Quadrajet Problem Solving > Diagnose a Quadrajet carburetor problem
Another Idle question
Cliff Ruggles:
Bummer, what's killing the starters?
Cheap reman's or the big motor just taking to much to crank it thru when it's hot?
I will say that I went to a mini-starter about 20 years ago for my engine(s) and I could literally drive the car to town with it if the batter held up long enough!
It's been one of the best purchases I've ever made for my set-up.........Cliff
richie49:
The starters are just bad.I was starting the engine,trying to get some tune and checking what you had said to try. The starters would just moan and go to smoking. I did put a hitachi gear reduction on it and the starter cranks it just fine at 19 degrees of advance, BUT the dang thing rattles the flywheel .I shimed the darn head with two shims and you can see clearance between the flywheel and gear drive but it still makes noise.I dont think I can put more shims in it. So aggravated I feel like grinding the gear back some more and rebeveling the ends.. Might have to try one off a mid 90's lt1 ,I think the oem's have more clearance from flywheel..
Richard richie49
Cliff Ruggles:
Bummer. I had to shim mine a way away from the flywheel to get it to run quiet, been fine now for nearly 20 years......
richie49:
It seems I finally got the starter to behave.The engine starts fairly easy but still is rough.I checked the timing and its not rock steady but it doesn't move very much,just wiggles a little. I turned the idle screws and they dont seem to make much differance on the idle quality.Does rev up nicely. Do you think it needs more fuel? Pulled a vacumn hose off of carb and didn't seem to make a differance.
Richard richie49
Cliff Ruggles:
Take a look into the carb at idle speed and see if you have any nozzle-drip?
If so it's not completely on the idle system.
If you don't have any you should be able to turn the screws in and reduce engine speed or at least have some effect on the idle system as it goes lean.
Something else to try just to see how the engine can behave with that cam is to loosen up the distributor and turn it in both directions until it smoothes out or as smooth as possible. Then take a gander at where the timing is at. Also fine tune the mixture screws while at that setting to see if you can make it even better and have control from rich to lean.
If there is a point in the deal where you can get it to smooth out then there will be combinations of idle and fuel to achieve this with correct tuning......Cliff
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