Boat Repair Questions? Ask a Marine Mechanic for Answers ASAP
does the engine block can be so rust by salt water that the block leak in my oil pan do you ever see it because engine run good so i will do the test you ask but ???
Hi my name isXXXXX will assist you.
These engines will get an internal leak due to salt water corrosion. I know that engine rebuilders will not rebuild a engine that has been exposed to salt water due to the amount of metal lost from salt water corrosion. Since the water is getting in to the oil it is most likely a crack or the block has rusted through due to salt water corrosion. If you are not getting water in to the cylinders this also points to the engine block being cracked or rusted through. Are you getting water in any of the cylinders?
i will do pressure test in my cylinders so if i dont find nothing you sugges to replace the engine ? like i ask before you dont expect probleme whit maniphold ?
so if i have leak at maniphold engine can suck water and this water get in the oil by ring and pistons is that what you said ? SO I shoud try know good manipholds before replace the complete engine because if probleme is with manipholds i will still be in trouble even if i change complete engine
first i am french canadian so i speak english maybe as good as you speak french it may be why it hard to comuniquate . yes i replace elbows maniphold and gasket and i even reface in machine shop the maniphold but i did not do pressure test on maniphold i was only wondering if water can get to engine by manipold by the way it is not the first time i use the service and i never give bab rating to a thecnicien
OK I understand now I will try to be clear as I can. Your English is allot better than my French as I don't speak any French. My apologies.
Their are 3 manifolds on the engine 2 exhaust manifolds and one intake manifold. If the exhaust manifolds get holes in them you will get water in the cylinders. Thats why I ask if you have water in the cylinders? Now if the intake manifold leaks it will leak into the oil not the cylinders. Now if you have no water in the cylinders you have a bad intake or cracked block. If you have water in the cylinders you have bad manifolds or a bad cylinder head or blown head gasket. If you do a pressure test on the cylinders and they check good that leaves the exhaust manifolds, intake manifold or a cracked block. There is no pressure test you can perform on the intake or the exhaust manifolds only a visual inspection. If you have to replace the engine I would replace the exhaust manifolds and risers anyway on a new engine. So check for water in the cylinders. If no water in the cylinders you have a bad intake or a cracked engine block. This is the easiest to do just remove the spark plugs check for water.
Your welcome...........Post back with questions if you run into an issue along the way.
Thank you in advance.......Tan
ok i took the boat off water and i change oil and fiter then i put air in cylinder and there no leak , plus compressure test is ok then i start engine on my drive way i let it run at differente speed betwene idle and 4500 rpm for one houre
and no water get in to the engine so i desceded to put baot in water again i drove it fo 10 minutes and water still get in oil i dont understand can it be about maniphold traps ?