Skip the auto shop - Our mechanics make house calls

Q: My 2002 Honda Odyssey has a Check Engine light. It's supposed to be a misfire. The mechanic adjusted valves and changed coils but the issue remains

asked by on

My 2002 has check engine light, supposed to be a misfire. The mechanic adjusted valves an issue remains, changed coil issue remains. Mechanic believes it may be a head.

My car has 94000 miles.
My car has an automatic transmission.

Hello. What problem code is stored for the Check Engine light? Hopefully all the plugs and all the coils were changed. If there was oil leaking (from the valve cover gasket) onto the plugs or rubber coil boots, this can cause shorting and a misfire. Unless a valve is burned, it’s unlikely a "bad head" is the cause of the misfire. A blown head gasket could cause a misfire - although other symptoms would be evident: overheating, loss of coolant, white smoke that smells sweet out of the tailpipe. If you would like a 2nd opinion, I would recommend having an engine is misfiring inspection completed by a mobile, professional mechanic, such as one from YourMechanic, who will come to your location, diagnose this problem, give you an accurate assessment of damage and cost for repairs.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  • Home
  • Questions
  • My 2002 Honda Odyssey has a Check Engine light. It's supposed to be a misfire. The mechanic adjusted valves and changed coils but the issue remains

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Loud knocking sound when engine is running

Internal engine components each have their own signature noise. An experienced technician can often get a good idea of what is causing a knock by listening to the sound. A connecting rod bearing usually sounds off when you rev the...

Q: Multiple misfire codes and hard shifting

Hello. I would start by doing a compression test. From the codes you are getting to the way that is is running and the sound that you hear it sounds like you have a failed valve seat. When this occurs...

Q: Humming noise, wheel bearing issue, and two evap leaks

Regarding the right, front wheel bearing, you can confirm this diagnosis by turning left at moderate speeds (i.e. freeway on-ramp). The noise will increase during the turn (which loads the right front wheel bearings). Regarding the squeal while turning...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...