I have a serious potential buyer for my 03 Evo and who understandably would like a compression test. I have a compression gauge and have done a compression check before on a Mustang, so I understand the basic procedure.

What is the best way to disable fuel and spark on the Evo to do this test? I'd prefer not to have sparks arcing across the engine bay or injectors flooding out the motor.

Is there an injector fuse that I can just pull for the fuel?

On the spark, I'm less sure of what to do since the last car had a traditional coil wire that I could pull. The coil-on-plug set-up is a little puzzling.

Please advise.

Thanks.

 

Engine room fuse box. pull both engine fuses out. kills the power going to the ecu w/c disables the pump and ignition, but allows the starter to crank.

if you unplug the coil packs ( w/c youll need to anyways when comp. checking an evo ) will also disable spark.

 

this is a good describtion on how to do it

http://www.evomoto.com/tech_info.php?techID=8

 

You might throw a CEL this way ^^