. which i suppose is why my bike runs rough and i have kids.

  12. #27
    Join Date
    19th November 2015 - 16:55
    Bike
    Aprilia RS125
    Location
    Auckland
    Posts
    88
    Quote Originally Posted by OddDuck View Post
    You'd said earlier that it was sparking OK - is it still sparking?

    If you're getting petrol leaking from the carb bowls - surely the bike is getting gas? Try cranking it and then if no start, pull the plugs. If they're wet with petrol then that isn't the problem.
    Admittedly I didn't pull the plugs... should probably try that LOL
    but yea, they are still sparking. If the plugs are wet then what do you think could be causing it? faulty spark?

    Quote Originally Posted by Drew View Post
    Does the bike only have three sets of exhaust valves? They don't have to be identical at all. Each one just needs to be within spec.
    Apologies! I must've forgotten to add the additional one.
    two were out of spec, so threw some new ones in to rectify that.

  13. #28
    Join Date
    24th June 2004 - 17:27
    Bike
    So old you won't care
    Location
    Kapiti
    Posts
    7,880
    One thing that will kill a motobatt battery real fast is over charging. They don't tolerate a high charge rate like a good lead acid will.

    Keep at it - you will get there... maybe ;-)

  14. #29
    Join Date
    28th January 2015 - 16:17
    Bike
    2000 Ducati ST2
    Location
    Lower Hutt
    Posts
    1,273
    Quote Originally Posted by STEPHASAUR View Post
    Admittedly I didn't pull the plugs... should probably try that LOL
    but yea, they are still sparking. If the plugs are wet then what do you think could be causing it? faulty spark?
    No, just a basic check to make sure that fuel is making it to the cylinders. I know you'd said there was fuel coming from the carb bowls due to bad gaskets, that means fuel should be making it up through the jets to the cylinders, but assume nothing.

    At this point it's getting puzzling to say the least... hang on. Cold garage? Old fuel? That's a classic with older bikes, there might actually be nothing wrong any more. Unleaded does go off, if you haven't already or recently, try completely draining the tank, chucking in a couple of litres of fresh stuff, and see how you go.

  15. #30
    Join Date
    19th November 2015 - 16:55
    Bike
    Aprilia RS125
    Location
    Auckland
    Posts
    88
    Quote Originally Posted by OddDuck View Post
    At this point it's getting puzzling to say the least... hang on. Cold garage? Old fuel? That's a classic with older bikes, there might actually be nothing wrong any more. Unleaded does go off, if you haven't already or recently, try completely draining the tank, chucking in a couple of litres of fresh stuff, and see how you go.
    Bike is currently stored in a workshop, gets rolled outside each day then rolled back in after shop closes up. Fuel was new, had completely drained the system before putting the new stuff in (mobil 98)
    I think my bike just hates me... LOL

    Quote Originally Posted by Paul in NZ View Post
    Keep at it - you will get there... maybe ;-)
    hopefully! >.<

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •