Carb, timing, acceleration issues
Thread Starter
Pro
Joined: Jan 2004
Posts: 522
Likes: 0
From: Grayslake IL
Carb, timing, acceleration issues
Okay. I think I have my carb leaned out pretty good. I am not eating gas as much as I was. I also think my timing is down and the car idles at 900 RPMs when warm. It still has a hesitation or bog if I floor it, esp. at higher speeds in 3rd or 4th gear. If I am in 1st or 2nd and floor it the tires get all greasy and the car really goes. Am I too lean or is the timing still off? I put a lower rated spring in (3-4 Hg) my power piston pump. The jets are stock for a 1974 L-82 4 speed as are the needles.
Any and all advice greatly appreciated.
Any and all advice greatly appreciated.
Le Mans Master
Joined: Jun 2003
Posts: 5,135
Likes: 71
From: Umeå Sweden
how does your plugs look?
cant you get an lower idle??
i have mine at 600rpm
before i had my carb restored with all new part i couldnt get the car too idle under 1000 rpms
What carb do you have?
sounds like you are a little lean on the secondary.
cant you get an lower idle??
i have mine at 600rpm
before i had my carb restored with all new part i couldnt get the car too idle under 1000 rpms
What carb do you have?
sounds like you are a little lean on the secondary.
Thread Starter
Pro
Joined: Jan 2004
Posts: 522
Likes: 0
From: Grayslake IL
Originally Posted by Boofers
Are you are saying you get a hesitaion when you go from cruise to WOT? If so maybe you have a vacuum advance problem.
Drifting
Joined: Nov 2002
Posts: 1,665
Likes: 1
From: Ontario
Originally Posted by thevetterisbetter
That's exactly what is happening. It doesn't happen so much in 1st and 2nd though. What kind of vacuum advance problem?
More great QJet info:
http://www.corvettefaq.com/c3/QJetTuningPaper.doc
If that isn't it then verify your timing, often times ignition problems and carb problems give the same symptoms.
https://www.corvetteforum.com/techti...=109&TopicID=3
https://www.corvetteforum.com/techti...=115&TopicID=3
Good Luck
