# Evo owners come on in **URL:** \ **Category:** NYSpeed Automotive\ **Created:** [November 21, 2008, 9:25pm UTC](https://forums.speedlife.net/t/evo-owners-come-on-in/58582 "2008-11-21T21:25:29Z")\ **Posts on this page:** 12\ **Page:** 1
**Author:** ![Sansone](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/sansone/32/4970_2.png) [@Sansone](https://forums.speedlife.net/u/Sansone)\ **Post date:** [November 21, 2008, 9:25pm UTC](https://forums.speedlife.net/t/evo-owners-come-on-in/58582/1 "2008-11-21T21:25:29Z")
I have an 03 evo, and I was wondering if any of you guys have had a run in with the P0300 misfire? basically, the engine senses some vibrations and mistaken s it for knock, putting my car in limp mode until I let off of the throttle. This only happens here and there and it happens with my tune and happened before my tune. Anyone had this problem? Any suggestions? I am going to getting different plugs to start, seeing how I have the iridiums that your not suppose to gap… Any input would help, thanks guys ---
**Author:** ![psphinx81](https://avatars.discourse-cdn.com/v4/letter/p/e9a140/32.png) [@psphinx81](https://forums.speedlife.net/u/psphinx81)\ **Post date:** [November 22, 2008, 5:06am UTC](https://forums.speedlife.net/t/evo-owners-come-on-in/58582/2 "2008-11-22T05:06:36Z")
whats done to your car? change out the plugs ---
**Author:** ![Jeller](https://avatars.discourse-cdn.com/v4/letter/j/bc8723/32.png) [@Jeller](https://forums.speedlife.net/u/Jeller)\ **Post date:** [November 22, 2008, 5:27am UTC](https://forums.speedlife.net/t/evo-owners-come-on-in/58582/3 "2008-11-22T05:27:34Z")
Mod List? Tuned by? Miles on it? Fuel? ---
**Author:** ![BadnewsMike](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/badnewsmike/32/7419_2.png) [@BadnewsMike](https://forums.speedlife.net/u/BadnewsMike)\ **Post date:** [November 22, 2008, 6:37am UTC](https://forums.speedlife.net/t/evo-owners-come-on-in/58582/4 "2008-11-22T06:37:08Z")
I had a similar problem, I changed out my plugs with OEM NGK and it would fix it till my running pig rich would ruin them again… ---
**Author:** ![pirite](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/pirite/32/5308_2.png) [@pirite](https://forums.speedlife.net/u/pirite)\ **Post date:** [November 22, 2008, 6:54am UTC](https://forums.speedlife.net/t/evo-owners-come-on-in/58582/5 "2008-11-22T06:54:47Z")
so if im totally wrong i can take it but all the googleing ive done come up with a P0300 misfire as being a cylinder misfire. am i right or wrong? and if im right heres what theyve got for ideas: \* Faulty spark plugs or wires \* Faulty coil (pack) \* Faulty oxygen sensor(s) \* Faulty fuel injector(s) \* Burned exhaust valve \* Faulty catalytic converter(s) \* Stuck/blocked EGR valve / passages \* Faulty camshaft position sensor \* Defective computer ---
**Author:** ![Carnut](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/carnut/32/7590_2.png) [@Carnut](https://forums.speedlife.net/u/Carnut)\ **Post date:** [November 22, 2008, 7:23am UTC](https://forums.speedlife.net/t/evo-owners-come-on-in/58582/6 "2008-11-22T07:23:16Z")
P0300 is a misfire code and is set when the engine misfires. I would check your ignition related components first and go from there, check the wires for burn marks and check the coils for the same. I would run NGK copper plugs in your car but that’s just me. Gap to .028. Good luck. 🙂 ---
**Author:** ![neonglh](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/neonglh/32/4951_2.png) [@neonglh](https://forums.speedlife.net/u/neonglh)\ **Post date:** [November 22, 2008, 10:52am UTC](https://forums.speedlife.net/t/evo-owners-come-on-in/58582/7 "2008-11-22T10:52:08Z")
> [@pirite](#): > > so if im totally wrong i can take it but all the googleing ive done come up with a P0300 misfire as being a cylinder misfire. am i right or wrong? You are right, but that is like saying 1 = 1, heh. He already posted up that it thinks it has a misfire. :eekdance: ---
**Author:** ![Sansone](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/sansone/32/4970_2.png) [@Sansone](https://forums.speedlife.net/u/Sansone)\ **Post date:** [November 22, 2008, 10:56am UTC](https://forums.speedlife.net/t/evo-owners-come-on-in/58582/8 "2008-11-22T10:56:33Z")
mods are: -3in turboback -cone filter -mbc set at 22lbs -walbro 255 49k on the car, im thinking its those plugs, thanks for the help so far guys, keep it coming ---
**Author:** ![psphinx81](https://avatars.discourse-cdn.com/v4/letter/p/e9a140/32.png) [@psphinx81](https://forums.speedlife.net/u/psphinx81)\ **Post date:** [November 22, 2008, 4:01pm UTC](https://forums.speedlife.net/t/evo-owners-come-on-in/58582/9 "2008-11-22T16:01:19Z")
stock clutch? ---
**Author:** ![EVOLUTION\_VIII\_MR](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/evolution_viii_mr/32/5187_2.png) [@EVOLUTION\_VIII\_MR](https://forums.speedlife.net/u/EVOLUTION_VIII_MR)\ **Post date:** [November 22, 2008, 11:48pm UTC](https://forums.speedlife.net/t/evo-owners-come-on-in/58582/10 "2008-11-22T23:48:26Z")
i got this code on my car also changed the plugs made no difference for code but car felt better for me its the clutch i have which is chattery im awaiting a new tune to eliminate this code best thing id do for you is to change the plugs and check the wires ---
**Author:** ![Sansone](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/sansone/32/4970_2.png) [@Sansone](https://forums.speedlife.net/u/Sansone)\ **Post date:** [November 23, 2008, 10:55am UTC](https://forums.speedlife.net/t/evo-owners-come-on-in/58582/11 "2008-11-23T10:55:03Z")
yes stock clutch, she holds good, kinda has a little slip going from 2nd to 3rd past 7000rpms… yeah im going for the plugs, wires check fine, no cel though but the guys on evom are still pointing to that misfire code ---
**Author:** ![AShort](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/ashort/32/4947_2.png) [@AShort](https://forums.speedlife.net/u/AShort)\ **Post date:** [November 23, 2008, 11:26am UTC](https://forums.speedlife.net/t/evo-owners-come-on-in/58582/12 "2008-11-23T11:26:33Z")
id check the plugs and wires like stated above. Change if needed…if you still geta misfire with plugs…maybe check to see if you have a weak spark