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Re: 440 6 vacum leak at the carbs
[Re: moparmatt0]
#1188980
03/01/12 09:30 AM
03/01/12 09:30 AM
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Joined: Nov 2005
Posts: 836
lancaster, new york
macmic87
super stock
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super stock
Joined: Nov 2005
Posts: 836
lancaster, new york
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Quote:
440-6 cant get the car to idle the moves from 1400 to 1600 when you try to lower it the engine stalls out.
another possibility is to make sure the end carbs are closed all the way and that the end carbs are adjusted for a proper idle mixture.
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Re: 440 6 vacum leak at the carbs
[Re: moparmatt0]
#1188987
03/01/12 02:56 PM
03/01/12 02:56 PM
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Joined: Jan 2003
Posts: 24,562
Brookeville, Md
Mr.Yuck
Not enough dumb comments...yet
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Not enough dumb comments...yet
Joined: Jan 2003
Posts: 24,562
Brookeville, Md
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Quote:
The engine is just rebuilt with 440 source heads and a 500 inch stroker kit it has a cast iron intake that does not seem to leak but with a smoke test there was smoke coming out of the base plates and throttle shaft
are they old carbs? Maybe they've been "cranked on" too many times. Try and re-snug them but not too much. And if your shaft is leaking I'm guessing that carb will need to come off. Unhook the outboards, start the car run the idle up to 1200, then back it down slowly say 1000 and adjust for best vaccuum. What is your initial and total advance? I'd think 36* total at 2200rpm and 18* initial would be a good place to start.
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Re: 440 6 vacum leak at the carbs
[Re: moparmatt0]
#1188990
03/01/12 09:48 PM
03/01/12 09:48 PM
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Joined: Jun 2008
Posts: 3,916
usa
lewtot184
master
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master
Joined: Jun 2008
Posts: 3,916
usa
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Quote:
We had the base plates resurface at the machine shop and now the idle is better at 1100 but every now and then it climbs up a little and goes back down the timing is locked at 38 degrees
sounds like a lean idle condition. also make sure the throttle shafts in the end carbs are working freely. i've had them bind up a little after the carb was tightened down. why a locked in advance?
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