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more 150 problems
#1
After driving the f150 for an hour or so I parked in the driveway, came out an hour later and it won't start. Cranks easily and occasionaly fire for a second but won't run. It will run on ether. Fuel pump can b heard priming. And pressure runs around 35 psi at the rail and goes up slightly when attempting to start. I'm at a loss what to try next. Suggestions?
-2007 4.0 mustang



-1993 F150 302



-1966 mustang 302
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#2
Have you checked for spark intensity? Will the spark from the ignition coil jump a 1.5" gap?

Next step would be if the injectors are pulsing.

So many things, hard to give suggestions.
ASE Master Tech with 15 years experience


Daily Driver: 1994 GMC Sonoma, Extended Cab, 2WD, with the 4.3 V6 Vortec.
Future plans/projects: Finishing that darn 64 Malibu SS
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#3
Just an update for anyone interested. Turned out to be a bad MAP sensor.
-2007 4.0 mustang



-1993 F150 302



-1966 mustang 302
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#4
Check the spark plugs. I am sure the problem is with the spark plugs.
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