If you are running a dellorto 15.15 on your stock Moby tell me where your idle screw is set. Just wondering....no matter how i jet it, rich or lean, air box/filter or not, it seems to only idle good with the screw all the way in, back it out just a little and it dies. Is this normal? When it is ideling it's nice and low, couldn't be any smoother, twist and it goes...
any feed back is welcome
thanks yalls
that shouldnt be normal. you must have a leak
I'd leave it if it's working, shit, they make it screw in all the way, so you can screw it in all the way
yeah deffinitly you can run it, this describes my puch perfectly.
I had a 16.16 on my ported moby and I think that the carb is slightly too big to get the carb to idle. I checked for leaks several times and all I could do was keep the throttle slightly on, I was running a doppler pipe though which has terible lowend. Double check for leaks and if there aren't any you are fine.
I have been checking and rechecking for leaks. I may tear the whole damn thing apart and start all the way over again. It just didn't seem right to me to have to have it screwed all the way in. You'd think if i had a leak it would idle way high and I'd have to back the screw out to bring the idle down...if that makes any sense, I'll fuck around with it again tomorrow. The fucker runs, and runs awesome, just wondering what other 15.15 users on stock were doing
i run the 15/15 with the idle screw about half way, bout where it came stock.
if you had a leak, you would have to raise the idle to compensate for the escaping gases
its fine
you sure?
Last night I re-installed my 15.15 on my Moby after I had robbed it for my Pinto...
I have the curvy intake...
Before, it idled perfect with the back tire barely moving at all when on the stand. I think I was two full turns out...
Now, it idles way fast. No matter how far I turn out the screw it idles too fast.
i'm thinking air leak, as it's a bitch to screw the carb on tight because the cylinder is in the way and I can't hardly get a screwdriver on it to clamp it down tight.
After screwing with it for an hour, I got it to slow down, but I'm like four or five turns out...
I think the shorty intake would help me here so I could actually get to the screw to tighten the carb down on the intake...
I rode it for a mile or two and it ran perfect. So right now I'm gonna go with it for a bit...
try bending an old crappy screwdriver to a 90 degree angle? Then it will be your special carb-putting-on screwdriver.
I keep some adhesive putty that is used for hanging pictures in my bag to pack around suspect leaks as a temp fix or troubleshoot, or modeling clay, try that
A shorty intake would make the carb easier to install but on my 15.15 with a manual choke the shim is the wrong size so I had to make a new one anyways. Just put a tiny bit of motoseal or any other RTV that doesn't get eaten by gas on the intake and it should fix your problem. Also you can use an 8mm box wrench on the carb instead of a screwdriver, makes it way seaier to get it tight.
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