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Water in engine
Bones 
 		  Home: Lansing , MI   11/13/2005 16:35
Alewives
Posts: 2
 

Honda cat was wondering if maybe you could help me out? My 1st time out this year had water in engine my friend winterized it last year and stored it for me Before I Got it out for the year he changed the oil for me He said it started right up for him when he went to check oil pressure We got it to the water it wouldnt roll Vapor locked Took it home changed the oil as there was water in oil Ran it all year long no probelms till end of august when we had to pull plugs and drain block again No water in the oil the 2nd 2 times this happen We compression tested all 6 valves they looked all good Took off exhaust manifolds and water jackets they came back ok any ideas here We ran it all summer long never ran hot missed or anything like that Curious as to what you might think could be wrong Water was in different valves on different sides of the block please help if you can it is a chevy 4.3 engine
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Re:Water in engine
hondacat 
 		    11/13/2005 21:15
Moderator
Posts: 664
 

whole bunch of questions come to mind .
>how did your friend winterize
>is it a late model 4.3 that has the intercooled intake manifold? (these have a extra drain low on the fromt of the intake manifold ) was this drain neglected or anti freeze not run through the motor
if each time you are geting water in a diferent cylinder its probably the intake manifold or exhaust manifold . if the exhaust manifolds where properly presure tested they are safely eliminated from the diagnostic procedure .
best guess at this point with the information you have given "cracked intake mainfold"
any way you look at it the motor has to come apart the heads have to come off and the intake manifold and heads have to be checked before you ruin the rest of the motor .
some boats this can be done in the boat in most cases we pull the motor and do it on a test stand then run and test before reinstalling .
sorry to be the bearer of bad news but the boat will leave you stranded some day if you dont get her fixed .
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Re:Water in engine
Bones 
 		  Home: Lansing , MI   11/14/2005 21:34
Alewives
Posts: 2
 

Honda cat it is a 1995 4.3 Exhaust manifolds were pressure tested and came back fine My buddy who winterized it has the same boat though his is an 86 I will have to ask again but im fairly certain he ran antifreeze through it when he winterized it Would his boat have the extra drain plug ? Or just mine I suppose if mine did and his didnt hec ould have meiised it But wouldnt running antifreeze through it take care of that Thanks you have been a great help My uncle who is a mechanic retired and is now working at a marina Does not have alot of experience with Marine engines But id learning fast he also thought it could have been an intake manifold Thanks again I will keep you posted My boat is carbuerator not fuel injection My uncle is going to see if it has the intercooled intake manifold by any chance do you know off the top of your head Thanks so much for everything Bones
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