i have a cylinder 1 misfire and do not kno how to fix. i took it to 6 mechanics and they dont know. i changed the plugs, wires, distributor, cap, rotor, ecu, fuel injectors and i think thats it i need help

 

year of car? engine transplant? if so what engine

most likely need to replace cap rotor wires and plugs and if that does not do it ignition module

 

x2

I posted this in your other thread as well: question need help asap

How is your car running? Do you have a hard time starting it or does it stumble or hesitate?

If there seems to be no issues with how your car is running then just reset your ECU. Disconnect your (-) battery cable for 30sec, this will clear the code from your ECU. If the code comes back or you are having engine stumble, hard start issues here are a few things to look for.

1. Check your ignition wiring and spark plugs to ensure that all your contacts are clean and free of oxidation/contamination. Check for proper resistance in your plug wires.


2. Does your exhaust smell like sulfur (rotten eggs) This would sugest that your Catalytic converter is the cause and needs to be replaced.

3. Rarely this code could be tripped buy a faulty injector.

When was the last time you did an ignition tune up? This code can be resolved most times by replacing old worn out ignition parts, Rotor, Dist. Cap, Plugs and Wires.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by GhostAccord &raquo;</TD></TR><TR><TD CLASS="quote">x2

I posted this in your other thread as well: question need help asap

How is your car running? Do you have a hard time starting it or does it stumble or hesitate?

If there seems to be no issues with how your car is running then just reset your ECU. Disconnect your (-) battery cable for 30sec, this will clear the code from your ECU. If the code comes back or you are having engine stumble, hard start issues here are a few things to look for.

1. Check your ignition wiring and spark plugs to ensure that all your contacts are clean and free of oxidation/contamination. Check for proper resistance in your plug wires.


2. Does your exhaust smell like sulfur (rotten eggs) This would sugest that your Catalytic converter is the cause and needs to be replaced.

3. Rarely this code could be tripped buy a faulty injector.

When was the last time you did an ignition tune up? This code can be resolved most times by replacing old worn out ignition parts, Rotor, Dist. Cap, Plugs and Wires.
</TD></TR></TABLE>

Did you read his post? according to the op, everything is new (which I think is a lie) but assuming that is the truth the car should run fine.

1) a bad catalytic converter will never cause a misfire,its a physical impossibility. what it can cause is a hesitation or choking of the engine, resulting in an over all lack of power, or a no start condition.

2) Yes a clogged, or stuck open fuel injector will, and can cause a misfire code, and it is quite common.

To the OP. Have you done a compression test on cylinder#1? It is never a good idea to just throw parts at a problem and hope it goes away. Even with all new parts, if the cylinder has no compression, it willnot make enough power, and in extreme cases, cause a misfire code.

 

Good heads up on the compression test. Note if you are going to do a compresion test accordf22vtec, do it on all 4 cylinders just to be sure.

JDM_DC4_Fanatic, Liar is such a harsh word, he's only looking for help.

[QUOTE=JDM_DC4_Fanatic]
1) a bad catalytic converter will never cause a misfire,its a physical impossibility. what it can cause is a hesitation or choking of the engine, resulting in an over all lack of power, or a no start condition.
QUOTE]

This is tru but did you know that a clogged, hesitating or choking engine can throw a misfire code. Your right in saying that a malfunctioning cat may not actualy cause a physical misfire. The clogged cat could cause extra back presure and the IAP sensor could be the cause of the misfire code. The hesitation and sputtering of the engine may cause the CKF sensor to throw a misfire code.

This P0301 code if not found to be in the ignition or compression then you name it anything that the ECU doesn't think is right may cause it to throw that code. Never say never, I was just giving the guy something else to check. It's a long list after the ignition is looked after.

If it is still on after checking the ignition and doing a CT. Find someone who has access to a frame-by frame portable diagnostics computer that can data log. That will help you pin point under what conditions the code is being thrown. for example If it's when your under heavy engine load-That could be lack of fuel pressure causing a lean mixture.

 

So I had the same problem and as long as you have good compression and spark and fuel then your fine... mine was erg and silanod

 

I personally would have just suggested a compression test as part of diagnosis and skipped the whole part where all ignition parts replaced and still has a misfire is impossible so you are a liar...curious how you knew he was lying and as thorough as you portray yourself you in fact were just “throwing” judgement kinda like people do with parts. After all, he may have a compression issue and had already replaced all the ignition parts to no avail and was at a loss.
Not sure why I felt that was necessary?

 

prob the cheapest way to test would be swap the coil pack with one from the other cylinder. if the misfire moves u need a new coil pack.just happened w my car no big deal a trip to the junkyard and 20 bucks later I had a oem hatachi coil pack back in and she was running great. u need an allen key for the coil packs.goodluck!