LLY: CP3 test

S Phinney

Active member
Aug 15, 2008
4,011
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28
Quncy, Fl
Yes there is. It will take EFI live and some high pressure fittings. you can eliminate all high pressure exits and see if the cp3 makes pressure via logging the data. I did it on my truck with a no start issue.
 

JoshH

Daggum farm truck
Staff member
Vendor/Sponsor
Feb 14, 2007
13,606
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Texas!!!
I'm sure there is a spec on how much fuel the CP3 should flow while cranking, but I have no idea what it is.