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Preparing to test compression on my 175 HP V6.
1. Should I use the muffs while spinning engine for test?
2. What is the best way to disable engine from trying to crank while testing?
If you have a starter solenoid, you need to run a jumper wire from a 12V source to the positive side of the coil for the solenoid. That will crank the engine without needing the ignition.
