Posted by Steve@Advance on June 01, 2021 at 17:31:56 from (99.190.215.237):
In Reply to: LOUSY 8N posted by Vinegar Ben on June 01, 2021 at 12:45:57:
Check the spark at the plugs again. Sometimes after washing one, water will condense under the cap, may be a day or 2 later, so recheck just to say you did. Did you have the distributor out? A front mount will only go on one way. A side distributor can go many ways and may be 180* out if you only went by the timing mark.
To check for fuel delivery to the carb, with the fuel on, engine off, remove the drain plug from the bottom of the carb bowl. It should have a steady flow, not slow to a drip or stop.
An easy test of the engine and fuel system, disable the ignition, remove the air filter hose, hold your hand tightly over the air inlet of the carb, have an assistant crank the engine over. You should get a strong steady vacuum and your hand wet with gas.
No vacuum means stuck valves, vacuum with no fuel means either no fuel in the carb bowl, or the main jet is clogged. or the adjustment screw is turned all the way in. It is possible for the tip of the main jet needle to break off in the jet if tightened too tight.
If all checks out, and the engine has not been run in a while, it may have dry rings. A small amount of engine oil in each cylinder will help seal the rings, boost compression, may be just enough to get an initial start.
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