| :I suspect that I have an intake manifold leak.What tests can I do to verify an intake leak?
*Squirt some light oil around the intake manifold ports with the engine running, if the engine speed changes you gotta leaker.
Do the one piece steel/asbestos gaskets seal better than the cheaper 2 piece asbestos gaskets?How about the original copper kind?Any special instructions when installing the new gasket?
*Any of the gaskets will work adequately if the intake manifold/exhaust manifold are flat across the mating surface. It is getting increasingly difficult to find machine shops set up to plane the A manifold. I use a "great 'ol big" file I inherited from my Grandfather and am able to get them pretty close.
Also, what reading should a vacuum gauge give when hooked up to the vacuum wiper port?
*In a word, erratic. The Model A engine being such that it is with relatively low compression, mating surfaces that often leave something to be desired and the engines tendancey to "drop a cylinder" occasionally when the whim strikes all tend to effect the vacuum guage. However a consistent tick in the guage can still indicate bad valve, manifold leak, timing etc. I'm embarrassed to say I cannot tell you the guage reading you should get because my guage is not numbered. God speed under 50. The Model A Fool.
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