August 15, 2004i have a 2000 5.4 and the SES light came on. went to autozone and they read the code. it said misfire #4. Where exactly is the #4 at? I assume its the COP since its doing the same thing when the #3 went, and i took it to the dealer and they****** me . I'm going to do it myself this time but don't know what side has what cylinder. thanks guys
Forums : Engines-Gasoline 8-cyl : #4 misfire question (196 Views)
August 15, 2004#4 is the passenger side rear plug. A PITA to get at so be patient.
August 15, 2004Thanks for the quick reply and advice. It had to be the back one didn't it-lol It couldn't have been an easy one for my 1st time.
August 17, 2004If you remove the harness juction box on the firewall its much easier to do, also before you put it back check to make sure your heater hoses on that side aren't leaking onto the coil/plug.
August 17, 2004Needless to say, disconnect your battery before you start poking around back there. A big ZAPP would not be a good thing. Like they say, once you let the smoke out, it's broke.
August 20, 2004A big zap indeed! I second the elementary advice to disconnect. It may save your life. Back in the old days, you'd just get a jolt, but now...BOOM and your fried.
don't need to even remove the fuel rail. just unscrew the COP and pull off the plug. The tube on the COP is flexible. If it isn't the COP or the plug it could be the injector...(maybe plugged). It could also be the fuel rail.
Also don't overtorque the plug. no more than 11 ft/lbs!
August 20, 2004Wow thats the hardest one to get to. Its hard to even see it.
August 20, 2004Greez,
I had a hard time with the #8 one more so than #4
August 20, 2004Well,i was gonna do it last sunday but he hesitation and jerking stopped and its been a week and still fine. I guess water got in the coil and maybe dried out??? dunno. should i clear the SES light? The guy at autozone wouldn't clear the SES light for me--he said it was against the law I should just buy my own code reader. Should i still replace the COP?
August 20, 2004If its been fine I wouldnt replace it. If it does it again however then you should and keep an eye on the hoses that leaks on top of the coil. Clearing the code I never heard of being against the law.
August 20, 2004Is there anything u can put on the hoses to prevent it? i tried looking for condensation or dripping but so far no luck