Reply To: Timing a 6HP Johnson 1989

[joesnuffy]

That did solve the problem. Motor running on top or bottom cylinder revving up and idling.

I re-did my 90hp 4 Stroke Mercury down here in St Pete a couple years ago. It was a freaking nightmare I purchased the boat knowing it had this issue but the price was right and we wanted a 4 stroke down here after it was said and done it still was a good deal for me. It had great compression but when started it would start re-filling the crankcase with water not fast but gradual enough to drive you nuts. I changed the head-gasket still no go. Changed to a fresh water cylinder head still no go. Finally decided to change the short block to a fresh water short block making the motor like new. That fixed it. When I inspected the old short block I finally found a hole in it from salt water big enough to put a piece of wire through it. I am trying to find the picture of the hole and will post it hopefully later. Just thought I would share.

I will figure out a way to hook up a hose to motor should be pretty easy I had one rigged to the 4hp folding motor.

Thanks,
Joe

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