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Blown head gasket or what...?
Rod, there is a little more as to this engine history than I initially
included. I did not want to overcomplicate the picture. Please see my other response and state what you think. It is a problem of compression test results vs all other indications that makes me wonder. I appreciate any input. "Rod McInnis" wrote in message ... "Proxy" wrote in message able.rogers.com... Hi All, I own a Bayliner with a V8 OMC 5L engine. I noticed, when running the engine with hose attached, that the exhaust fumes contain quite a lot of steam. That is not unusual or unexpected. PS. the engine starts and runs OK, just like nothing happened. I think that you may be concerned over nothing. Steam coming from the exhaust is not unusual. The combustion of gasoline produces a lot of water vapor. On a car the exhaust is usually so hot that the water comes out in the form of superheated steam and you don't see it. An exception is right after you start and the exhaust pipe is still cold. On your boat, the water cooling of the exhaust cools it down enough that the superheated steam cools to become saturated steam and then you see it. In addition, the water is cooling very hot exhaust manifolds and even more steam is generated. When you run the boat on the lake the saturated steam enters the water, cools and condenses so that you don't see it while idling. Your compression results are high enough that I can assure you that you don't have a blown head gasket. Based on what you have described I don't see any indication of there being a problem. Put your boat back together and go boating! Rod |
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