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| 2000 7.4 454 cu MerCruiser Engine |
| Author |
Message |
    
Anthony Carnicelli
New member
Username: deejai
Post Number: 1
Registered: 02-2008
| | Posted on Thursday, February 07, 2008 - 07:28 pm: | 
|
My oil pressure droped down to 25- 30 lbs from 55 lbs on a trip , i check the oil level and it was good . when i got into port i noticed a milky oil in the crank case but the oil level was still good . I have 2 engines so i swapped gauges and senders and the pressure was stiil low , i tried a mechnical gauge and it to showed low . Engine rund fine no lifter noise , colud it be a bearing with that little water or a oil pump ?? |
Rick Sweeten
Senior Member
Username: linesix
Post Number: 1048
Registered: 11-2002
| | Posted on Thursday, February 07, 2008 - 09:14 pm: |
|
I would suspect the contaminated oil is affecting the pressure. I would flush it out, install fresh oil and filter and run it again. First confirm there is no damage, then locate and correct the source of the water. |
Anthony Carnicelli
New member
Username: deejai
Post Number: 2
Registered: 02-2008
| | Posted on Friday, February 08, 2008 - 10:01 am: |
|
Sorry i didn't mention i changed the manifolds and
flushed out the oil and changed the oil filter . I
was just wondering would it be more likely to be the oil pump rather than a bearing with that little water in the crankcase , it sounds and runs fine . |
Bondo
Advanced Member
Username: bondo
Post Number: 771
Registered: 12-2006
| | Posted on Thursday, February 14, 2008 - 07:09 am: |
|
"was just wondering would it be more likely to be the oil pump rather than a bearing with that little water in the crankcase ,"
Ayuh,....... It could be Either, or Both.....
As long as you're showing 10psi. per 1000rpms,.....
You're good to Go.... |
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