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justin2
New User
Apr 29, 2014, 1:51 PM
Post #1 of 9
(1997 views)
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3.7L V6 Knocking Sound
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My 2006 Jeep Commander is making a loud knock. Ran it for about 3 days with little to no oil. We've changed the oil. Flushed out the engine. The old oil looked like metallic paint...not good. The knocking is very bad and I think it might be a rod bearing but I don't know much about engines. Please help!!
Here's a video of it. http://m.youtube.com/watch?v=w6vpAGVDrjQ&list=WLJ1-qV8OrfELVZdlSDexwrw
(This post was edited by justin2 on Apr 29, 2014, 3:22 PM)
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Hammer Time
Ultimate Carjunky
/ Moderator
Apr 29, 2014, 2:16 PM
Post #2 of 9
(1989 views)
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Re: 3.7L V6 Knocking Sound
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Your motor is toast and it's time to look for a new one. This time keep it full of oil.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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Discretesignals
Ultimate Carjunky
/ Moderator
Apr 29, 2014, 2:51 PM
Post #3 of 9
(1981 views)
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Re: 3.7L V6 Knocking Sound
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Your video is private. Can't view it.
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
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justin2
New User
Apr 29, 2014, 3:23 PM
Post #4 of 9
(1977 views)
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Re: 3.7L V6 Knocking Sound
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Fixed it.
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Discretesignals
Ultimate Carjunky
/ Moderator
Apr 29, 2014, 3:32 PM
Post #5 of 9
(1974 views)
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Re: 3.7L V6 Knocking Sound
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Rod knock.
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
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justin2
New User
Apr 29, 2014, 3:43 PM
Post #6 of 9
(1972 views)
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Re: 3.7L V6 Knocking Sound
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Is that fixable?
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Discretesignals
Ultimate Carjunky
/ Moderator
Apr 29, 2014, 3:56 PM
Post #7 of 9
(1966 views)
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Re: 3.7L V6 Knocking Sound
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Honestly, after removing and dismantling the engine, machining the damaged crank, replacing the damaged rod, and cleaning the entire engine out from all the metal that was circulating in it, it just isn't worth it.
It is also possible there could be damage to other bearings and sliding surfaces in the engine from the lack of oil problem you had.
If it was some rare engine, rebuilding would be the right choice. Since they are plentiful, it just isn't worth repairing in my opinion.
It would be better for you to source a good used low mileage salvage yard engine that was in a vehicle the same year that was wrecked. Make sure the salvage yard has some type of warranty on their engines.
If you have your mechanic do the job, let them source an engine for you, so the labor is covered under their warranty also. Our shop has had pretty good luck with salvage yard engines.
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
(This post was edited by Discretesignals on Apr 29, 2014, 3:58 PM)
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justin2
New User
Apr 29, 2014, 4:15 PM
Post #8 of 9
(1961 views)
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Re: 3.7L V6 Knocking Sound
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I figured it would need a new engine anyways... :( Oh well. Thank you for your time and advice.
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Discretesignals
Ultimate Carjunky
/ Moderator
Apr 30, 2014, 12:13 AM
Post #9 of 9
(1942 views)
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Re: 3.7L V6 Knocking Sound
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Good luck with that and hope you get your issue resolved without too much heartache.
Closed as OP's question was answered.
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
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