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Ggmac · 10-23-2023, 06:49 PM

This spark plug glow at the base is bugging me . If its still together, I have a simple test you could try . Take a jumper leade and attach to the base of the spark plug (while its in the cyl head and ready to run ) take that leade and attach the other end from the plug base to a solid ground on the motor . What I’m trying to do is eliminate the possibility of the plug NOT BEING GROUNDED when installed in the cyl head . Never had nor heard of this situation, but also never had a glow or spark from plug base to ctl head either .
Just a way to eliminate the potential of it being not grounded. If the cyl starts to fire , we’re on to something.

10-23-2023, 06:49 PM	#13
Ggmac Senior Member Join Date: Jul 2016 Location: Lake worth Florida Posts: 1,121	Re: 47 V8 ignition mystery This spark plug glow at the base is bugging me . If its still together, I have a simple test you could try . Take a jumper leade and attach to the base of the spark plug (while its in the cyl head and ready to run ) take that leade and attach the other end from the plug base to a solid ground on the motor . What I’m trying to do is eliminate the possibility of the plug NOT BEING GROUNDED when installed in the cyl head . Never had nor heard of this situation, but also never had a glow or spark from plug base to ctl head either . Just a way to eliminate the potential of it being not grounded. If the cyl starts to fire , we’re on to something.