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5.7 water in the oil...

R

reckincrue

New member
Hello guys.

I hate to be the brand new guy with his 1st post asking for advice, but yeah..... here I am, hat in hand.


I have a 5.7 in my 97 Celebrity. I had to rebuild the heads last year due to a loose spark plug (botched tune-up job) that ran lean and broke a valve. I took the heads in and had them rebuilt by a professional but I did the R&R myself.

Ran the boat a few times last year and everything was fine. Winterized the boat as I always have (owned the boat about 6 years) ran a partial can of Sea-Foam through her, checked lower unit fluid, changed engine oil and ran antifreeze through the system using a funnel hooked to the lower unit.

Before going to the lake, charged the battery and she started right up and ran like a champ in my driveway.

Took her to the lake this weekend and she started up a little hard, idled low but seemed to run ok otherwise. A bit gutless when we first got moving, died at idle a couple of times, hard to restart. After a couple of minutes I rode back by the dock to pick up the rest of the family and shut it down. When I restared it I heard a liquid-spattering noise from the engine compartment. Opened the case to see milk-shake all over the top of the manifold.

I know now that I should have had a qualified pro winterize it in a tank, as the thermostat probably never opened and allowed antifreeze into the block when I was winterizing.

I figure I have either a cracked block or a bad headgasket (Maybe I did something wrong when I replaced the heads??).

How do I pressurize the block to see if it is cracked?

Or should I start by compression or leak-down testing the cylinders to see if it is a bad head-gasket first?

Thanks in advance for your advice.


John
 
Last edited:
"Ran the boat a few times last year and everything was fine. Winterized the boat as I always have (owned the boat about 6 years) ran a partial can of Sea-Foam through her, checked lower unit fluid, changed engine oil and ran antifreeze through the system using a funnel hooked to the lower unit.

Before going to the lake, charged the battery and she started right up and ran like a champ in my driveway.

Took her to the lake this weekend and she started up a little hard, idled low but seemed to run ok otherwise. A bit gutless "


""Ran the boat a few times last year and everything was fine. Winterized the boat as I always have (owned the boat about 6 years) ran a partial can of Sea-Foam through her, checked lower unit fluid, changed engine oil and ran antifreeze through the system using a funnel hooked to the lower unit.

See nothing about draining everything first ,never winterized, something got cracked from a freeze.

"Before going to the lake, charged the battery and she started right up and ran like a champ in my driveway."

It would with a cracked manifold and block, I`m guessing you ran it for no more than 10 minutes.just enough to start mixing it up.

"Took her to the lake this weekend and she started up a little hard, idled low but seemed to run ok otherwise. A bit gutless "


Nothing about checking the oil level and condition, some water was introduced at original spring start and the initial run made it really come to life.Block and manifolds likely cracked.
try looking just under the head joint on the block for a bulge or rust stains.

Can try pressurizing the block with air.
Drain as much out of the pan as possable
Remove the plugs, hook a hose to the therm housing and turn on water.
look for a rising dipstick level or water from the sparkplugs
 
Bt Doctur said:
"Ran the boat a few times last year and everything was fine. Winterized the boat as I always have (owned the boat about 6 years) ran a partial can of Sea-Foam through her, checked lower unit fluid, changed engine oil and ran antifreeze through the system using a funnel hooked to the lower unit.

Before going to the lake, charged the battery and she started right up and ran like a champ in my driveway.

Took her to the lake this weekend and she started up a little hard, idled low but seemed to run ok otherwise. A bit gutless "


""Ran the boat a few times last year and everything was fine. Winterized the boat as I always have (owned the boat about 6 years) ran a partial can of Sea-Foam through her, checked lower unit fluid, changed engine oil and ran antifreeze through the system using a funnel hooked to the lower unit.

See nothing about draining everything first ,never winterized, something got cracked from a freeze.

"Before going to the lake, charged the battery and she started right up and ran like a champ in my driveway."

It would with a cracked manifold and block, I`m guessing you ran it for no more than 10 minutes.just enough to start mixing it up.

"Took her to the lake this weekend and she started up a little hard, idled low but seemed to run ok otherwise. A bit gutless "


Nothing about checking the oil level and condition, some water was introduced at original spring start and the initial run made it really come to life.Block and manifolds likely cracked.
try looking just under the head joint on the block for a bulge or rust stains.

Can try pressurizing the block with air.
Drain as much out of the pan as possable
Remove the plugs, hook a hose to the therm housing and turn on water.
look for a rising dipstick level or water from the sparkplugs
Click to expand...

I did check oil both before and after initial startup. You are correct that I did not run for more than perhaps 10 mins in the driveway.

I did check oil for level and condition prior to launching and it was new and clean still. Perhaps I didnt run it long enough to open a thermostat? If this is the case it would explain why no milky oil until it warmed up...

I do undertsand that this is a problem completely of my own making. I should have taken it in and had it winterized by a pro.

I do appreciate your help.


John
 
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