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2000 Ford Ranger Spark Plugs

Tiny
TECHIEMAN316
  • MEMBER
  • 2000 FORD RANGER
Engine Mechanical problem
2000 Ford Ranger 6 cyl Four Wheel Drive Automatic 100K miles

What would cause spark plugs to wear out quickly. I have replaced (2) plugs in CYL 3 in less than a year. Engine code P304 says misfire at CYL 4 but the plug at CYL 3 is the culprit.
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Sunday, October 26th, 2008 AT 7:44 AM

1 Reply

Tiny
2CARPRO JACK
  • MECHANIC
  • 11,533 POSTS
A weak injector can cause the cylinder temp to rise due to lean mixture and can burn them up. Are you using Motorcraft plugs? If so it could be the injector. Spray around the intake runner with carb cleaner too to be sure there isnt a vacuum leak leaning out the cylinder, the idling rpm will change if there is a leak and you spray it
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Sunday, October 26th, 2008 AT 8:35 AM

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