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Old October 4th, 2014, 09:00 AM   #1
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Random misfires??

I'm getting codes for random misfires on cylinders 2 4 and 5 but my car is driving and idling fine? Slight ticking but I think that's just the valves
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Old October 4th, 2014, 09:15 AM   #2
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Check the valve lash and spark plugs.
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Old October 4th, 2014, 09:56 AM   #3
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Check the valve lash and spark plugs.
Just changed spark plugs 1000 miles ago so it's probably valve lash. Thanks.
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Old October 4th, 2014, 07:47 PM   #4
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Uhhh... Not to be a **** but there are tons of threads on this if you hit the "search" button.

Here is one that was just made and now we have this one. Please search,bud. Nearly identical, already covered topics just clutter the site.

http://www.v6performance.net/forums/...-misfires.html
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Old October 4th, 2014, 08:41 PM   #5
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Quote:
Originally Posted by accord325 View Post
Uhhh... Not to be a **** but there are tons of threads on this if you hit the "search" button.

Here is one that was just made and now we have this one. Please search,bud. Nearly identical, already covered topics just clutter the site.

http://www.v6performance.net/forums/...-misfires.html
Lol ok mayne thx for letting me know
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Old October 4th, 2014, 10:49 PM   #6
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One bad coil can cause multiple misfire codes.
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Old October 9th, 2014, 12:54 AM   #7
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Sorry but how would a bad coil pack cause misfires on more than one cylinder
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Old October 9th, 2014, 05:26 AM   #8
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If u need coil packs I have some spares. lmk
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Old October 9th, 2014, 06:36 AM   #9
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If u need coil packs I have some spares. lmk
If codes pop up again I will contact you. Thanks.
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Old October 9th, 2014, 04:24 PM   #10
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Sorry but how would a bad coil pack cause misfires on more than one cylinder
I don't really know for sure, but there have been some owners with one bad coil, and multiple misfire codes. I guess it throws the timing off enough when one cylinder misfires, that multiple misfire codes are set. If the engine is idling rough, unplug each coil from the wire harness, one at a time. If nothing changes when the coil is disconnected, you've found your bad coil. Then, you can switch the suspected bad coil to another cylinder to confirm that the coil, and not the wires going to it, is bad.
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Old October 26th, 2014, 07:51 PM   #11
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do a compression check. do a dry first, then a wet. if the numbers are the same, it's in the head.

it's quick and easy to do and will rule out a lot of things.
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Old October 27th, 2014, 08:21 AM   #12
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Code p0497 (evap system low purge flow) would have nothing to do with my misfires right?
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Old October 27th, 2014, 08:37 AM   #13
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loose gas cap?
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Old October 28th, 2014, 04:22 PM   #14
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Ok so I did a compression test .-. bad news
Cylinder 1 - 180psi
2 - 110psi
3 - 205psi
4 - 150psi
5 - 110psi
6 - 110psi

:-( forgot to do a wet test but I'm assuming bent valves from 2 mis shifts. Going to do a wet test tomorrow though to make sure. Should I just buy valves for cylinders 2 4 5 and 6? Anything would be helpful.
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Old October 29th, 2014, 12:42 PM   #15
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So it's the piston rings because of the results I got on the wet test. Going to buy another engine j30a4/5 or j32a3. If I bored the j30a4 wouldn't it basically be the same as a j32a3? I'm under the impression that they have the same crank.
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