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Sparkplug and wire replacements

Tiny
MARKJ2016
  • MEMBER
  • 17 POSTS
Cylinder # 1 has coil over plug
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Monday, April 18th, 2016 AT 6:11 PM
Tiny
MARKJ2016
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  • 17 POSTS
#1 Cylinder has Coil over plug, leads to #4 cylinder
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Monday, April 18th, 2016 AT 6:12 PM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
They do have those inline spark testers that would be the easiest way.
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Monday, April 18th, 2016 AT 6:52 PM
Tiny
MARKJ2016
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Sorry, been a busy week at work. Will look for one of those this weekend.
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Friday, April 22nd, 2016 AT 5:40 AM
Tiny
SATURNTECH9
  • MECHANIC
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Alright keep me posted
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Friday, April 22nd, 2016 AT 9:01 PM
Tiny
MARKJ2016
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  • 17 POSTS
Ok, never did get around to getting a spark tester for the coil over plug on #1 Coil with P0301 misfire. I am still confused as to why the truck runs fine from cold start up to operating temperature and then once shut off for 5 min and starting back up, rough idle and P0301 code produced.
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Sunday, May 1st, 2016 AT 3:32 PM
Tiny
MARKJ2016
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  • 17 POSTS
With truck idling smooth and at operating temperature, I removed the electric connector to #1 fuel injector and the engine immediately started idling rough, put it back on and smoothed out. When engine is running rough, pulling the electrical connection to #1 injector has NO bearing on engine. I think something is up with #1 fuel injector.
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Sunday, May 1st, 2016 AT 4:07 PM
Tiny
SATURNTECH9
  • MECHANIC
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Of course it won't number 1 isn't firing you do the same test by unplugging the coil. Swap the number one coil with another cylinder and see if the missfire follows.
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Sunday, May 1st, 2016 AT 6:15 PM
Tiny
MARKJ2016
  • MEMBER
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Thanks for your help Saturntech9. I pretty much narrowed it down to fuel injector #1 and thus took it to Firestone. They confirmed it was #1 fuel injector by replacing it and the fuel filter. Truck is running 100% again.
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Sunday, May 15th, 2016 AT 11:20 AM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
Glad we could help your welcome I love to hear a positive outcome that's what were here for.
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Sunday, May 15th, 2016 AT 12:23 PM

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