grounding during compression testing

[cbourbeau32]

Would clamping a jumper cable to the spark plug and then clamping the other end to an engine bolt be an effective way to ground the coil during compression testing?

Thanks, Charlie

 

[racerone]

Re: grounding during compression testing

No need to worry about grounding ignition on a 66 motor.

 

[cbourbeau32]

Re: grounding during compression testing

Ha! Racer, you knew what I was talking about. Thanks!

 

[racerone]

Re: grounding during compression testing

I have repaired these motors for many years.--Never had to worry about grounding the plugs.---Never saw a warning in factory manuals to do so either.

 

[Chris1956]

Re: grounding during compression testing

You can also jumper the starter solenoid, with the ign off. That works on all models.