I have an 83 cutlass supreme 307y and my gas is running way to rich you can smell it bad didn't pass smog for this reason. Can anyone tell me exactly how to adjust my quadrajet fourbarrel I have a feeling after I do that it will calm that down anyone have any ideas what I can do other than that to fix the rich gas problem thank you!
Carburetor adjustment
- Thread starter Johnnyboy559
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That is an electronic Q-jet and cannot be adjusted. My guess is that the float is soaking up fuel, sinking, and causing the flooding. Change it out along with a good cleaning and you should be good. Where are you that still smogs an '83? In a pinch, pulling a hose and creating a vacuum leak may get you to pass.
I tend to go to the cannister valve in front of carb. Disconnect top carb vent hose and see if you have vacuum or fuel in it. GM fixed the floats long before 83 although it could have an aftermarket float.
How does car run?
How does car run?
Thanks for the advice yea something is going on with the carburator sometimes gas will spit out the top into my air filter area aswell. I thought my carb was a Manuel choke. I'm in California strict smog rules. Sucks.. wich hose do you think I can pull any vacuum one?
Canister valve? I would have to look that up. I've never messed with carbs before i would do this while engine is on right? And checking suction on vacuum line? What if it has gas? Car runs good pretty strong for 400,000 miles lol the motor does shake a bit mind. Mind you I just turned it on an started running it. It was sitting 3 years
What's a good replacement carburator for my olds 307y I feel like a should by a brand new qjet rather than a edlebrock or Holley any suggestions?
They can be adjusted. However, the adjustments have a very limited range and require the anti tampering plugs to be removed first. To adjust a E4ME Qjet you will need an analog dwell meter to tell you if it is rich or lean.
To the OP. First thing to do is hook up a dwell meter set to the 6 cylinder scale and see if the computer is responding rich or lean. A lean exhaust stinks much worse than rich and it can be hard to tell them apart. The CCC system is very sensitive to vacuum leaks which lean ouf the fuel mixture. There are about a 1,000 different places where vacuum leaks can form.
Not in Cal they can't. I have cured many a grumpy idle by richening them but as soon as a smog tech sees the open plugs game over. Same with the vacuum trick. A vacuum leak will disguise a rich condition but will cause other problems that won't fly in Cal. Here in NYC we vacuum leaked around emissions plenty of times. OP- forget that. Get it rebuilt by someone who really knows what they are doing. Not an off-the-shelf replacement. Get the ORIGINAL carb rebuilt and keep it on that car. It is the ONLY carb that belongs there. After 400K I think it deserves a break- eh?
The idle air bleed plug can only be seen if they take the air cleaner lid off, and that is the main adjustment for idle mixture. Generally adjustment is a last ditch move if nothing appears to be broken.
Agree about getting the original carb rebuilt.
First thing is we need to know if the OP's car is indeed running rich. It can be hard to tell a rich exhaust from a lean exhaust, making a misdiagnosis easy.
Agree about getting the original carb rebuilt.
First thing is we need to know if the OP's car is indeed running rich. It can be hard to tell a rich exhaust from a lean exhaust, making a misdiagnosis easy.
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