Carb or Dist prob??? please help..
Thread Starter
Race Director
Joined: Apr 2007
Posts: 14,062
Likes: 602
From: Henderson Nv-Rohnert Park/Sonoma C o. ca/born in NY Rockaway Beach.
Carb or Dist prob??? please help..
I have a 77 350 l48 stock. with a Qjet. new plugs and wires,fuel filter.
I seem to still have a stumble or hickup.. When i hit it ,its like the car is getting either 1.no gas and almost dies, and i have to feather it to get speed. 2. getting too much gas and flooding?? 3. maybe my timming is off just a hair 4. or maybe the carb needs to be rebuilt......
Other than that the car runs great real strong.
Any ideas?? Was thinking i just need to have carn rebuilt by lars.
TIA George
I seem to still have a stumble or hickup.. When i hit it ,its like the car is getting either 1.no gas and almost dies, and i have to feather it to get speed. 2. getting too much gas and flooding?? 3. maybe my timming is off just a hair 4. or maybe the carb needs to be rebuilt......
Other than that the car runs great real strong.
Any ideas?? Was thinking i just need to have carn rebuilt by lars.
TIA George
Drifting
Joined: May 2005
Posts: 1,909
Likes: 6
From: Lake Arrowhead - Georgia > 72 Base Coupe & 74 BB Roadster
These guys "wrote the book" on timing. Well worth reading.
http://forums.corvetteforum.com/show....php?t=1430339
And yes....a carb re-built by Lars is money well spent. I have two !
Good luck...
http://forums.corvetteforum.com/show....php?t=1430339
And yes....a carb re-built by Lars is money well spent. I have two !
Good luck...
Tech Contributor
Joined: Aug 1999
Posts: 14,380
Likes: 6,391
From: At my Bar drinking and wrenching in Lafayette Colorado
"90% of all carb problems are ignition problems."
Before doing anything with the carb, make sure your timing is correctly set up with 36 degrees total timing, a correct vacuum advance control unit, and adequate intial timing with functional centrifugal advance. Once verified, if you still have a stumble, you either have a bad accel pump, a lean condition (multiple possible causes), or a loose secondary airvalve spring windup.
Before doing anything with the carb, make sure your timing is correctly set up with 36 degrees total timing, a correct vacuum advance control unit, and adequate intial timing with functional centrifugal advance. Once verified, if you still have a stumble, you either have a bad accel pump, a lean condition (multiple possible causes), or a loose secondary airvalve spring windup.
Thread Starter
Race Director
Joined: Apr 2007
Posts: 14,062
Likes: 602
From: Henderson Nv-Rohnert Park/Sonoma C o. ca/born in NY Rockaway Beach.
Thank you Lars.... Im going to have someone help me with the timing.... I have no idea what im doing when it comes to that.But i will be watching for the next time. . And then ill go from there.
Will keep everyone up to date.
Thank you very much for the help..
Will keep everyone up to date.
Thank you very much for the help..
Thread Starter
Race Director
Joined: Apr 2007
Posts: 14,062
Likes: 602
From: Henderson Nv-Rohnert Park/Sonoma C o. ca/born in NY Rockaway Beach.
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