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Grey engine oil eh700t-gctid811990
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"RDOIII" post=812024 wrote:
Suggest you do some real diagnosis as suggested.
There is an oil cooler that could have leak among may other things
Might be good idea to hire a mechanic on this one.
But as a yard manager once said - "start with the simple - we can always move on to the difficult later"
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I have the same problem but you need to do compression test first. If it's good then you need.to look at exhaust manifolds. Losing coolant can also be heat exchanger or oil cooler. Head gasket is worse case. Don't go there until you know exactly what the problem is. Otherwise you could put it back together and still have the same problem.
If you have trouble finding parts under the US marine power name those were really made by chris craft there is a guy back east that sells all the parts for those.
Here is the link
http://www.chris-craft-parts.com
1989 Avanti 3450 Sunbridge
twin 454's
MV Mar-Y-Sol
1979 Bayliner Conquest 3150 hardtop ocean express.
Twin chevy 350's inboard
Ben- Jamin
spokane Washington
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I have the same problem but you need to do compression test first. If it's good then you need.to look at exhaust manifolds. Losing coolant can also be heat exchanger or oil cooler. Head gasket is worse case. Don't go there until you know exactly what the problem is. Otherwise you could put it back together and still have the same problem.
1989 Avanti 3450 Sunbridge
twin 454's
MV Mar-Y-Sol
1979 Bayliner Conquest 3150 hardtop ocean express.
Twin chevy 350's inboard
Ben- Jamin
spokane Washington
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"1thefox1" post=812030 wrote:
"RDOIII" post=812024 wrote:
Suggest you do some real diagnosis as suggested.
There is an oil cooler that could have leak among may other things
Might be good idea to hire a mechanic on this one.
But as a yard manager once said - "start with the simple - we can always move on to the difficult later"
https://www.marinepartssupply.com/ In BC Canada Hino parts distributor
North Harbor Diesel is also good source - all though last month I called twice and left message and never got a call back but have had good service in the past
RDOII
https://www.marinepartssupply.com/
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"RDOIII" post=812139 wrote:
"1thefox1" post=812030 wrote:
"RDOIII" post=812024 wrote:
Suggest you do some real diagnosis as suggested.
There is an oil cooler that could have leak among may other things
Might be good idea to hire a mechanic on this one.
But as a yard manager once said - "start with the simple - we can always move on to the difficult later"
https://www.marinepartssupply.com/ In BC Canada Hino parts distributor
North Harbor Diesel is also good source - all though last month I called twice and left message and never got a call back but have had good service in the past
RDOII
https://www.marinepartssupply.com/
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"1thefox1" post=812276 wrote:
"RDOIII" post=812139 wrote:
"1thefox1" post=812030 wrote:
"RDOIII" post=812024 wrote:
Suggest you do some real diagnosis as suggested.
There is an oil cooler that could have leak among may other things
Might be good idea to hire a mechanic on this one.
But as a yard manager once said - "start with the simple - we can always move on to the difficult later"
https://www.marinepartssupply.com/ In BC Canada Hino parts distributor
North Harbor Diesel is also good source - all though last month I called twice and left message and never got a call back but have had good service in the past
RDOII
https://www.marinepartssupply.com/
Started boating 1965
Bayliners owned: 26 Victoria, 28 Bounty, 32, 38, and 47 since 1996
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Well after looking at it my mechanic was no longer sure it was the head gasket (the oil residue in the top end looked fine). So he decided to remove the oil cooler to have a presure test. All the bolts were stuck and took almost 10 hours to remove it!! Will find out Monday morning after the rad place does the presure test on it (they all close at noon at Friday!)
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Just got a call from the radiator place and they say the cooler does not leak. After removing the valve cover my mechanic no longer thinks it the head gasket and now after removing the cooler it's looks like that is not the problem. The guy at the radiator place said it could be condensation that changed the color of the oil. I have a hard time with that remark considering the amount of oil there is in the engine. It would of needed a lot of condensation to change the color. Last year I had to add more than a couple of gallons of coolant to the engine (100 hours of use), but it did not appear in the engine oil. Someone else mentioned that part could be a coolant leak in the manifold getting mixed with sea water. Here is a pick of the engine with the valve cover removed.
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"Last year I had to add more than a couple of gallons of coolant to the engine (100 hours of use"
Have you pressure tested the coolant system to rule that possibility out entirely?
Do you have any sort of 'heater' plumbed into that engine? (water heater or space heater)
"Someone else mentioned that part could be a coolant leak in the manifold getting mixed with sea water."
Have you inspected the riser and turbo turbine wheel on that engine to rule out raw water running back to an exhaust valve?
How old is the riser on that engine?
Northport NY
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