1994 F150, Automatic, 2wd, 5.0 Won't Start. Cranks fine, good spark, good cap, rotor ,wires. New plugs , new pcm with no codes. After cranking plugs remain pretty dry won't start with build, mechanical timing okay. Engine SAT for a long time since last started, good to low compression. Anyone have any suggestions? Proper voltage out of mass air flow sensor also., ?help

5

Asked by Sep 18, 2017 at 10:59 AM about the 1994 Ford F-150 XLT Extended Cab LB

Question type: Maintenance & Repair

Ruck cranks, pcm good, wires,cap,rotor, plugs, fuel pressure all good

6 Answers

5

Typo-won't start with starting fluid, have spark at plugs, good fuel pressure at the rail, mech timing about 8 btdc, pcm no codes, it acts like a timing issue but I don't know if that is possible since I am getting spark at the plugs. Also I think after cranking I should get slightly wet plugs but they stay pretty dry.

1,125

Check the compression, also make that the wires are set up in the correct firing order.

1 people found this helpful.
5

Did check the wires, correct according to the diagram on the truck, compression is good

1,125

If it's not starting with starting fluid. Then it's most likely the timing is off and you will, still have spark but If it's not in the right order then it won't start try setting it for 10 btdc

1 people found this helpful.
5

Thank you all, check firing order again good, compression about 100 all cylinders, still nothing.

5

Thank you, I have tried 10 btdc and 6btdc, at 6 with the throttle wide open (WOT) it tries to fire up but never quite gets there. I leaning toward a bad pickup in the distributor, somehow triggering but not at the right interval? Any thoughts?

Your Answer:

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