150 4/S flush valve

[bassbama]

Don can you hook a hose to the flush valve as long as you leave the engine at idle or do you still need to use muffs? Wanting to check for leaks and oil level after performing routine maintenance.

1B947225 150/4S

thks

[cfm56doc]

Don can you hook a hose to the flush valve as long as you leave the engine at idle or do you still need to use muffs? Wanting to check for leaks and oil level after performing routine maintenance.

1B947225 150/4S

thks

From what I have read and understand, the flush valve is not intended to cool the engine while it is running, it is only for flushing out the motor. If you chose to run your engine, you should be running muffs.

Again I am no expert on this, but thisis what I came to understand reading post in here. Perhaps somsone with more knowledge on this subject will chime in.

[bassbama]

From what I have read and understand, the flush valve is not intended to cool the engine while it is running, it is only for flushing out the motor. If you chose to run your engine, you should be running muffs.

Again I am no expert on this, but thisis what I came to understand reading post in here. Perhaps somsone with more knowledge on this subject will chime in.

That is what I always thought until I saw a Merc dealership service dept running an engine on the flush valve. When I asked aren't you supposed to use muffs he said "As long as you only idle the engine it's ok" so didn't know if Merc informed mechanics that this was acceptable or this service center may have been mis-informed.

[cfm56doc]

That is what I always thought until I saw a Merc dealership service dept running an engine on the flush valve. When I asked aren't you supposed to use muffs he said "As long as you only idle the engine it's ok" so didn't know if Merc informed mechanics that this was acceptable or this service center may have been mis-informed.

I hope he was right as that would sure make leak checks following engine maintenance easier for those of us who prefer to do our own maintenance!

[EuropeanAM]

Utilizing the pin-style Mercury Earmuffs is BEST, as it brings water in (and out) via the same pathways used when the engine is running down the lake.

The "hose" attachment is a Coastal Flush Attachment, and is best for flushing salt from the system after Saltwater Use. It's drawback is that it pushes water BOTH ways through the system, sometimes resulting in sand, silt, debris passing back into the water pump.

I don't recommend using it as a "running" device for this reason.

[Table Rock 1]

Thanks for info..