So after leaving work after a terrible day I was sitting in traffic and my check engine light comes on. I figure no big deal because the idiots at the full service gas station by me never tighten the gas cap enough which causes a CEL to appear. I went to autozone to do an OBDII test and it turns out my cylinder #4 missfired. I know the main reasons this would happen are spark plugs or maybe a valve adjustment. Well I just had the plugs replaced by Honda due to a recall about 12 months ago and did a valve adjustment back in may 07'. Also the CEL went off after 2 days or so. So now I am confussed. Do you guys have any ideas on what else could be wrong? I am always hesitant to take the car to the dealer cause they charge me $100 bucks for a diagnostic and usually tell me nothing is wrong. The car is an 02' with 62,xxx miles. Any help would be appreciated.

-Eric


Modified by TypeR324 at 12:39 PM 4/25/2008


Modified by TypeR324 at 2:21 PM 4/25/2008

 

Coilpacks. The earlier ones are known to go bad. 3 of mine failed (at the same time) about a month ago, and I've had problems with overheating on the car since. I'm also turbo charged, so a misfire would be more damaging to me than with you (assuming you're still NA). I replaced the coilpacks and haven't had a misfire issue since.

 

Yea im NA, never heard of coilpacks goin bad but then again what do I know. I am startin to think that this issue could possibly be related to my burning oil issue. I burn about 1.5-2 quarts every 3-4k. I have also noticed that at high RPM's (8400-9000) that I do get a bit of exhaust smoke. My buddy just mentioned that to me the other day when I toasted his CL Type S. Could all these issues possibly be related?

 

plug, injector, coil pack could all be the cause

start cheap

 

take your plugs, coils and injectors and swap them around. you may have to do this a set at a time, so you can write down where everything went and keep track of it. lets say you happen to move the #4 injector to #2 cylinder and the CEL comes back on #2 then you know thats the problem...


also do a quick compression test and see how healthy the engine is. you compression should be around 210+psi.

 

I dropped the car off at the dealership an hour ago and they seem to think its the spark plug but I had all 4 replaced in January of 07' so i don't think its that. They said that they may do a compression test but are not sure if they will need to. This is the third Honda dealership I have taken my car to, and I have hated them all. I really need to find a good mechanic in Mass.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by TypeR324 &raquo;</TD></TR><TR><TD CLASS="quote">I dropped the car off at the dealership an hour ago and they seem to think its the spark plug but I had all 4 replaced in January of 07' so i don't think its that. They said that they may do a compression test but are not sure if they will need to. This is the third Honda dealership I have taken my car to, and I have hated them all. I really need to find a good mechanic in Mass.</TD></TR></TABLE>

or you can do it yourself... we just told you exactly what to do, why go and pay some *** to do it for you when is really minor work that any respectable human male should know.

 

the main reason ur car is falling apart is because its an AP1... sell it and get an AP2

on a serious note: <TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by GRAF-FITI &raquo;</TD></TR><TR><TD CLASS="quote">plug, injector, coil pack could all be the cause

start cheap</TD></TR></TABLE>

i agree

 

Yup it was the coilpack, I go to the dealer by the way because I have an extended warranty. My problem is now that I am stuck here at work because the dealer will not have the part till tuesday they are telling me that I could damage the other coilpacks if I drive the car the way it is. Is that true or do they just have no clue. Thanks.

 

tell them to give you a loaner cr

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by TypeR324 &raquo;</TD></TR><TR><TD CLASS="quote">Yup it was the coilpack, I go to the dealer by the way because I have an extended warranty. My problem is now that I am stuck here at work because the dealer will not have the part till tuesday they are telling me that I could damage the other coilpacks if I drive the car the way it is. Is that true or do they just have no clue. Thanks. </TD></TR></TABLE>

Yes it's true.

Told you it was the coilpacks.

 

Well I ended up gettin a rental and leavin my car at the dealer for the weekend. Yup I will be spending this sunny weekend in a purple Nissan Versa.... sweet.

 

hrmmmmm mine studderes and misfires badly when the engine isn't warm or at any rpm below 1000......anyone have the resistance's for the coil packs? i just recently had one go bad on my bike and tested primary and secondary resistance to find the bad one!

Soo resistance specs for 02 coil packs???

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by m R g S r &raquo;</TD></TR><TR><TD CLASS="quote">hrmmmmm mine studderes and misfires badly when the engine isn't warm or at any rpm below 1000......anyone have the resistance's for the coil packs? i just recently had one go bad on my bike and tested primary and secondary resistance to find the bad one!

Soo resistance specs for 02 coil packs???</TD></TR></TABLE>

why don't you test them all and see if theres any major dfifference on anyone?