Join Date: Aug 2013
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Yeah, that sounds like dielectric grease, test fuel pressure on the schrader valve, and clean the FPR screen also(plenty of write-ups in search). Since this truck hasnt ran in a while is the fuel fresh? Also, can you perform a buzz test with that scanner? If not, remove the valve covers and while you are cranking watch for HPO being exhausted from the injectors. Amounts should be equal, these test will confirm you are getting fuel and the PCM, IDM, and injectors are talking.
I just got an AE myself and am new to the computer/scanner world, but i believe that if you can check fuel pulse width it should be 1-6 ms in order to fire injectors and .45 ms while cranking and waiting for ICP to reach 500 psi, just something free to check on your PCM, someone tell me if im wrong.
Did you put all those new parts on after the issue started or before?
My truck died on the way to work, started back AFTER i had it towed, I put a BWD CPS in later that day and no start, old black Ford back in no start, new dark blue ford in and runs great. It threw an intermittant CPS code when it broke down the first time (most likely from excessive cranking/cussing) but not when I put the BWD in; and no CEL. Also, I had tach movement throughout this ordeal. The moral of this story is "anything short of a flat tire... change the CPS!" LOL
P.S. Fuel pressure should be 20 psi or greater cranking at the schrader, and it will be fluctuating somewhat due to the mech fuel pump. And i believe the delivery pressure that guy is speaking of is the suction from the tank, takes a gauge able to read in.Hg vac on the suction of the fuel pump to measure that.
96 F-250 XLT 7.3l Crew Cab 4X2 5-spd
Last edited by jfwatson; 09-09-2013 at 10:23 PM.
Reason: I forgot something!! Duh!