1987 Ford F-150 wont rev over 1500

Tiny
73FORDGUY
  • MEMBER
  • 1987 FORD F-150
Engine Performance problem
1987 Ford F150 V8 Four Wheel Drive Manual

my friend has an 87 f150 w 5.0 new fuel pumps in tanks and new pump on fuel injection rail it will start and idle fine but when revved up to 1500 rpm it will die, you can then restart it and it will idle but back to 1500 and it will die any help will be great.
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Saturday, August 1st, 2009 AT 7:50 PM

2 Replies

Tiny
BLACKOP555
  • EXPERT
Check the fuel pressure when you get it up that high and see if the pressure drops. If it drops then the regulator or pump may be faulty. Has he checked the inline hihgh pressure pump.
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Sunday, August 2nd, 2009 AT 2:50 PM
Tiny
73FORDGUY
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The fuel pressure stays the same and the regulator has been changed and the high pressure pump is new. What I was wondering is if the injectors spray at different intervals and when the engine reaches 1500 rpm the injectors change?
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Sunday, August 2nd, 2009 AT 3:16 PM

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