H1 missfire

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Re: H1 missfire

Postby SAM » Sun Aug 12, 2018 8:31 pm

So does miss fire move with carb change?
THREES MORE FUN
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Re: H1 missfire

Postby Ogri211 » Thu Aug 16, 2018 4:20 pm

It would be hard to tell cause it only does it flat out so its hard to tell what cylinder is missing.
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Re: H1 missfire

Postby Tartan Triple » Thu Aug 16, 2018 5:37 pm

you should be able to tell which cylinder as when it kicks back in, it will smoke a bit more, I am going with carb issue Thumbs Up
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Re: H1 missfire

Postby Ogri211 » Thu Aug 16, 2018 8:10 pm

i will get my pal to sit behind and check it out.
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Re: H1 missfire

Postby Ogri211 » Sun Aug 19, 2018 8:28 am

Thinking about what you are saying Tartan, the first year I had the bike it went OK, but when I rebuilt it I had constant problems with leaks from the float chambers, so I replaced the needle valves with viton ones, im thinking the symptoms I have could be caused by petrol starvation and this could be related to float heights, I set them up using takeaway container with the carb with the float bowl removed on stilts, any carb advice would be helpful as I have exhausted the electrical side by checking and replacing just about everything.
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Re: H1 missfire

Postby Tartan Triple » Sun Aug 19, 2018 10:51 am

I have always just turned the carb upside down and with a steel rule, set the floats to 22-24mm
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Re: H1 missfire

Postby Ogri211 » Sun Aug 19, 2018 6:42 pm

I took them apart again today if I set the floats below about 27 mm fuel just pisses out I have checked and the floats aren't punctured but if I try and set them to spec the fuel level is too high I changed the float needles to viton ones a couple of years ago as I had constant problems with leaking fuel. I have also checked the overflow pipes and they are fine so something is not right.
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Re: H1 missfire

Postby Tartan Triple » Sun Aug 19, 2018 6:57 pm

Ogri211 wrote:I took them apart again today if I set the floats below about 27 mm fuel just pisses out I have checked and the floats aren't punctured but if I try and set them to spec the fuel level is too high I changed the float needles to viton ones a couple of years ago as I had constant problems with leaking fuel. I have also checked the overflow pipes and they are fine so something is not right.
needle valves then, get original from motocarb and set the floats to the right height and should be fine Thumbs Up
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