trying to help a friend milky oil

[bolo789]

hello everyone, my friend have a 1983 searay 210 fisherman with a 350 chevy engine serial # B552378 alpha one drive,<br /><br />well last week we went fishing during fishing at one time we try to restart the engine almst like locked up anyway we got it start and back to the dock five days later he try to start but it broke the face off the starter.<br />got the starter rebuild, turn over the engine by the flywheel it turn so we install the starter. try start with keys and it jam a little but start and run fine. now back to the fishing ground sat and the engine start making rattle noise like bering going bad limp back to the dock , pull dipstick and wow milkshake oil. pull manifold and risers took out all the plugs and crank engine tons of water coming from number 8 cilinder crank and crank it seems as if it would not stop, but it did. spray wd40 and mystry oil in cilinders and leave it. <br /><br />so what you guys think<br /><br />head gasket, manifold, or risers ?? <br /><br />thanks for any help <br />he order new manifolds the risers is about two years olds

 

[TilliamWe]

Re: trying to help a friend milky oil

in my opinion, always always always check the manifolds first! Since the risers are bolted to them, check them at the same time. Also, make sure if there are supposed to be shutters in the exhaust, that they are still there & working properly

 

[bolo789]

Re: trying to help a friend milky oil

oh oh there are no shutters in there they both missing only the pins leave there. thanks for the quick comeback

 

[TilliamWe]

Re: trying to help a friend milky oil

I would say that you should replace the shutters then. Especially if the they are the ones on the top of the y-pipe & easy to get to.

 

[rbezdon]

Re: trying to help a friend milky oil

The old ones are likely stuck in the bottom of the y pipe blocking exhaust (and water) from leaving the drive. This will kill engine performance and eventually cause overheating or possibly a blown head gasket. Pull the drive and get the old ones out of there.

 

[bolo789]

Re: trying to help a friend milky oil

i have a good look at the manifold but they both look great risers runs only warm. all off the water was in the number 8 cilinder should we pull the head of or change the manifold and crank her up??

 

[steve n carol]

Re: trying to help a friend milky oil

w/o the exhaust riser, perform compression and leakdown tests, ( to check for cracked head/piston/rings), to varify the exhaust manifolds condition.<br />Q) did you test the manifold/s and risers?...sl

 

[bolo789]

Re: trying to help a friend milky oil

we will do a compression but dont know how to do a leak down test dont have the air tool ect. thanks for the info

 

[bolo789]

Re: trying to help a friend milky oil

update well i help my friend pull of the head today, result head gasket is good,<br /><br />the intake bolts was all loose could that be the problem???<br />i notice in the intake, exhaust port for number 8 cilinder has sighn of salt water rust only exhaust sopose to come through those ports.<br /><br />i am trying to tell my friend to change the exhaust manifold but he let people keep telling him the manifold look great, i at least tell him to put a new one on the trouble side for now if he caunt buy the pair right now <br /><br /><br />any thought

 

[bolo789]

Re: trying to help a friend milky oil

as i said only the number 8 cilinder has oil in it the rest look great

 

[TilliamWe]

Re: trying to help a friend milky oil

I am no Merc mechanic, but the manifold is the problem. It don't get much more clear than that. Yes, this is an "I told you so"!<br /><br />I hope he's paying you well, to do all this extra work!<br /><br />So the manifold "looks" good, that's fine. How about having it tested?? It had to come off first in order to remove the head, so it's still off right? Take it to someone that knows what they are doing, and have it checked.

 

[RandyJ]

Re: trying to help a friend milky oil

If you have the manifold off...rig a hose pipe to one end and block the other even if you just hold your hand over it. If you see water squirting down into the intake or exhaust ports you know the jacket is cracked on the inside and not visible from the outside. If you can't get it to hold pressure pull the risers off and block the passages with metal strips or rubber like from an inner tube and hold down with riser bolted on then re-try the hose pipe trick to check for leaks.... exactly how I found my cracked manifold and solved my #8 cylinder full of water problem... I also was able to see a crack in the head next to the #6 exhaust valve...apparently common problem caused by rust breaking loose and clogging cooling system and a very good reason to have an over heat warning horn on your boat. I believe my cracked manifold was the result of the previous owner cranking the boat immediately after an overheat and seizure. Cold water on hot cast iron will crak the bejeegers out of it.