Just did plugs, wires, cap, rotor

ANONYMOUS

MEMBER
1998 DODGE DURANGO
160,000 MILES

Just did plugs, wires, cap, rotor. Still kicking and bucking. When it does no power can put pedal to the floor and very little increase. But rpms really don't go down. Back fires at times too during this.

Saturday, December 1st, 2012 AT 9:19 PM

5 Replies

JDL

MECHANIC
16,098 POSTS

Did you check your fuel pressure? Can you check applicable trouble codes? Check your timing chain.

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Saturday, December 1st, 2012 AT 9:31 PM

SABRINACRADER

MEMBER
2 POSTS

Yes I have have the fuel system check, pressure and out put checked out fine. It did throw a code of misfire on 2, 3, 4, and 8, but that was before plugs and all.

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Saturday, December 1st, 2012 AT 9:37 PM

JDL

MECHANIC
16,098 POSTS

Any present codes? Did you visually check for spark at misfire cylinders? Did you check injector pulse? You may need compression test?

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Saturday, December 1st, 2012 AT 9:58 PM

SABRINACRADER

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2 POSTS

No present codes. Replaced wires, plugs, cap, and rotor. What is injector pulse? Did have a shop tell me they thought it was burnt valve. Does this even seem like that could be it. When it started it was very random, only doing it every so often. Slowly became worse to the point of doing it at 70mph down the freeway.

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Saturday, December 1st, 2012 AT 10:05 PM

JDL

MECHANIC
16,098 POSTS

Without injector pulse, no fuel in cylinder. You can use a noid lite to check injector pulse. The autostore sells it.

Hopefully a cylinder compression test would show valve problem.