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Old 06-24-2014, 08:35 PM   #1
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Engine Misfire

Having trouble tracking down the source of an engine misfire in my 96 GT. Just the 2v 4.6l. Seems to happen at higher RPM, usually in 3rd or 4th gear. Really starts to miss if I shift into 5th though.

So far I have changed the plugs, coilpacks, and wires with no luck. Happens whether I'm running a tune (Bama) or not.

What would be next on the checklist? EGR valve? Fuel filter? Maybe a bad or dirty injector?
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Old 06-24-2014, 08:48 PM   #2
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Definitely do the fuel filter!
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Old 06-25-2014, 08:58 AM   #3
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Quote:
Originally Posted by 96GeeTee View Post
Having trouble tracking down the source of an engine misfire in my 96 GT. Just the 2v 4.6l. Seems to happen at higher RPM, usually in 3rd or 4th gear. Really starts to miss if I shift into 5th though.

So far I have changed the plugs, coilpacks, and wires with no luck. Happens whether I'm running a tune (Bama) or not.

What would be next on the checklist? EGR valve? Fuel filter? Maybe a bad or dirty injector?
OP-Sorry to hear about the trouble! Before I even finished I was shooting right towards ignition but I might recommend looking into your EGR and swap the filter if you haven't in a while!

-Alex
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Old 06-25-2014, 05:27 PM   #4
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I'm missing at higher tons due to a leaky intake...spray WD around tb, intake, etc and listen for idle changes, that's how I found my leak

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---------- Post added at 02:27 PM ---------- Previous post was at 02:27 PM ----------

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Originally Posted by fomoco4life View Post
I'm missing at higher tons due to a leaky intake...spray WD around tb, intake, etc and listen for idle changes, that's how I found my leak

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Rpms not tons lol

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Old 06-25-2014, 09:07 PM   #5
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If its starving for fuel at higher RPMs then its a good chance you need a new fuel filter.
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Old 06-25-2014, 09:18 PM   #6
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Or it might be the fuel pump lol I just had mine changed today on my 04 mustang gt it had a problem when I would bring it to higher rpms it would lose power


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Old 06-25-2014, 10:06 PM   #7
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I just bought the car in February and got it on the road in May, so I have no idea how long ago the fuel filter was cleaned or swapped out. I'll definitely try to do that next and post when I find out how it goes. Thanks for all the quick replies!
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Old 06-25-2014, 10:09 PM   #8
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Yah same I bought mine in like December got my license in February put it on the road first thing I had to do was change the fuel filter and then my car had a problem when it would loose power at higher rpms I delt with it for a couple of months now I just got it fixed lol and it's a beast lol


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Old 06-26-2014, 02:47 PM   #9
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On my way home from work today I actually stopped off and got my oil changed, and wouldn't you know it ran smooth the rest of the way home even at WOT. I had no idea when the oil was changed by the previous owner last, but I ran it maybe 2,000 miles since I bought it. Only ran it about 20 miles or so home, but so far so good. Fingers crossed the problem stays away.
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Old 06-26-2014, 02:58 PM   #10
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Lol


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Old 06-26-2014, 04:00 PM   #11
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Lol


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Old 06-27-2014, 09:24 AM   #12
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Rich what else did you do besides the fuel filter tosolve your problems?
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Old 06-27-2014, 09:26 AM   #13
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What I did to my car already is I had the fuel pump,fuel filter, and wires changed


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Old 06-27-2014, 09:32 AM   #14
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Thanks glad it worked out.
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Old 06-27-2014, 09:32 AM   #15
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What I did to my car already is I had the fuel pump,fuel filter, and wires changed


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