Misfiring issue

[naruto267]

2001 Accord Coupe Ex F23A4

Car been misfiring / hard start / stalling when engine is warm (driving for about 30mins and letting it sit for a hour). Engine would shake when starting and smooth out after couple of seconds. I would smell gas when this happens. When i turn the car off and start it within 10min it would start fine. When i start it cold, it would start fine.

There also seem to be some misfiring or rough idle. This is more prevalent when AC is turned on. There a CEL that say misfire in cylinder 1 - 3.

Trying to figure out where i should start in trying to resolve this issue.

 

[gt58]

spark plugs

 

[naruto267]

spark plugs

hi gt58, sparkplugs was replaced along with cap and rotor. Issue still remains. Also was told by someone to start car with wide open throttle so i press the gas pedal while starting the car and it starts right up without sputtering.

 

[Eclipse99fwb]

Check your spark plug wires also. Beyond that you will need to start checking your fuel injectors for power and spray. With the gas smell i would lean towards one of the injectors being the issue. If neither is the problem than it will be the ecu.

 

[naruto267]

Check your spark plug wires also. Beyond that you will need to start checking your fuel injectors for power and spray. With the gas smell i would lean towards one of the injectors being the issue. If neither is the problem than it will be the ecu.

I cleaned the EGR valve this weekend and the hot start issue seem to went away. Still misfire at idle sometimes. I also now getting intermittent P0325 code. I guess ill need to get a new know sensor now. I'll update if it comes back.

 

[thurman.]

You cleaned the EGR, changed the cap and rotor, spark plugs (wires?). I think you should clean the throttle body.
Check for vacuum leaks also.


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[naruto267]

Just an update. Coolant was leaking into cyl 1 and 2 which was causing the issues.