kennyo

You're saying the transom hose is off the pump and you can't push water thru just the hose? Maybe you got a mouse or something jammed in there!

blue thunder

You need to remove the hose from the transom. Shove a garden hose into the end of the water pump hose and turn the water on. You will get flow. After the engine runs a while with good flow shut it off and reconnect the intake hose to the transom and try again with the muffs. I have this problem every year and it always end with me doing the above. I do think though if you took it to the water and backed the boat in it would do the same priming action as I descibed above..

BT

Pwrbt33

iTrader: (2)

Everyone else is saying good advice. Also, some Bravo's have actually kinked the hose when trimmed up and to the side. Take a look up under the bellhousing and see if the hose is kinked shut. Just another thing to try!

John S.

US1 Fountain

iTrader: (1)

A few yrs ago on my previous boat, I was using the Merc muffs that have the pin that goes thru the drive pickup holes to hold it on. No matter what I did, it would not pull water. I held them tight with my hands, nothing. Thinking a blockage, I pulled the drive off. Good flow with hose stuffed into the transom assembly. With the drive on the stand and muffs hooked up to it. I could not get any water to go up that short 1 foot verticle rise. Craziest thing I ever seen. Tried a different set of muffs, water gushed up thru and out the drive like a mofo. Put the drive back on, used new muffs, no problem. For chits and grins I put the Merc muffs back on, nothing! Again tried to hold them tight against the drive by hand, still no go. Threw them away, never another issue again. I have no idea why they wouldn't work. They were only 1 yr old, so not dry rotted, hard or plugged up. And I had used them before with no issue.

zimm17

It's definitely worth $20 to try a different type before pulling the drive! Thanks for the tip.

fastedy

Run water backwards from the pump and see if it comes out the drive that should tell if you have a blockage, I also have had a kink in the hose around the bell, I have also had the pump sucking air when the gasket between the drive and bell was not correctly in place.

skyman2112

This thread is old but hey ya never know, I did this and seemed to have plenty of water flow, while the hose was hooked up i pinched the small 3/4 hose coming up from the drive and looked for water leaks inside at the transom and quck disconnect. Nothing. Backflushed the hoses between the PS cooler and pump outlet still couldnt find any restrictions. Removed the Cool fuel fitting to check for debris, also nothing. Still takes 30 seconds or more to build up enough water pressure to silence the alarm.

seafordguy

Earmuffs can vary greatly in quality and effectiveness.

Do you have a quality set?

Don't take this the wrong way but I'm not sure why anyone would use muffs on a Bravo style drive. Takes 2 fittings and 4 hose clamps to rig up a freshwater flush fitting....