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Old 02-26-2010, 07:13 PM   #1
ager803
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'02 ram 3.7L issues

working on a ram 3.7 with 120,000 miles on it, has a bad misfire and pocket scanner gave me a p0306 code (#6 cyl. misfire) . replaced plugs and coil but still no remedy. checked compression and gave me a low reading compared to the other 5 cylinders. they read at 150 psi and the #6 read at 80-90 psi.
anybody else have this problem? and will i have to replace the piston rings at my cost or is there a TSB or recall or something about this.
this truck has low miles IMO for this to happen.any help or advice
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Old 02-27-2010, 04:54 PM   #2
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Re: '02 ram 3.7L issues

Is there exhaust smoke?
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Old 03-01-2010, 07:18 AM   #3
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Re: '02 ram 3.7L issues

it is most likely not the rings, but is probable a burnt valve. was the truck "short tripped" and did the owner use cheap gas with the epa minimum detergent?
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