Misfire Issues - Mustang Evolution

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Old 08-20-2014, 07:03 PM   #1
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Misfire Issues

Hello guys...

I went to have the CEL codes run on my 2000 Mustang and the code p0302 came back for Cylinder Number 2 Misfire detected. The possible causes list was crazy long and the potential fixes were even longer. Just crazy! I need my car to pass emissions and I do not think it will with this kind of issue. Anybody out there with some experience with this particular code who can help narrow down the cause and fix?

Thanks!!!
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Old 08-21-2014, 05:38 PM   #2
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It's most likely either a plug, plug wire, or an injector. Start with the cheapest and go from there but if you have to pass an emissions test soon it's probably a good idea to just do a basic tune up which is plugs plug wires a coil pack and throw some fuel injector cleaner in your gas tank. Maybe even an air filter while your out it, the air filter isn't causing your problem because it's only one cylinder that's misfiring but check it and if it's dirty replace it. It's always good to have a clean air filter.


1967 coupe 351w 5 speed dual exhaust long tube headers, 2000 v6 5 speed dual exhaust lowering springs drilled and slotted rotors, 2005 ford ranger single cab 3.0 under drive pulleys auto 8.8 rear end with 4.10 gears
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Old 08-21-2014, 06:00 PM   #3
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Thanks for that advice. I am putting new plugs and wires tomorrow. While I am at it. Can you answer this... A mechanic told me I needed a donut ring/gasket on the exhaust
However, I cannot find one at any auto parts store. I keep being directed an exhaust flange gasket.

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Old 08-21-2014, 06:05 PM   #4
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That's the same thing it's the gasket between the manifolds and the down pipe. It looks like a donut that's why people call it that.


1967 coupe 351w 5 speed dual exhaust long tube headers, 2000 v6 5 speed dual exhaust lowering springs drilled and slotted rotors, 2005 ford ranger single cab 3.0 under drive pulleys auto 8.8 rear end with 4.10 gears
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Old 08-21-2014, 06:23 PM   #5
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Awesome... Thanks for the help!!!

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Old 08-21-2014, 07:10 PM   #6
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One more time... I just left O'Reilly Auto Parts and they said my year Mustang did not call for the Exhaust Flange gasket, just the exhaust flange itself. They have now added to the confusion. Any ideas?

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Old 08-21-2014, 07:11 PM   #7
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Have you actually seen these parts? Or are you just going by what they say to you?


1967 coupe 351w 5 speed dual exhaust long tube headers, 2000 v6 5 speed dual exhaust lowering springs drilled and slotted rotors, 2005 ford ranger single cab 3.0 under drive pulleys auto 8.8 rear end with 4.10 gears
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Old 08-21-2014, 07:14 PM   #8
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I have seen the the flange and the flange gasket, both online. The auto parts store said my model of car does not call for the gasket, just the flange. However, the mechanic who looked at my car said it required a gasket.

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Old 08-25-2014, 10:43 AM   #9
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Guys... I got rid of the misfires all it needed was new plugs. I replaced all 6 and we are good as gold on the Cylinder 2 misfire... Thanks!
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Old 08-25-2014, 11:35 AM   #10
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Glad to hear. Good job! It's nice that it was a cheap and easy fix. Now enjoy the ride!


1967 coupe 351w 5 speed dual exhaust long tube headers, 2000 v6 5 speed dual exhaust lowering springs drilled and slotted rotors, 2005 ford ranger single cab 3.0 under drive pulleys auto 8.8 rear end with 4.10 gears
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Old 08-25-2014, 12:34 PM   #11
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Thanks... Rides much better as well. Next up is to get this gasket squared away
..
😃

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Old 08-25-2014, 01:35 PM   #12
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Yeah is it a noticeable leak or is the mechanic trying to make easy money off you?


1967 coupe 351w 5 speed dual exhaust long tube headers, 2000 v6 5 speed dual exhaust lowering springs drilled and slotted rotors, 2005 ford ranger single cab 3.0 under drive pulleys auto 8.8 rear end with 4.10 gears
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Old 08-25-2014, 01:49 PM   #13
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Quote:
Originally Posted by Bravebowhunter View Post
Yeah is it a noticeable leak or is the mechanic trying to make easy money off you?


1967 coupe 351w 5 speed dual exhaust long tube headers, 2000 v6 5 speed dual exhaust lowering springs drilled and slotted rotors, 2005 ford ranger single cab 3.0 under drive pulleys auto 8.8 rear end with 4.10 gears
There is actually not a leak at all that I can see, but he made the estimation based on the sound it is making when you accelerate.
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Old 08-25-2014, 02:30 PM   #14
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What kind if exhaust do you have and what kind of sound is it making?


1967 coupe 351w 5 speed dual exhaust long tube headers, 2000 v6 5 speed dual exhaust lowering springs drilled and slotted rotors, 2005 ford ranger single cab 3.0 under drive pulleys auto 8.8 rear end with 4.10 gears
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Old 08-25-2014, 04:20 PM   #15
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It is just a regular stock exhaust and the noise is like a small knocking/ticking at a high speed when I accelerate. I can hear it down below.

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Old 08-25-2014, 04:28 PM   #16
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Yeah ok there's a leak. Lol the best thing to do would be to get under there and look at the exhaust find the leak(s) and look for your self what the gasket looks like and then go to the store


1967 coupe 351w 5 speed dual exhaust long tube headers, 2000 v6 5 speed dual exhaust lowering springs drilled and slotted rotors, 2005 ford ranger single cab 3.0 under drive pulleys auto 8.8 rear end with 4.10 gears
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Old 08-25-2014, 04:42 PM   #17
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An actual fluid leak being caused by needing a new Donut Gasket

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