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#2382585 - 10/03/11 10:05 PM Oil pan dented
Baw84 Offline
Member

Registered: 08/03/11
Posts: 205
Loc: Gilberts, il
Ok so have had this knocking noise in my car and have asked two ligit mechanics and one retired works out of his garage mechanic and got different answers from all of them, One said ingnition related , one said timging chains, and one said the oil i was using was too thin..... changed the oil to 1030 no difference, dont think in any way it could be ignition related, i crawled under my car today and while down there noticed that my oil pan has a dent in the very bottom of it maybe dented about a half inch up, at some point someone hit something, any chance this could cause a noise? though i doubt it... and what else could cause a knock noise from under the car from oil pan area i am kinda doubting its timing chain guides as the noise is not coming from the front of the engine its from under toward the back of the engine???
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#2382588 - 10/03/11 10:12 PM Re: Oil pan dented [Re: Baw84]
Black_Sunshine Offline
Poobah

Registered: 12/09/10
Posts: 9687
Loc: AZ
You've got one problem. You only need one thread.

I doubt the oil pan is your problem. Especially if you didn't just dent it the other day when your problem started. I think that the crank would just bash the pan back down and it wouldn't make a lot of noise.
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#2382592 - 10/03/11 10:19 PM Re: Oil pan dented [Re: Black_Sunshine]
Baw84 Offline
Member

Registered: 08/03/11
Posts: 205
Loc: Gilberts, il
ok ya i know i know shoulda just posted to the other thread...thats a duh on my part nono


disregard this post everyone
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2008 CVPI 133k
Black corner lights, R1 concepts drilled /slotted premium rotors W/ Hawk HPS pads on the front.
nothing else yet...

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#2383060 - 10/04/11 05:10 PM Re: Oil pan dented [Re: Baw84]
PHoganDive Offline
Over the Hill

Registered: 06/11/11
Posts: 3078
Loc: Mass, USA
The oil pickup tube for the oil pump goes right to the bottom the the oil pan. If the bottom of the pan is dented up very much, it could be blocking the oil inlet, and starving the motor of oil. This would result in low oil pressure, which in turn can cause excess wear on parts, especially lower end bearings, which if loose generally make a knock.
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#2383180 - 10/04/11 09:18 PM Re: Oil pan dented [Re: Baw84]
m_j Offline
Member

Registered: 11/06/07
Posts: 216
Loc: BC Canada
that and the crank never gets close to the pan in a full skirt style motor like the 4.6
chances are the pan got dented by a misplaced floor jack (go ahead and ask me how I know) as the crossmember will protect the pan from ever contacting anything
my cars crossmember has large gouges and the body mount bolts are bent back from the abuse of the previous owners, but the pan was fine till I customized it with my floorjack
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#2383182 - 10/04/11 09:22 PM Re: Oil pan dented [Re: Baw84]
GSDNH Offline
Banned
Over the Hill

Registered: 05/14/07
Posts: 2724
Loc: MA
Originally Posted By: Baw84
crawled under my car today and while down there noticed that my oil pan has a dent in the very bottom of it maybe dented about a half inch up, at some point someone hit something, any chance this could cause a noise?


Totally depends on where exactly the dent is.

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#2383183 - 10/04/11 09:23 PM Re: Oil pan dented [Re: m_j]
GSDNH Offline
Banned
Over the Hill

Registered: 05/14/07
Posts: 2724
Loc: MA
Originally Posted By: m_j
that and the crank never gets close to the pan in a full skirt style motor like the 4.6


Maybe where the sump is but it is very close in the front....

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