hey all, I did a compression test other day and got 175 in all 4 cylinders. I didn't realize, didn't have fsm yet, do now, that the engine was supposed to be warm and to pull the efi fuse. Will this throw my numbers way off? Gonna redo it tomorrow when I get home. Also picking up leak down tester. also doing it by myself so should I hold the gas pedal down on the efi?

 

Warm engine might increase the numbers just a little and not disabling the EFI might also a little bit.

Yes you want to wedge the throttle open so the TB/Butterfly is open to allow maximum air thru.

I doubt you'll see very much difference redoing the test and since your numbers are even I'd be fine driving it as is until next tune up/service.