Re: Acceleration and bogging down

Ben Van Zoest /
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Since you didn't state the mileage and/or previous abuse, the engine is somehow losing crankcase vacuum or has piston/ring by-blow, do this for vacuum, remove flywheel cover, sparkplug and carburator, put a pencil in the plug hole turn the flywheel until you feel that the piston is all the way back, stop, put your thumb on the intake manifold and move the piston out, you should feel a steady vac pull till TDC. If not find the cause, seals, cylinder/head mating surfaces etc.

For compression the proceedure is the same but cover the sparkplug hole instead, at least this will verify proper compression and iliminate by-blow. Maybe someone can elabriate on this if you don't have a compression gauge.

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