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What does a spark plug being bent mean?

Changed timing belt...cranked car and pulled plugs..spark plug bent in cylinder 1

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  • William Mckoy
    William Mckoy Nov 03, 2012

    The car started, is it possible to bent the valve if the timing belt installed incorrectly? How can you tell if valve is bent?

  • ingman3
    ingman3 Nov 03, 2012

    Yes, it is. Without removing the valve cover it could be very hard to tell if a valve is bent, although if that is the case, the engine will normally run rough.



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If the car didn't start after the timing belt replacement, it is highly possible the timing was not reset correctly, causing a valve to be bent by the piston, and pushed into the spark plug.

Posted on Nov 02, 2012


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Posted on Jan 02, 2017

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SOURCE: 1998 Cavalier No Spark in cylinders 1 & 4

ignition mod. grounds,pcm or timing belt could all be it but, I would have to look at timing first.

Posted on Jan 17, 2009

  • 14036 Answers

SOURCE: 2001 Galant ES-V6 DTC is P0304 - Cylinder #4 misfire

look for weak valve springs.

Posted on Jun 22, 2009

  • 114 Answers

SOURCE: 1997AudiA6Quatro2.8L-aligning cam and crankshaft for timing belt

You must find the cam lock bar and crank lock pin to do this job properly, otherwise you can bend some valves and that becomes expensive..the front crank damper has a mark to line up with a mark on the timing cover for #1 TDC, but the cam lock bar is what aligns the cams into position. The crank lock pin is helpful but not 100% necessary...

Posted on Sep 16, 2009

  • 301 Answers

SOURCE: oil in 1 1997 chrysler lhs spark plug tube

although I am not familiar with this particular engine my son's Mazda Miata had oil in the plug holes and it only required a new valve cover gasket to fix it.

Posted on Oct 18, 2009

  • 122 Answers

SOURCE: changed timing belt on my 99 ford escort zx2 car no

if you have a no spark scenario i would check your crank sensor located at the top left side of the harmonic balance pulley.the crankshaft (about 11'oclock) a 2 wire plug with a sensor on it check to see if it is damaged or unsecured. this sensor can cause no spark if not working correctly. This sensor is based of frequency not voltage testing is difficult, just make sure that there isnt too muck air gap. and that it is secured.Lastly may want to check timing possible that the belt has jumped some teeth and she has fallen out of timing. maybe a bad tensioner The coil will adapt i think up to 10 degree, ****** or advance. Good luck

Posted on Apr 18, 2010

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Wont star

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