Furry
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| posted on 10/10/09 at 11:26 AM |
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xflow carb favour
i am having ongoing problems with fueling on my westfield. i originally had zx6r carbs but these were causing it to run on three cylinders, so i put
the old carb on for sva. this got me through the sva but was overfueling meaning it wasn't drivable. the car is now road legal. and i have tried
putting the bike carbs back on but no matter what i (balancing, adjusting the floats, swapping diaphrams, compression test) do it continues to not
provide combustion (colour tune shows a spark but not combustion) on no 4 unless reved hard and even then its underfueling. so i was wondering if
anyone in the poole are had a crossflow carb or zx6r carbs i could borrow to make sure it is definately a carboration problem before spending more
money in this area.
i am getting desperate as have only managed 2 miles since being road legal (approximately 6 weeks )
[Edited on 10/10/09 by Furry]
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rusty nuts
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| posted on 10/10/09 at 11:42 AM |
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Have you tried testing for an air leak on the carb/manifold that isn't firing? Spray WD40 around any suspect area , if a leak is found the
engine speed will rise . Also is it possible to fit one of the other carbs to affected cylinder to eliminate carb?
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Furry
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| posted on 11/10/09 at 09:28 AM |
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i have tried the carb cleaner trick but it didn't work. unfortunately no able to swap carbs around.
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02GF74
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| posted on 11/10/09 at 10:56 AM |
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have you checked the jets are all clear and same in 4 as the others?
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norfolkluego
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| posted on 11/10/09 at 01:29 PM |
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Did I read that correctly
It's overfuelling on the old carb (DGAS or something?), on all cylinders or just one?
But underfuelling on one cylinder only on the bike carbs.
Agree with Rusty Nuts, sound like a problem with the bike carb inlet manifold or the carb itself (and the old one's just badly jetted for your
engine)
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RAYLEE29
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| posted on 11/10/09 at 07:52 PM |
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Hi, its James workmate
sorry your still having probs what sort of carb was the original one? was it a twin choke? or single have you tried rejetting to 1.3 gt? jets bring
the carb up to my work ill have a butchers if you like?
or if you like i could pop round yours and have a look at the car sometime anyway you know where to find me any eve except tues after 5 at the shop
Ray
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Furry
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| posted on 13/10/09 at 08:30 PM |
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at last success, one of the idle jets was blocked (thought i'd checked this but clearly not). cleared the jet and now runs on 4. goes well, but
fires back through the carbs on ocassions.
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