Why would outboard motor spark plug drip water?

Question

Our local Mercury dealer is hardly open.So I'm asking here.Why would the lower spark plug drip some water?We had it started,then it killed and when plug was taken out some water dripped out.Any ideas? It's a 1980 something Mercury boat motor.

Answer 1

Some mecurys have no heads or head gasket depends hp.If this is the case doa compression test if the compression is the same in all cyc than check the exhaust plates as it could of over heated an water is leaking in the exhaust to the cyc don't let it sit put out boardoil threw it or it will lock up.

Answer 2

those previous merc/mariner water jacket bolts may be bumped off with the skillful use of an acetylene torch. particularly heat temperature and skillful wrenching gets optimal of them on the bench with none breakage. If the possibility seems particularly daunting, you could actually run it that way as long because of the fact it has no result on the ignition. evaluate it element of their charm. Many in uncomplicated terms leaked at start up and would re seal after the gasket have been given moist and warmth. it is not an illustration if a heavily overheated engine. actually salt and shortage of a varnish type sealant at the same time as first assembled. you could mush some silicone down in there in case you opt for for, as nicely the shown indisputable fact that it will not get the placement you opt for for it.

Answer 3

It can also mean that the cooling water that is mixed (depending on motor design) with the exhaust is finding a path back to the valves.

Head gasket or coolant/exhaust issue - get it fixed now or pay dearly later.

Answer 4

It could be the lower shaft seal. If it is bad it will allow water to be sucked into the lower cylinder.

Answer 5

water indicate the headgasket is leaking or water is entering through the air cleaner or intake air hoses