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2003 Ford Truck 03 F-150 fuel injetor dumping fuel in cyl 3

Tiny
BILL49203
  • MEMBER
  • 2003 FORD TRUCK
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 200,000 MILES
I have a 03 f-150 with 4.2l v6 I put new coil pack plugs, wires. The injector was not working in cyl #3 I replaced it now its smoking like a train and fouling the plug out in that cylinder it stops when I take the plug off its definetly dumping fuel in that cyl what could cause this beside a faulty injector which is new but I will be switching in the morn with different cyl to see if it does the same thing.?
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Monday, June 8th, 2009 AT 8:52 PM

4 Replies

Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
Hi there,

check that you have injection pulse on the cylinder and if this is ok, you will have a faulty injector.

Mark (mhpautos)
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Monday, June 8th, 2009 AT 8:54 PM
Tiny
BILL49203
  • MEMBER
  • 15 POSTS
Its a new injector and I definetly have noid I cvouldnt hear the old one with my stethoscope and I can here this one have you ever had a brand new injector stuck open?
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Monday, June 8th, 2009 AT 9:00 PM
Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
Hi there,

Yes, more than once,

mark (mhpautos)
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Monday, June 8th, 2009 AT 9:05 PM
Tiny
BILL49203
  • MEMBER
  • 15 POSTS
Ok im going 2 switch the injector 2 a differt cyl just be sure in the morn I let you know the outcome Thank you. Bill
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Monday, June 8th, 2009 AT 9:25 PM

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