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does anyone have an answer to mt problem of fast, eratic

Sent to Car Experts December 04, 2005 6:35 a.m.

does anyone have an answer to mt problem of fast, eratic idle during and after nwarm up. also, after warm up, engine stalls when put into gear

Optional Information:
Pre-1980 Ford tbird 390 cu in

Already Tried:
carb rebuild, found 2 vacuum leaks

Customer (name blocked for privacy)

Status: Closed Value: $10

Answer
December 04, 2005 7:02 a.m. (27 minutes and 5 seconds later)

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Davo -- Master technician -- 100% Positive Feedback on 1872 Car Accepts
ASE Master Technician/Advanced Automotive Diagnostic Technician

Reply
Sent December 04, 2005 8:47 a.m. (1 hour and 45 minutes later)

this engine races so eraticly, especially when cold but even after arm up and at that time, it wants to stall, difficult to keep running, it misses

Customer (name blocked for privacy)

Answer
December 04, 2005 8:52 a.m. (5 minutes and 6 seconds later)

ACCEPTED

If the carb is unbalanced as I described that will be the result.The carb feeds the cylinders in the following way.The right side of the carb feeds the two center cylinders on the left side and the two end cylinders on the right side.The left side of the carb feeds the two center cylinders on the right side and the two end cylinders on the left side.This is done to get as even of a fuel/air mixture as possible on a carbed engine.So if one side of the carb is too lean or too rich you have 4 bad running cylinders.That's why you need to check for an inbalanced carb as I described.

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Davo -- Master technician -- 100% Positive Feedback on 1872 Car Accepts
ASE Master Technician/Advanced Automotive Diagnostic Technician

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