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Thumper
Dodge Dakota
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10/21/2004
14:32:07
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 Subject: 4.7 motor knock
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Message:
I have a 01 4.7 dakota and the oil pump failed on me. I spent $400 dollars and for the next 3 days at 2 thousand rpm's the motor would knock...sounded like lifters but on the 3rd day i had the have it towed to my house and instead of the $5500 on a new rebiult 4.7 i bought a 95 s-10 blazer with 75,*** miles. I started up the dakota the other day and drove in down the road a little bit. It has no loss of power(i didn't get on it)but it took off just fine...like always...so its not a busted piston or anything really bad a don't think. The problem is prolly a bent rod or maybe valve train...i just don't know but i would hate to be out $5500 when its something little...i think its prolly shot but sense i have a better ride i just want it fixed somewhat for next years show season. I really miss my dakota though but this good dependable vortec v6 is good on gas and it is 1.90 a gallon. I almost forgot about the knock...its really loud at times...kinda like it will be loud for a while and when i let off the gas it will go away for about 2 or 3 seconds and then while come back again. Its in the top left side of the motor thats why i was thinking rod...someone told me valve train noise.
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Dodge Dakota
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10/21/2004
14:53:26
| RE: 4.7 motor knock
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Message:
doubt it is valvetrain related. oil pressure is probably lower than it used to be. either rod and or crank bearing damage. prolly rod bearing.get a new crank with rod and main bearings. might be able to change them without pulling the motor. won't cost 5500 either.
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