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Originally Posted by etbill52
My questions are: Do I need to check it with motor cold, or warn up, engine running of off, And what PSI should it read. I sure do dread replacing a fuel pump  Thanks for any help on this....Bill |
Yes. Check cold engine off with ignition on. Check with engine running. Check what is does when you turn the engine off (it will drop a little but should hold pressure).
You need 60 - 65 for starting. Running should be around 60 or higher.
//2000CAYukon