oook little problem- any ideas?

kaptain · 11-12-2008, 06:32 PM

Well its been a while since I've posted but hopefully the PNW Lightning gurus will forgive me and impart some of their knowledge on me.

I started up the truck to go for a drive monday, and noticed it was running a little rough. When I got to the freeway on ramp and started accelerating there was a strong misfire and the CEL started flashing at me. I babied it home and pulled the codes; its throwing a P0308 which is Cylinder #8 Misfire Detected according to my list.

I pulled and changed plugs in both 7 and 8 for comparison, and both looked perfect. Took it for a drive around the block and nothing had changed.

So I thought maybe a bad injector. I swapped injectors from 6 and 8, cleared the DTC's and went out for another drive. Again it threw a misfire cylinder #8 code.

Any ideas what it could be? Thanks guys!

bafi20 · 11-12-2008, 06:53 PM

Only thing that comes to mind right now is a bad COP. I'm sure more knowledgeable guys and gals will come along and give you more things too look at.

francis

TomnSarah · 11-12-2008, 08:19 PM

I agree that it probably is a Coil Pack. My advise is to swap the coil from #8 to another cylinder that is easy to get to. Clear the code and drive again. If the code returns to the different hole you know the problem! Tom

billyd · 11-12-2008, 09:20 PM

it's your coil

kaptain · 11-12-2008, 10:36 PM

Awesome, thanks guys! I'll try and get that done tomorrow and let you know how it goes!

kaptain · 11-15-2008, 09:18 PM

That did it! Thanks guys!

11-12-2008, 06:32 PM	#1 (permalink)
kaptain InternalCombustionJunkee Join Date: Oct 2007 Location: Bellingham, Wa Posts: 150 View this user's gallery iTrader: 0 / 0%	oook little problem- any ideas? Well its been a while since I've posted but hopefully the PNW Lightning gurus will forgive me and impart some of their knowledge on me. I started up the truck to go for a drive monday, and noticed it was running a little rough. When I got to the freeway on ramp and started accelerating there was a strong misfire and the CEL started flashing at me. I babied it home and pulled the codes; its throwing a P0308 which is Cylinder #8 Misfire Detected according to my list. I pulled and changed plugs in both 7 and 8 for comparison, and both looked perfect. Took it for a drive around the block and nothing had changed. So I thought maybe a bad injector. I swapped injectors from 6 and 8, cleared the DTC's and went out for another drive. Again it threw a misfire cylinder #8 code. Any ideas what it could be? Thanks guys!

11-12-2008, 10:36 PM	#5 (permalink)
kaptain InternalCombustionJunkee Join Date: Oct 2007 Location: Bellingham, Wa Posts: 150 View this user's gallery iTrader: 0 / 0%	Awesome, thanks guys! I'll try and get that done tomorrow and let you know how it goes! __________________ Ford didnt make a 4x4 Lightning... But I DID!

11-15-2008, 09:18 PM	#6 (permalink)
kaptain InternalCombustionJunkee Join Date: Oct 2007 Location: Bellingham, Wa Posts: 150 View this user's gallery iTrader: 0 / 0%	That did it! Thanks guys! __________________ Ford didnt make a 4x4 Lightning... But I DID!

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11-12-2008, 06:53 PM	#2 (permalink)
bafi20 Registered User Paid Member Join Date: Jun 2003 Location: washington Posts: 705 NLOC member #: 1433 View this user's gallery iTrader: 1 / 100%	Only thing that comes to mind right now is a bad COP. I'm sure more knowledgeable guys and gals will come along and give you more things too look at. francis

11-12-2008, 08:19 PM	#3 (permalink)
TomnSarah Helo Pilot Paid Member Join Date: Nov 2004 Location: Marysville, Wa Posts: 77 NLOC member #: 1698 View this user's gallery iTrader: 0 / 0%	I agree that it probably is a Coil Pack. My advise is to swap the coil from #8 to another cylinder that is easy to get to. Clear the code and drive again. If the code returns to the different hole you know the problem! Tom

11-12-2008, 09:20 PM	#4 (permalink)
billyd 99 black lightning Join Date: Dec 2007 Location: mass Posts: 423 View this user's gallery iTrader: 0 / 0%	it's your coil