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Old 01-17-2014, 02:32 PM   #1
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HELP!!

99 GT, 5-speed. Only CAI and Flows aftermarket. Other than that, bone stock. Ok driving home from work, downshifted to 3rd to go around someone and POP! Big backfire and loud ticking, sounds to be from passenger side, still will run but obviously like its not on all cylinders...what are the possibilities of what happened? Still waiting on a truck and trailer at the moment...ugh, sucks bad.

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Old 01-17-2014, 03:02 PM   #2
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Maybe broke the plastic tensioner or you blew a plug out of the head.
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Old 01-17-2014, 03:09 PM   #3
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Ok, what plastic tensioner?

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Old 01-17-2014, 03:14 PM   #4
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Can you hear a loud clunking ? Or loud ticking noise coming from your engine bag?
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Old 01-17-2014, 03:20 PM   #5
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My money is on you blew a spark plug out of the head...
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Old 01-17-2014, 03:32 PM   #6
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Quote:
Originally Posted by straybullitt View Post
My money is on you blew a spark plug out of the head...

Last time I had that happen... Sounded like a GD gunshot ! Then I pulled over. And then heard a "clunk". Actually found the blown sparking under the truck. Scared the bejesus out if me.
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Old 01-17-2014, 04:25 PM   #7
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No loud clink, just very loud ticking, blown spark plug sounds like it could be it, kind of an "airy" sounding tick so very possible. Wouldnt I be able to see the coil blown off too though? Nothing visually is wrong

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Old 01-17-2014, 08:07 PM   #8
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The tensioner is for the timing chain. You could have broken one of those and that would make the timing off causing a ticking sound.
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Old 01-17-2014, 08:10 PM   #9
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As far as the coil pack goes. If the part of the coil with the bolt in it didn't break you might not be able to see the blown out plug. Real easy just unbolt the coils one at a time and pull them off. Look at the hole and make sure the spark plug is tight.
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Old 01-17-2014, 09:42 PM   #10
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Thanks guys. Ok I got it home, looked again a little closer..one of the coils IS broke at the bolt and the boot is pushed out, I was wrong. So I'll check it out in the morning. What is usually the case when this happens?, not tight enough? Or do the actually break and blow out? I've never had this happen before, just wondering.

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---------- Post added at 09:42 PM ---------- Previous post was at 09:41 PM ----------

They*

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Old 01-17-2014, 11:13 PM   #11
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When you replace the spark plugs and over torque them they strip the threads out and shoot out the plug. Gonna need to heli-coil the hole
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Old 01-17-2014, 11:17 PM   #12
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All right, I haven't changed them since I've owned it. Hope there's no other damage.

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Old 01-18-2014, 07:19 AM   #13
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Take out each spark plug, and see which ones broken.. If ones broken you have to take off your cylinder head to go get fixed
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