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Huge oil leak 43L

C

captain hook

Guest
"Recently I took the boat out,

"Recently I took the boat out, Checked the oil before I left and itwas full. About ten minutes into the ride I noticed the oil pressure was dropping. Shut down the engine, popped the hatch, and there was oil splattered everywhere! Where would be a good place to start looking for this type of leak. I had to get towed back as there was almost no oil left! Where could such a huge leak be coming from?!?"
 
"Clean it off and start it aga

"Clean it off and start it again but no higher than idle. If it was everywhere, it must have been slung by something, like the crank pulley(s). This could be a bad timing cover gasket. If you have a definite line near the pulley, look there as a start. You'll still need to clean it. If it came from the valve covers, you have more problems that just a leak if it got all over everything."
 
"It did have a leak on the tim

"It did have a leak on the timing cover gasket, but i replaced the entire problem and that stopped the leak. I noticed some oil leaking down by the oil filter, but it's not coming from the filter itself. My worst fear is the rear main seal went bad, but would that cause oil to be slung everywhere?"
 
I changed an oil filter on a c

I changed an oil filter on a car one time and the old gasket ring never came off and I didn't realize it until I was backing out of the shop and a stream of oil was following me. It had half way come off but was still hanging on which caused a huge leak obviously.
 
"If your rear seal has gone th

"If your rear seal has gone that would let oil run onto the flywheel which would then sling it out the coupler opening at the back and bottom of the bellhousing.
But to loose 2-3 quarts in 10 minutes sounds like a lot more than a leak. I suspect it is being pumped out. As Jim said, you need to clean it thoroughly with something like a pressure washer and detergent, then run it at idle and get down there and see where it is coming from.
I wonder if you have a crack or split in the oilpan, or a section of oilpan gasket blown out. Maybe check your crankcase PCV hose to your flame arrestor to make sure it is not blocked. If blocked your crankcase will pressure up and blow oil out the seals.
Rod"
 
"Capt. Hook:

As Rod said

"Capt. Hook:

As Rod said about the plugged PCV valve and/or hose, I have seen the oil blow right out of the dipstick due to the crankcase pressure buildup from a plugged PCV valve.

If you don't have a pressure washer, get a couple of cans of GUNK engine cleaning foam and use as directed. DISCONNECT YOUR BATTERY GROUND FIRST. BE CAREFUL NOT TO DROWN THE ALTERNATOR. Take your brass nozzle on a garden hose and set it on a fine hard fan spray with a low volume of water to rinse off the crud. DRY THE ENGINE WITH COMPRESSED AIR OR THE EXHAUST FROM A POWER SHOP VACUUM.

Guy"
 
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