Bilge full of oil

R055

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Jul 13, 2015
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Thanks for the replies, can I run it with muffs to check for leak or does it have to be lake? Nearest lake is pretty long drive for me
Also is it okay to top off with 5w30 car oil for now until I find the leak?
 
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Rick Stephens

Admiral
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Aug 13, 2013
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Shouldn't be a pan rusted, boat is a 2001 V6. Gonna have an aluminum pan on it. More likely to shatter the plastic junk they call a timing cover than rust that pan.
 

wrestling coach

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Jun 27, 2011
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Who changed the oil the last time? Could the oil filter gasket from the previous oil filter got stuck to the block and now a new filter with another gasket applied over the top? In other words you have two oil filter gaskets back to back. Those would leak.
 

H20Rat

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My vote is on the oil filter gasket... If they are installed without coating the new one with oil, the rubber will cement itself to the metal and will often stick on. Easy to screw a new one back on without realizing it.
 

R055

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Hey guys just uploaded 2 new videos to my Google Drive, the oil is coming from under the bottom pulley 😑. dang was really hoping it would have been the oil filter...

What should I do now?
 

fhhuber

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About the only option: fix it yourself or take it to the shop.

I'm not sure on that engine if you have to pull the whole engine out in order to fix that. But if that is what it takes you do it.

Fix it or you'll be checking the gas and filling the oil.
 

R055

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You need to get a better look up behind the pulley, concentrating on were it's coming from instead of were it's dripping off of.

Is there anything else it could be coming out of if it's dripping behind pulley? It's definitely not coming out of anything above the pulley, also it only drips when it runs, can I run the motor without the pulley?
 

wrench 3

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It could be the timing cover it's self, the timing cover seal or the oil pan gasket. You can't run it with the pulley off because it would leave a 1/4" gap between the crankshaft and the seal. However, none of these run under direct oil pressure so for that large of a leak there is a good chance that you could see the cause of the leak if you removed the pulley. Check for a cracked cover, a chunk of rubber missing or a split in the lip of the seal, or the oil pan gasket out of place.
 

R055

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It could be the timing cover it's self, the timing cover seal or the oil pan gasket. You can't run it with the pulley off because it would leave a 1/4" gap between the crankshaft and the seal. However, none of these run under direct oil pressure so for that large of a leak there is a good chance that you could see the cause of the leak if you removed the pulley. Check for a cracked cover, a chunk of rubber missing or a split in the lip of the seal, or the oil pan gasket out of place.

Alright so I can take the bottom pulley off and should see where the leak is without turning the engine on?
 

wrench 3

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No guaranties but as I said, there is a good chance that the "cause" of the leak may be noticeable without it actually leaking at the time.
 

Newbie@boats

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I would remove the crank pully and inspect.

My 3.0L was leaking oil from the timing cover. Easy enough to fix, but I could see if it went unnoticed my bilge would of ended up like yours
 

R055

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I would remove the crank pully and inspect.

My 3.0L was leaking oil from the timing cover. Easy enough to fix, but I could see if it went unnoticed my bilge would of ended up like yours

Did you have to remove the engine to change the timing cover?
 

garbageguy

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Did you have to remove the engine to change the timing cover?


I am in the middle (hopefully end) of a leaking timing chain cover on a new (repower from long block) 5.7 GM motor. Tried to replace/reseal in the boat, no go. Had to pull it and replace again. At this point, think it had to be pulled to get it sealed with the oil pan. Not sure if that's the same with your motor and engine compartment
 

wrench 3

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The book says that you have to remove the oil pan to replace the front cover and for that the engine has to be pulled. However, if you don't have the facilities to remove the engine,you should have a reusable pan gasket. So if you can gain access to the pan bolts,you may be able to lower the front of the pan enough to replace the timing cover with the engine in place.
If you get lucky and it's the seal that's leaking, you can replace that without removing the cover.
 
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