'97 a4 P0302 - cylinder #2 misfire,
 

new plugs and ignition coil. both worked fine when swapped with cylinder #1...still said #2 was bad.

refurbed fuel injectors for 30 bucks...thinkin about goin for that next unless anyone has any info.

thanks

16686/P0302/000770 - Cylinder 2 Misfire Detected
Possible Causes
Ignition system
Fuel injectors
Fuel pressure
Running out of fuel
EVAP canister purge valve
Evaporative emission system
Low compression
Base engine problems
Controle Module damaged
Special Notes
This feature search for engine misfire in a specific cylinder. Most of the time the cause for a misfire is a lack of combustion in a cylinder due to absence of spark, poor fuel metering, or poor compression.

thanks for that list crazyhawk...i think its the ignition system.

tested for spark on cyl. #2 and nothing. its not the coil and its not the spark plug...wiring harness plugs right into the coils so what else is there?

When does it occur?

If it's in the morning or on cold start check the cylinder for oil or coolant.
oil = valve seals, most likely
coolant = head gasket, most likely

thx for tryin to help man.

#2 just doesnt run at all...i tested for spark and no spark. coil and plug both worked in other cylinders. plug doesnt come out with oil on it. at TDC, it doesnt look like anything is leakin on the piston, but still doesnt mean its not happenin. ignition coil connection looks fine...i cant figure it out so i gotta dish out 150 bucks for a shop to tell me whats wrong...i'll try n remember to post up the problem. its got a few other people scratchin their heads too.

Check the ignition control module. They cause cylinder 2 misfires.

is that the big box you follow the coil wires into, infront of the driver side under the hood?

It's on the air box.

finally got around to it, it was the control module. dealer wanted over 300 for it, found one for 60 bucks online.

thanks a lot foreveryones input, much appreciated!

Make sure you you have fire at that plug. You can buy a hand held spark tester for quick checks at the local parts store. It looks like an ink pin and you hold it against the plug wire or you can hold it on top of some coil on plug systems. If you have spark next check for fuel. Try to listen to the fuel injector when the engine is running. If it clicks you know the injector is at least trying to work. You could have a plugged injector or bad injector. Good luck.
anthonyz Tony@zippyoil.com