308 carb problem, idle and deceleration

bernardo66 · May 2, 2007

docweed said: ↑

Bernie
I mentioned in an earlier post that there were two types of fuel mixture screws, the short stubby ones which work best around with 2 1/2 - 3 turns out and the longer thin tapper which requires 4 1/2 - 5 turns out so it sounds like your in the ballpark (with long tapper). I would think that if your car idles at 800 rpm's, purrs, and leaps and growls then I'd be happy and leave will enough alone. BTW I said that mine had the long taper and that it was a US car, well I forgot that it is in fact a Canadian car. Also someone said the Euro cars had the long taper so maybe the Canadian cars do also and yours has the long tapper screws. If so 5 turns is OK. Does you car have a speedometer in km/h or miles/h? Mine is in km's.
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It's a US spec car with kms on the speedo. We'll be finishing off my car this Saturday, so I'll let you know what screws he played with.

Artvonne said: ↑

What happened to the cylinder with zero compression?
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We haven't tackled that problem yet. While the car was idling, we disconnected the plug wire on that cylinder, and nothing happened; unlike when we would disconnect another one, and there was a slight difference in the idle. What surprises us is that the car doesn't seem to stumble or act erratically with that one bad cylynder.

Beta Scorpion said: ↑

Just another thing to check when tracking down a fast idle. Air leaks from under the carbs can raise the idle speed. There are some threads about testing for this.

When I was 'poking around' looking for vacuum leads, I just happend to put a wrench on on of the carb hold down nuts and it was loose. I checked a few more and they were not a tight as I had originally had them when I rebuilt the carbs. Re-torque of all the nuts solved my fast idle problem.
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Thanks for the tip. We'll look out for that this weekend.

More to follow.....

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308 carb problem, idle and deceleration

bernardo66 The Crazy Cat Man
Lifetime Rossa Owner

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308 carb problem, idle and deceleration

bernardo66 The Crazy Cat Man Lifetime Rossa Owner

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bernardo66 The Crazy Cat Man
Lifetime Rossa Owner