bluesbiker In: Birmingham in th
Posts: 2510
Karma:
has anyone checked the float bowl? i had a flake of dirt in one of my bikes once fine until running on main jets then dirt sucked up and blocked main jet. throttle off, dirt drops away and runs fine.
They've had the (admittedly old) carb off and stripped several times Blues. I helped on one occasion and it was absolutely spotless.
I agree though Blues, my first thought was that perhaps one of the jets was partially blocked. However, give it more air (remove the air filter and box) and it's off like a scalded cat, which suggests over-fuelling.
It's very odd. I feel for HFG, I really do.
Sorry my suggestions have not help. Looks like Nitro and friends are covering all the bases. Weird...as it has been said, there is not much more to check. I would check the carb too, as it could have been 'set-up'or modified for some reason, the good old Haynes manual will have the right jet sizes.
Hi Sean - yeah looks like the carb needs to come off again!!
& LC - yep - I've tried talking to her, yelling at her, bribing her but she still aint for playing!!
I doubt both carbs will have the same problem. Have you checked the fuel supply to the carb? It could be fuel tap blocked, or if it is a vacuum tap could be a split vacuum pipe. Just two things that havn't been mentioned yet.
Dunno what happened to the post I put Stella
But I did say the only thing left was for you to get Mavis a boyfirend !!
Bless her she is all frustrated & taking it out on you
Hi Tim - yep we've checked fuel supply which seems good...inlet manifold...errr......DAVE???? have we checked that?
Shell - I want a boyfriend before she gets one!! - mind you if it means that she'll start running ok so's I can get out ...........how about it I ger her a comfort blanket instead??....
So if the bike runs like a gud un with the air filter off etc then yr problem must be with fuel rather than electrics ... anyone checked the mixture screw on the carb? i.e. is it working properly
*runs away quick just in case they have*
Yes Stella .. the inlet manifold rubber was checked with carb cleaner and WD40 for leaks .. None at all .. I do think it`s running lean .. Anyone near to check the main jet ?
I still can't imagine both carbs have same jetting problem. So I would assume jets are OK. Try checking compression with a guage. If air is getting in, via leaky head gasket for example, that would lean mixture off.
Eventually fixed my problem by taking it to a fixer with rolling road and DYNAjet tunig equipment and found a faulty coil.
While I was tinkering myself I had lots of advice from people, much of which has been mentioned here, but one thing I havent seen mentioned yet is the Diaphragm. Even the slightest pinhole would give symptoms you are getting. As you've changed carb and tap this should be fine, but worth a check.
![Let's Get HFG's Bike Sorted! (2) - Forums [Biker Match]](/images/backgrounds/strips/8mobileLQ.jpg)
![Let's Get HFG's Bike Sorted! (2) - Forums [Biker Match]](/images/backgrounds/strips/8desktopLQ.jpg)
