Re: water in the oil
 

If compression bad...go bracket, young Man...go bracket ;) ...

Re: water in the oil
 

IT'S VERY SIMPLE, EVERY YEAR BEFORE SUMMER YOU HAVE TO OPEN THE RAISERS, CLEAN THEM WITH MURIATIC ACID AND A WIRE BRUSH, (AFTER THAT MAKE SURE YOU SUMERGE THEM IN WATER WITH BAKING SODA AT LEAST FOR A DAY TO NEUTRALIZE THE ACID)
AND ALSO STARTING THE ENGINE OFTEN ALSO HELPS TO KEEP THE MANIFOLDS FULL OF WATER, THUS RETARDING THE OXIDATION, ONCE THE'RE DRY PROBLEMS WILL STAR.
MANIFOLDS SHOULD ALSO BE CLEANED EVERY TWO YEARS OR SO.

LESTERUS

Re: water in the oil
 

Everyone has good suggestions:

I checked the compression when all this started and it was good. I probably should do a pressure test on the last unchanged manifold.

I flushed the motor with diesel fuel Saturday and reflushed with 2 qts of oil and then sucked out (pump) the diesel and 2 qts of oil.

I just can't figure out how to check if I have internal leak in the water passages to the oil pan without pulling the mtr and oil pan and look.


Also what the h*ll does I loveya bb- on the left hand side of my posts??

Re: water in the oil
 

I guess you didn't catch it but heres how to pressure test the bloack and check it for leaks...........while you have the hoses off, block them off or hook them back to the thermostat housing to block of any way the water can exit the block, then hook a garden hose to the water inlet at teh thermostat housing, you can get more pressure with a garden hose than you will ever get by running the engine, check the oil level, if you have a leak it will rise, pull the oil fill cap and listen, you may here a hissing noise, pull the plugs out and spin the engine over, look for water coming out of the sparkplug holes, if not your OK, put the engine back together

Re: water in the oil
 

i had an I/O rust thru the intake once and put water in the ooil on the bottom of the intake. i replaced with aftermarket aluminum and never another problem.

Re: water in the oil
 

thanks spare and skool I quess I need to work a little more on checking out the block and exh manifold. I also had thought abt the intake manifold leaking.
lee

Re: water in the oil
 

good one, i forgot about the intake, got my but kicked years ago because of an intake, i swaped out a long block on a freeze busted engine, put it back together with new manifolds and risers, got it all running and it still made milkshake oil, i was in such a hurry i missed the slight crack on the water jacket under the intake, it was hidden by the oil splash shield. It should show up if you presure test the block. I wouldn't use an aftermarket aluminum intake if your going anywhere near salt. The marine aluminum intakes have a bronze liner in the water jacket

Re: water in the oil
 

thanks I just need to fix this, stripper season is here

Re: water in the oil
 

Hey Spares, I run the boat again today and again water in the oil. I kept watch on the oil level and it increased so I pullled the boat up and plugged off everything except the inlet hose from the raw water pump. I plugged my water hose from the house on it and the oil level increased in the pan. I next hope is it's only a intake gasket or intake problem. I guess I'll have to pressure test that as soon as I come back from Seattle WA next week.

Any suggestions from that point.

Re: water in the oil
 

Well guys I found out what my problem is. I took the intake off and with some pvc coupling and a brass fitting I hooked the water hose up to the block and I found the BLOCK was cracked.

Thanks to spareparts & skool.

I had pin holes all down the left side of the motor (bottom of the water jackets from front to back). I picked at them but it doesn't appear to be from rust. It almost seems to be a cast line in the block. I've never seen this before on a block.

Does anyone know if this is a condition that happens to these 305 blocks?