Changed Plugs.... Now chugging
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Freshman User
Joined: Oct 2007
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From: Colorado
Changed Plugs.... Now chugging
Changed the plugs and boots on my 01 excursion yesterday. Truck has 80k on it and had a small mis-fire at around 1700 rpm, so I figured i'd do plugs and coil boots. Was alot easier than i thought it would be..... By the way, dealer said torque specs for plugs was 11 ft lbs. but i torqued them to 20....
Now truck Has no mis-fire at 1700, but is mildling "chugging" from a takeoff. Almost feels like an injector. Any ideas before i Tear it apart again?
Now truck Has no mis-fire at 1700, but is mildling "chugging" from a takeoff. Almost feels like an injector. Any ideas before i Tear it apart again?
More Turbo
Joined: Feb 2004
Posts: 705
Likes: 40
You might have a bad resistor in one of your spark plugs or a piece of dirt between the seat where the plug meets the cylinder head. Dirt under the seat would give a good torque reading but the plug would not actually be tight. It will eventually back itself out if that's the case. If you find one loose when you remove them, that's very likely your problem. Did you blow the spark plug wells out with compressed air to get rid of all the dirt before you removed the old plugs?
Lou
Lou
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Freshman User
Joined: Oct 2007
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From: Colorado
OK, chugging got worse and now has a very noticable mis-fire at most low rpm speeds. So i changed the plugs, Again, thinking maybe a fouled plug. New plugs but the same result.........I guess now i'll do 10 new coils. Any Ideas would be apreciated
Thanks
Thanks
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Joined: Nov 2007
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From: Dallas Ga.
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Posting Guru
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Unplug one coil at a time in order to identify what cylinder(s) are your problem. Dont throw 10 coils at it!
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