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Discussion Starter · #1 ·
ok so i tried the home made manometer to synch the carbs realized the 3rd cylinder wasnt working, i thought it was the coil then i realized it cant be cause if it were niether the 3rd or 4th would be working so now the question is this, what could either keep the plug from firing (even though i replaced the wire and got a new plug) or the cylinder itself is shot, what could that be? how do i test if a cylinder is good and what could keep it from firing? could it be stuck?
 

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ok so i tried the home made manometer to synch the carbs realized the 3rd cylinder wasnt working, i thought it was the coil then i realized it cant be cause if it were niether the 3rd or 4th would be working so now the question is this, what could either keep the plug from firing (even though i replaced the wire and got a new plug) or the cylinder itself is shot, what could that be? how do i test if a cylinder is good and what could keep it from firing? could it be stuck?
The #2 and #3 plug wires come from the same coil. Swap them. If the dead cylinder becomes #2 then you know it's in the plug wire. If it doesn't move then swap the spark plug.
 

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thats the thing though man, the plugs are new
Lay a plug on the valve cover or the frame so it can ground properly and plug in the offending plug wire and crank it over to see if it sparks.
 
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