carb hesitates when accelerating
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carb hesitates when accelerating
I just recently put a nery intake(performer) and carb (carter competition series)on my 87 302 roller engine wich is in a 76 f-100. I seem to have a problem when putting the accelerator to the floor hard, it wants to hesitate...when I accelerate slowly it goes fine..I'm not shure if the carb is to big for the engine or what.. I'm not even shure what the cfm is on a carter comp. series. I almost positive I don't have any vaccum leaks.
Thanks Tattoo Matt
Thanks Tattoo Matt
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Is your timing and more importantly the throttle set up correctly, as in, the left port draws zero vacuum at idle. I had a similar problem and the carb was throwing my timing way off. You may wanna take one of the metering rods out ,as well, and get the number off it and find out were your fuel is set at, if you think someone has changed it from stock settings. later and good luck, your getting closer and closer to getting that thing figured out, haha
Last edited by jwtaylor; Dec 4, 2003 at 01:44 PM.
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From: Still under the hood in O
Do you have adjustable vacuum advance?
If not, get one. Crane makes one that bolts on your stock ignition.
Sounds like your advancing too much.
I had the exact same thing with the Ch3v 4x4 when I went to an EPS manifold and Holley 3310.
It revved in park great and would get up to speed great if I didn't give it too much gas (Ie slowly).
It did not ping but acted like a miss fire. The simple fix was adjusting the vacuum advance down about 7 deg (roughly 3.5 turns).
If not, get one. Crane makes one that bolts on your stock ignition.
Sounds like your advancing too much.
I had the exact same thing with the Ch3v 4x4 when I went to an EPS manifold and Holley 3310.
It revved in park great and would get up to speed great if I didn't give it too much gas (Ie slowly).
It did not ping but acted like a miss fire. The simple fix was adjusting the vacuum advance down about 7 deg (roughly 3.5 turns).
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thanks for the advice...J.w. ...I didn't mention that I had a buddy tune that carb..that included getting all the vaccuum leaks out..getting the air/fuel dialed in..setting the cold idle..and re-timing..set at 11 degrees..so everything is running good..Iguess the little stutter just bothers me...My friend said it could be a leak in the distributor diafram..or could be that the accelerator pump is not as strong as it should be... well I guess it's a process of ellimination...thanks again guys
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I would put a vacuum gauge on the left port (the one going to the distributor) just to be sure there is no vacuum at idle, from the carb. I tuned the snot outta my motor it ran great, except the slight bogg as you mention. Come to find out the throttle was open just enough to draw vacuum at idle and it threw my timing off. Something easy to check should you want too. Glad to hear it is running better. Good luck in the future, Later
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From: iowa
it seems to edelbrock and carters are a pain. I had a problem with my 1406 and i did get th crane adjustable vaccum kit. I had problems with hestitation, cutting out, and pinging. I heard heard a lot of these kinds of complaints with the edelbrock/carter.
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