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98 altima gxe missing.changed plugs &wires. Still misfireing. Like a plug is out. Idling and driving. Found broken vacum line fixed it. Stil missing. Any help

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  • Dr phil.I.A.M.E Dec 05, 2019

    This is pretty simple what colour is the spark if its weak yellow coil stuffed.You should have nice blue spark

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2 Answers

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  • Cars & Trucks Expert
  • 356 Answers

This also tells me this vehicle not serviced regular

Posted on Dec 05, 2019

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  • Cars & Trucks Master
  • 6,157 Answers

Any codes??? What its V6 or V4? It could be bad coils you need a code which one!

Posted on Dec 02, 2019

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6 Suggested Answers

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Posted on Jan 02, 2017

Anonymous

  • 3 Answers

SOURCE: 98 f150 cylinder 4 misfire(4.6)-

it mit be out of time try advance your disbutor

Posted on Jan 17, 2009

bunnydawg

Roberta Smith

  • 5158 Answers

SOURCE: Eratic idling and misfiring under pressure

confirm that the fuel pump delivers the proper pressure to the injectors

Posted on Mar 08, 2009

jdthefixer

  • 746 Answers

SOURCE: 2.7 l misfire after changing plugs

From karjunkie:

If the plugs get wet, then you have a spark problem somewhere in the ignition system. Pull a spark plug and hold it against a ground while you turn the engine over. You need to see a fat blue spark. If not, check the distributor, spark plug wires and coils. An easy way to test for spark is with an inexpensive spark tester. This is a device that is readily available at most auto supply stores. If the plugs do not fire properly, check the spark plug wires for fraying or cracking. Next, you need to check the coil(s). If firing voltage is low (weak spark), measure the coil primary and secondary resistance with an ohmmeter. If it is out of specifications, replace the coil. Also, make sure the coil is receiving normal voltage from the PCM or ignition module. If it is low, check the charging system for anything that may be reducing alternator output (battery and alternator cable connections, ground connections and voltage output).

Posted on Mar 22, 2009

Anonymous

  • 957 Answers

SOURCE: Misfire on 4, 5 & 6

Take your time, if its been awhile do a complete tune-up. and preliminary check a misfire can come from a defective cap and rotor, fuel and air filter. a leak in the fuel system or defective regulator.

Posted on Apr 28, 2009

Anonymous

  • 90 Answers

SOURCE: routh ilderling 94 NISSAN ALTIMA

check your fue nozzles

Posted on Jun 01, 2009

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' (oil cap) '
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Your misfire can be cause by couple of things but the cheapest way that you can try to fix your car is to do a tune up by replacing:
1)all spark plugs
2)do a oil change
3)spark plug wires
3)distributor cap and rotor

note misfire can be cause by:
1.bad gas
2.spark plug and/or wire
3.distributor cap and/or rotor
4.valve adjustment
5.injector
6.off timing
7.ECM
8.bad wiring(power, ground or feed line)

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