Surging when accelerating
Le Mans Master
Joined: Mar 1999
Posts: 6,744
Likes: 1
From: delmont pa
Cruise-In I Veteran
Cruise-In II Veteran
Re: Surging when accelerating (bondo478)
you can convert to a electric choke but not the GM style and it sounds like you are going the right direction. keep us posted :chevy
Thread Starter
Racer
Joined: May 2001
Posts: 270
Likes: 66
From: Bath, NY USA
Re: Surging when accelerating (clem zahrobsky)
I put the #67's in today and it is a world of differnce!! It still does surge just a little bit but at least we are on the right track! Should I try one jet higher again?
Race Director
Joined: Jan 2003
Posts: 17,652
Likes: 3,662
From: Central Arkansas
Re: Surging when accelerating (Matt Gruber)
:iagree: Try Matt Gruber's test. Too much vacumm advance shows up in my car mostly at steady cruise but also light acceleration. It appears to be a common problem with today's fuels. :steering:
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Pro
Joined: Mar 2001
Posts: 587
Likes: 0
From: Leonard, MI USA
Re: Surging when accelerating (DansYellow66)
I had something similar like this happen two nights ago. I had noticed my car getting steadily worse and worse. Mine was more surging during cruising. Then, all of the sudden the car stopped running. I would crank and start, then die.
What caused it? The + wire going to the coil was loose. Actually, it kind of cracked out of the connector. Fix the connector, revs up to 5500 now no problem, and cruises nicely.
What caused it? The + wire going to the coil was loose. Actually, it kind of cracked out of the connector. Fix the connector, revs up to 5500 now no problem, and cruises nicely.
Thread Starter
Racer
Joined: May 2001
Posts: 270
Likes: 66
From: Bath, NY USA
Re: Surging when accelerating (Matt Gruber)
Sorry, hadn't gotten much of a chance lately to mess with it. Disconnecting the vac advance did help a bit but not very much. I've done larger jets which seemed to help but it's still not gone. Power valve?
