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The trunck running good at idel but when I push the gaz pedal the truck dont take the gaz is running bad

Tiny
YVONPREVOST
  • MEMBER
  • 2001 FORD F-150
  • 257,000 MILES
I check the compressor engine it good 150 150 150 150 150 125 120 90
i change the gaz filter and spark plug. Right side left side
now I need your help.
Friday, October 28th, 2011 AT 5:12 PM

2 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
The compressionis way low on the last cylinder, you may have a bad valve. Check yoru fuel pressure also it may be loww.
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Friday, October 28th, 2011 AT 7:20 PM
Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
What makes you think that is good? You have a nearly dead cylinder @ 90PSI.
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Friday, October 28th, 2011 AT 7:35 PM

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