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Originally Posted by Philm
(Post 3575335)
My hose pushes at least 40 lbs, but wont push water past my raw water pump. It also does not even come close to keeping up with the raw water pump as far as flow. It regularly sucks the garden hose flat at anything over an idle.
Originally Posted by apollard
(Post 3575409)
I agree with Philm - unless you bypass the raw water pump, the engine never sees 80 psi. Mine runs 70 psi, and I get no flow until cranked.
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Originally Posted by Eliminator28
(Post 3575595)
After pressure testing the Manifolds, and running water through the risers, and finding no leaks, I have to conclude that this was self induced... Too much hose pressure I guess.. God I've done this a hundred times.
I can't imagine that water can go past the pump.. at a higher volume than the pump is pumping. Does that even make sense? The idea of using the 5 gal bucket sound like the safe bet. Good one, and soon to be my new process |
Intake manifold , and water went down, bent valve, or broke piston..
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I run sea strainers, and my flush fittings come in just after the strainer outlets. When I turn the hose on, I leave the hull valves open, and it backflushes my strainers. The hose keeps the strainer pot full, and the engine just sucks out of it like normal, so once it starts, water stops flowing out the pickup. No chance of pressurizing the system like that.
My old boat wasn't set up quite like that, so I always made a mad dive for the hose valve as soon as I killed the motor, because the hoses would start coming under pressure. |
rod is probably shaped like an S and your piston is hitting the counterbalance of the crank. time to pull it. sorry to hear about your bad luck..
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If you are putting water to the muffs, regardless of pressure, the water cant get past a non-spinning impeller in the raw wter pump so not to worry. Muffs also leak like crazy under very little pressure. There would be no way to get 80bs onto th head gaskets usng muffs on the drive.
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eliminator28,have you pulled the engine yet,im curious as to what you found.
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1 Attachment(s)
Originally Posted by Knot 4 Me
(Post 3574387)
Merc had a bulliten out awhile back on running their motors on a garden hose. They recommended @ 1,200 RPM and not to have a ton of water pressure coming out of the hose. When you backed off the lower RPM and high water pressure could have reverted water. Are you sure it didn't just drop a couple of cylinders and die?
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I guess I have been lucky, but I think I've broken every recommendation on that bulletin at one time or another!
:eek: |
Originally Posted by 40gt
(Post 3583051)
I guess I have been lucky, but I think I've broken every recommendation on that bulletin at one time or another!
:eek: |
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