H1 Dies Off Of Choke

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lozza
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H1 Dies Off Of Choke

Post by lozza » Fri Jul 05, 2013 8:20 pm

Just picked up a H1 that has been stood for 2 years.

It will start on the choke, and then idles at 4000+ RPM but dies if it is taken off - it does run if i use the throttle but quickly dies if left to idle.

I've had the carbs out, cleaned and checked them thoroughly and they are in good condition. i didn't check the float heights but it ran before it was stood so i can't imagine they have changed?

I've also drained the tank and filled it with new fuel and put a new fuel filter in and have run it for long enough to make sure all the old fuel is out of the system.

Things i have noticed -
-the fuel filter only fills up a third but i can see fuel flowing through it.
-there is a gap of about 1 mm between the two halves of the airbox at either side.
-the revs pick up SUBSTANTIALLY if i partially cover the airbox intake both on and off the choke.

ive tried screwing the idle adjuster all the way in and out but still no luck.

ive tried to give as much info as possible here, any ideas??

lozza
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Re: H1 Dies Off Of Choke

Post by lozza » Sat Jul 06, 2013 2:39 pm

Had a look at the rubbers that sit against the carb mouth.

3 out of 4 of them have the ends a bit bent and folded over. could this cause the problem im experiencing?

Good one:
Image
Bent one:
Image


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