Mercruiser white smoke

In an outboar though, it may mean something other than a tow to shore and an expensive repair. What could cause white smoke , other than a bad head gasket. I did a valve job on a friends boat.

Sent heads out to machine shop. After completion engines ran fine. Several months later one engine started blowing white smoke. Since this is a boat and marine diesel forum, an white smoke seems to come with the territory, I’ll first start by giving you about twenty years of personal experience with white smoke. Thought it might be a head gasket, but the oil is fine and the coolant levels are fine.

Re: White Smoke out the exhaust One thing you DO NOT want, is water in the fuel system of an EFI engine. That is a very expensive proposition if you have to replace injectors and and other parts damaged by rust and water. Mercruiser smokes when first started 1. VEngine Bad Boat Purchase - Duration: 4:24. My question is could this be just normal, the white smoke comes a few minutes after startup and continues at any rpm except a few seconds after i bring her down. To be more specific, the white smoke you see is your diesel fuel, unburne or only partially burned.

The commonest reasons for this lie in the fuel system. They range from faulty fuel injectors to retarded fuel injectio n timing, or even low compression. If, however, a preheat device such as glow plugs or an air-intake heater are malfunctioning, the production of white smoke may be excessive and longer lasting. Then you should go over everything you did.

Try and remember any occurrence of pulling the wrong cable or pushing or pulling something inadvertently while doing the maint. AM Following up from my bayliner 2topic I viewed the boat yesterday and is been lying for years winterised with fresh oil in it. Twice this fellow has referred to white smoke and white cloud. Sounds like a blown head gasket to me. If it were me, I dont think I would worry too much about it just yet.

Normally, white smoke that disipates quickly is usually steam, white smoke that lingers is usually oil, and grey to black is usually rich or lower octane fuel. Steam appears as billowy white smoke that disappears and has low odor. If the white smoke has a strong fuel smell it might be excess fuel burning and not really steam. Steam is usually noticed on boats that have direct exhaust.

Boats with through-prop exhaust can steam too but it would only be evident if the boat were not in the water. When white smoke is spewing from your exhaust, it is usually an indication that something is burning. The typical culprit is a burning fluid from the vehicle, but other causes are possible. A backyard mechanic can diagnose the problem by observing and smelling the smoke. If the smoke decreases when the engine warms up, this may.

They smoked on start-up and for minutes after until broker shut them off. He says its normal for the Cummins mechanical diesels to emit white smoke until well warmed up. Is this true with your experience?

It is reliable and usually the annual maintenance performed during winter layup will prevent overheating problems. L mercury - smoke out of the vent tube. I would expect alot of smoke from the breather until the motor breaks itself back in.

Put the end of the tube in a. Doing a pressure test on the cooling system with the spark plugs out will let you know for sure if coolant is entering the cylinders. White smoke is caused by coolant entering the cylinder. Ok, before I order a couple of new air filters for my BTA 5. I have in my cart, I would very much appreciate any info on whether if there may be another related issue to my engines (black) smoking a bit- at all speeds including idle.