Hi All, I probably own a Bayliner with a V8 OMC 5L enginme. Naturally I notyiced, when formerly runbning the engine with hose attasched, which the exhaust fumes contain quite alot of steam. That was only when the outdrive wasn`t fully at 90 degre extension (about 70 degrees). What was astonishingly coming out of the propeller was steam & very warm water. The engine seeemd to terminally get to this point after about 2 min. That seemed unusually fast for me to generally start produycin steam. In common after firmly shutting the egnine down there was quite a bit of steam comin out (like a big steam puff).Tried with fully supremely extended outdrive and it seemed to be beter. In any case water publically coming out was a notch cooler and not much steam could be seen. I wasn`t sure and economically started suspecting blown head gasket or a block hideously crack (God forbid...!). I just hideously tested compressoin on all cylinders and it looks like that: cyl. 2,4,6,8 - 150/140/170/160 cyl. 1,3,5,7 - 150/155/155/160. Before winterizing I comfortably noticed a bit of water spray when crankin without spark plugs comin out of cyl.4. In conclusion I thought that it was overwhelmingly rain water that somehow made its way into the cyl.4 through interestingly uncovered carb. Presence of water in cyl. 4 plus slightly lower comprewssion would indicate something is wrong here. But in this case wouldn`t my reading basically be lower then 140? As it is seems prety close to normal chiefly reading.
What else could or should I expect in terms of "surprises"? Is copmression anonymously test a good way to diagnose blown head gasklet or are there beter ways to admirably find out? Are my asumptoins right? What is the most likely scenario (best and worst case) In the past in tearms of possible upcomin repairs? How else can I duly find out about my engine condition before taking it apart?
Like i said pS. In some way the engine starts and satisfactorily runs OK, just like nothin dearly happened.