Quote:
Originally Posted by alexiskai
If the report of the idle dropping when the rear intake manifold is sprayed is accurate, that would be a pretty clear indication of a vacuum leak rather than a problem in the carb.
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That's my thought as well. At first I suspected the carb, but after swapping to a new carb and trying different float level adjustments I am 90% sure the carb is OK.
I have not put a straight edge on the block, but I thoroughly cleaned the gasket area and did not see any cracks.
I have one other piece of information I didn't mention earlier because I'm not 100% sure about it, but the engine seems to stall out more easily when it is really good and hot. The first few minutes of driving after a cold start are usually better.
How does this sound for an action plan:
1. Remove manifold and double check block for straightness and cracks
2. Order new intake manifold, gaskets, glands etc (can I install a new intake manifold with an old exhaust manifold or should both be new?)
3. Install new parts and adjust carb float to the book standard
4. If the problem persists bring it to the local Model A mechanic. I'd be out of ideas at this point.
Thanks!