Misfire problem on 2004 V6

[Skyline]

I got a CEL indicating a misfire on cylinder 4. Can someone tell me which cylinder that is?

Any suggestions on fixing this aside from checking the connections? Do these coil packs have a tendency to go (I have about 110k miles, and the plugs about 5k)?

 

[jharris2]

When I've had a misfire before, it's tended to be a loose wire. But it could be any of the following:

• Open or short in engine wire
• Connector connection
• Vacuum hose connection
• Ignition system
• Injector
• Mass air flow meter
• Engine coolant temp. sensor
• Compression pressure
• Valve clearance
• Valve timing
• PCV hose connection
• PCV hose
• ECM

As to which cylinder is #4, here's what I found: http://autorepair.about.com/library/firing_orders/bl-fo-1172.htm

 

[drmorbius]

I got a CEL indicating a misfire on cylinder 4. Can someone tell me which cylinder that is?

Any suggestions on fixing this aside from checking the connections? Do these coil packs have a tendency to go (I have about 110k miles, and the plugs about 5k)?

:iagree:.....What plugs did you use? Also check the plug insulator for cracks.