Water Intrusion and Premature Coil Failure (IC414)
Coils and Water Don't Mix!
On some GM models, water intrusion
will causes premature failure of the coil
and spark plugs—it's not a coil problem!
Signs of Premature Failure
If a customer complains of a rough idle
and/or the MIL/SES light flashes on
after a rain shower or carwash, this may
indicate
water
intrusion.
Check for
possible DTC
codes P0300 through P0306 and inspect the coils and spark plugs. If
upon inspection of the coils, a white chalk like build-up on the inside and/or
outside of the spark plug boots is detected, the coils have been damaged
and must be replaced—NAPA Echlin hi-quality IC414 coils should be installed.
It is also advised that the spark plugs be replaced.
The Remedy
Water can seep past the engine cam cover
and collect below the coils in the spark
plug wells of the cylinder head resulting
in a possible misfire. To prevent this from
reoccurring, the AIP seal must be replaced
with a replacement seal that redirects the
water away from the engine cam coverer.
IC414
Vehicles Involved
4.2 Inline 6 cylinder LL8 Engine
(VIN code S – PRO LL8)
2004-2007 Buick Rainier
2002-2007 Chevrolet TrailBlazer
2002-2007 GMC Envoy
2002-2004 Oldsmobile Bravada
2005-2007 Saab 9-7X
source: http://www.napaechlin.com/upload/NAP...reCoilFail.pdf
Coils and Water Don't Mix!
On some GM models, water intrusion
will causes premature failure of the coil
and spark plugs—it's not a coil problem!
Signs of Premature Failure
If a customer complains of a rough idle
and/or the MIL/SES light flashes on
after a rain shower or carwash, this may
indicate
water
intrusion.
Check for
possible DTC
codes P0300 through P0306 and inspect the coils and spark plugs. If
upon inspection of the coils, a white chalk like build-up on the inside and/or
outside of the spark plug boots is detected, the coils have been damaged
and must be replaced—NAPA Echlin hi-quality IC414 coils should be installed.
It is also advised that the spark plugs be replaced.
The Remedy
Water can seep past the engine cam cover
and collect below the coils in the spark
plug wells of the cylinder head resulting
in a possible misfire. To prevent this from
reoccurring, the AIP seal must be replaced
with a replacement seal that redirects the
water away from the engine cam coverer.
IC414
Vehicles Involved
4.2 Inline 6 cylinder LL8 Engine
(VIN code S – PRO LL8)
2004-2007 Buick Rainier
2002-2007 Chevrolet TrailBlazer
2002-2007 GMC Envoy
2002-2004 Oldsmobile Bravada
2005-2007 Saab 9-7X
source: http://www.napaechlin.com/upload/NAP...reCoilFail.pdf
0 komentar:
Posting Komentar