1983 470 fresh rebuild having firing issue

T

tripbarb

Cadet
Joined
Jun 12, 2011
Messages
9
Please help i just completely overhauled my 1983 470. Yes i rebuilt it i like this engine. I am trying to fire it up before i winterize to make sure all is good. I am having trouble getting good fire. I have replaced points, condensor, coil, lead wire and the resistor is working however my fire is real weak and intermittent please help at witts end.
 
Don S

Don S

Honorary Moderator Emeritus
Joined
Aug 31, 2004
Messages
62,321
Re: 1983 470 fresh rebuild having firing issue

Check the voltage from the coil positive terminal to ground with a DVM and see what is shows with the key in the run position, engine off, and while cranking the engine.
 
S

stonyloam

Vice Admiral
Joined
Mar 13, 2009
Messages
5,830
Re: 1983 470 fresh rebuild having firing issue

The 470 gets its coil voltage from a set of points in the slave solenoid when the starter is turning, so you may have a problem with the points in the slave. Try jumping the coil + directly to the battery + when cranking it over. The voltage at coil + should read the same as the battery + when cranking. Good luck.
 
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