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1992 Ford F-150

Tiny
KB57
  • MEMBER
  • 1992 FORD F-150
Engine Mechanical problem
1992 Ford F150 V8 Four Wheel Drive 100000 miles

Starts up, runs good, but when turned off it won't start back up for 3 to 4 hrs. Later. I have put a new gas filter on and, drained all old gas and replaced with new. Put in fuel injection cleaner. Gas filter builds up alot of pressure. Vaccum hose is dry. Has dual gas tanks. No matter which tank is used it will do the same.
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Thursday, June 3rd, 2010 AT 11:52 AM

7 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,200 POSTS
WHen you shut it off, is the engine getting spark and can you hear the fuel pump engage for a second or two when you first turn the key on?
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Thursday, June 3rd, 2010 AT 12:55 PM
Tiny
KB57
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Yes engine is getting spark, and yes you can hear fuel pump engage
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Thursday, June 3rd, 2010 AT 1:17 PM
Tiny
JACOBANDNICKOLAS
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If you are getting both, then either there is a timing issue, compression issue. I want you to try something for me. See if the engine starts for a few seconds with starting fluid.

Joe
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Thursday, June 3rd, 2010 AT 1:41 PM
Tiny
KB57
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I will try that tomorrow. I need some starting fluid. I will get back with you then. Thank-You.
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Thursday, June 3rd, 2010 AT 3:55 PM
Tiny
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Let me know because if it starts with starting fluid, then we have a fuel related issue. If it doesn't, then it's ignition related.

Joe
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Thursday, June 3rd, 2010 AT 10:44 PM
Tiny
KB57
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It would not start. Any suggestions for my next step? Thank-you.
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Friday, June 4th, 2010 AT 7:58 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
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If it isn't at least backfiring with starting fluid, I need you to recheck the spark. Is it a hot blue snapping spark? If it is, then we have to check compression. Check the spark and here are the directions for checking compression.

http://www.2carpros.com/dia/how_to_check_compression.htm

If you have good spark, fuel pressure, and compression, it has to run unless the timing is bad.

Let me know what you find.
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Saturday, June 5th, 2010 AT 11:26 PM

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