massive oil leak in 96 chevy blazer, and oil pressure needle drops to zero...

J

JasonL

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...when i hit the brakes...suggestions? i have a massive oil leak in a 96 chevy blazer. i cant find the leak and now the oil pressure needle drops to zero when i hit the brakes, but when i accelerate it rises again. it moves around a little bit as i drive but stays right around the same level. can you please help me out with a few suggestions and a place to start. thanks.
 
Is the oil level dropping rapidly? Check it using the dipstick!
An external leak which causes low oil level in the engine can result in a sudden and catastrophic engine failure!

When you accelerate the engine turns faster which turns the oil pump faster, moving more oil and developing more normal pressure. At idle the slower turning oil pump can not keep up with the flow requirements and the pressure drops to nearly zero.

If it is not visibly leaking externally then there are several possibilities:
Worn Rod or Main Bearings on the crankshaft - most likely.
Worn oil pump. Change it if you replace the bearings.
Worn or damaged components in the valve rocker department.
A blown head gasket at the oil pressure gallery.
A crack in a head or the block allowing oil to escape from a pressure gallery - extremely rare.
 
Yes, start by taking it off the road and controlling the massive leak. The oil you are is leaking in not only bad for the environment but it also creates a hazard on the road. Other than that i think your oil pump is going bad if the leak is so bad the pressure can't be maintained.
 
Is the oil level dropping rapidly? Check it using the dipstick!
An external leak which causes low oil level in the engine can result in a sudden and catastrophic engine failure!

When you accelerate the engine turns faster which turns the oil pump faster, moving more oil and developing more normal pressure. At idle the slower turning oil pump can not keep up with the flow requirements and the pressure drops to nearly zero.

If it is not visibly leaking externally then there are several possibilities:
Worn Rod or Main Bearings on the crankshaft - most likely.
Worn oil pump. Change it if you replace the bearings.
Worn or damaged components in the valve rocker department.
A blown head gasket at the oil pressure gallery.
A crack in a head or the block allowing oil to escape from a pressure gallery - extremely rare.
 
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