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My car will start may backfire once I changed plugs do I and to check timing

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  • Cars & Trucks Master
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Hi,if you are just changing the plugs you dont need to do the timing.
But what a lot of people do is just put the sparkplugs in without checking the electrode clearence,thay must be checked as thay could have droped and bashed around beforeit even gets on to the car spares shop shelf,so always check.
hope this was some help.

Posted on Apr 16, 2015

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Posted on Jan 02, 2017

  • 14 Answers

SOURCE: my car backfires and will not start.

check the fireing order of your plug wires u most likeley crossed a few wires and put them in the wrong order if u r looking at the front of the vehicle the front 3 cylenders are 2,4,6 starting from the front of the moter and the back 3 cylenders are 1,3,5 and the coil packs should be marked as to wich cylendr they go to if not the startin with the top coil pack the top plug wire pin is num1 and the second is num4 the next coil pack is 5 being the top pin and 2 being the bottem pin on the coil and the last coil pack is top pin cylender 3 and bottem is cylender 6. hope this helps

Posted on Aug 04, 2009

  • 373 Answers

SOURCE: backfiring just before it starts

Check to see if you have a crossed plug wire on truck. Also check for a cracked insulator on a spark plug or faulty spark plug wire. Check for a vacuum leak at the intake manifold, throttle body,or vacuum hose. Hope this will help you.

Posted on Jun 05, 2010

adadoug
  • 682 Answers

SOURCE: after i change timing set car wont start

If you got a backfire, the timing is off.

Posted on Dec 24, 2014

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