Compression test engine wont crank - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Heads-up · 04-26-2022, 12:37 PM

I am putting headers on my car. I had all the plugs out so I figured I'd test the compression, (only had the car for a thousand miles or so). The coils and plug wires are off, spark plugs are out, and airbox is off, o2 sensors are disconnected. The car wont crank. I get open hood warning, stabilitrack warning, and low fuel level (tank is full). I pulled the left and right injector fuzes. When it wouldnt crank, i put them back in.

Anyone know the correct procedure for this? Do the coils etc have to be plugged in before the car will crank? Did I make a mistake pulling the injector fuze?

LevonH · 04-26-2022, 03:02 PM

Try holding the gas pedal to the floor.

Heads-up · 04-27-2022, 10:44 PM

That solved my problem. Thanks

John Simon · 08-16-2022, 03:31 AM

If you have an Automatic Transmission car then you should try to keep the throttle wide open. and if you have a Manual Transmission Car then you should press both, Gas paddle and Clutch to the floor and then crank. This shows the car that you don't want the car to be started but just to prime/crank the engine for oil flow or compression test or whatever reason.

04-26-2022, 12:37 PM	#1
Heads-up Drives: 2010 2SS Join Date: Sep 2021 Location: Bozeman Montana Posts: 38	Compression test engine wont crank I am putting headers on my car. I had all the plugs out so I figured I'd test the compression, (only had the car for a thousand miles or so). The coils and plug wires are off, spark plugs are out, and airbox is off, o2 sensors are disconnected. The car wont crank. I get open hood warning, stabilitrack warning, and low fuel level (tank is full). I pulled the left and right injector fuzes. When it wouldnt crank, i put them back in. Anyone know the correct procedure for this? Do the coils etc have to be plugged in before the car will crank? Did I make a mistake pulling the injector fuze?

04-26-2022, 03:02 PM	#2
LevonH Chevy Enthusiast. Drives: 2015 Camaro ZL1 Summit White Join Date: Jan 2019 Location: Calgary Area, Alberta Posts: 221	Try holding the gas pedal to the floor. __________________ Levon H. Bone Stock

04-27-2022, 10:44 PM	#3
Heads-up Drives: 2010 2SS Join Date: Sep 2021 Location: Bozeman Montana Posts: 38	That solved my problem. Thanks

08-16-2022, 03:31 AM	#4
John Simon Drives: Supra, GTR R-34, RX-7 Join Date: Aug 2022 Location: Calgary, Alberta, Canada Posts: 33	If you have an Automatic Transmission car then you should try to keep the throttle wide open. and if you have a Manual Transmission Car then you should press both, Gas paddle and Clutch to the floor and then crank. This shows the car that you don't want the car to be started but just to prime/crank the engine for oil flow or compression test or whatever reason.