AQ125A Overheating help

[JCT-RFD]

Hi all, new to the board. Thanks to all of you, I have gained lots of knowledge for being a first time boat owner. I bought a 1982 Bayliner Capri 1950 with a VP AQ125A engine and 270 Outdrive.

One thing is stumping me though. I can't seem to get raw water to flow to cool the engine. I have replaced the bottom outdrive seals, hose connector from outdrive, hoses to the pipes, seals for the pipes around the raw water pump, impeller with seals, all the seals at the water exchanger, and have checked the exhaust manifold for clogs. It has a new thermostat also.

Is there anything that I am missing? I have tried it with muffs and in a tub of water to no avail. If I pour water from the inlet hose after the transom it flows great. Thanks for your help.

 

[dennis461]

explain that last sentence in more detail, I'm trying to figure out where you put water IN.

 

[jerryjerry05]

Welcome.
You have the hoses hooked up right?
​Bottom of the drive is a 1/2" hole that needs to be plugged while using muffs.
Use duct tape to seal the muffs(dry drive) and unhook the hose at the pump.
Turn water on and it should come out the hose. Check for leaks.

The thermo has nothing to do with the raw water side.

 

[JCT-RFD]

explain that last sentence in more detail, I'm trying to figure out where you put water IN.

When I disconnect the hose that goes from the transom pipe to the pump pipe and put water in the hose it flows without any problems.

I do plug the hole at the bottom of the drive. I will try sealing the the muffs and unhooking the hose. Thanks.

 

[JCT-RFD]

Thanks for the input. I sealed the muffs with duct tape and it flowed great. Now to test it in the water this weekend. Thanks again.