Larry, You sound like you are saying check and verify timing....? thanks Dee
On Sun, May 28, 2023 at 8:38 PM Mark Langford <m...@n56ml.com> wrote: > David Dee wrote: > > Still have not got my HAPI engine with a POSA throttle body and Slick 4216 > magneto started..... > > ............... > > Try this. Disconnect the fuel line and plug it. You don't want fuel > anywhere nearby when doing this. > > Remove the valve covers. > > Figure out for sure which cylinders are firing when by installing the plug > wires on the plugs....with the plugs removed from the engine, with spark > plug grounded (either pushed into contact with some grounded part of the > engine (case or heads), or better yet a jumper wire with large alligator > clips to connect the plug's threads to a ground. > > Turn on the ignition and slowly rotate the crank by hand (in the proper > direction) until a plug fires, then check to make sure that both intake and > exhaust valves on the corresponding cylinder are closed (some clearance > between rocker and valve stem). > > If this works, make sure that when the plug fires for a cylinder, it's the > compression stroke and not the exhaust stroke (back up after the spark to > Top Dead Cylinder, and use your finger to determine if there's compression). > > This is pretty basic stuff, but is a good start to make sure that the > basics are there....spark and compression. Fuel is another matter, > especially since you are talking POSa. > > Mark Langford > > ML@N56ML.comhttp://www.n56ml.com > Huntsville, AL > > > -- > KRnet mailing list > KRnet@list.krnet.org > https://list.krnet.org/mailman/listinfo/krnet >
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