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Topic Review (Newest First)
05-20-2019 03:18 PM
'48 Austin Congratulations and you did it without paying someone crazy money.
05-19-2019 04:01 PM
Ralfareno Heater problem solved. I replace the water pump with a clock wise rotation pump. Heater is working great. Radiator holding at 180.Thanks for all the help.
05-14-2019 02:18 PM
cerial I forgot the thermostat in that. Pull the hose at the block and pull the thermostat then tap the key
05-14-2019 09:57 AM
Heater Problems

I blocked off the heater return line.
05-14-2019 06:18 AM
'48 Austin What suction hose did you block off in your bucket test? If coolant can't get to the pump, then the pump can't pump coolant. If your pump is questionable, remove it and check it out. Check my pictures above to determine the pump rotation. You have a v belt drive so the pump impeller has to be designed for same as "crank rotation". See picture.
05-13-2019 01:01 PM
Ralfareno Here is what I did. I blocked off the suction hose. I removed the hose from the manifold. Installed a short piece of hose and pointed it in a bucket. Had a helper start the engine. No pressure coming out. I could block the flow with my thumb with no problem. I am now thinking the water pump is a reverse flow pump. What are your thoughts?
05-13-2019 11:19 AM
'48 Austin It sounds like you may have a big air bubble in the system. Make sure your radiator is full to the cap after it cools down. Do you have an overflow tank? If you do, it should be about 1/3 full when cold. Is your fan belt the proper width for the pulleys and tight? Pressure cap should be about 12 PSI. Modern cars go up to 16 PSI or more. Is your bottom radiator hose collapsing restricting flow to the water pump?
05-13-2019 08:39 AM
Ralfareno The engine would run at 142 degrees for the longest time an then jump to 180 and over heat.
05-13-2019 08:35 AM
Ralfareno Austin, Thanks for all your help. I did have some over heating issues. I had a non pressure cap on the radiator. It would take a very long time to over heat. Usually in stop and go traffic. I have since install a new aluminum radiator with pressure cap.
05-13-2019 07:00 AM
Originally Posted by Ralfareno View Post
Still working on this issue. I will try the bucket suggestion. Is there a way to identify a water pump? With out taking it apart?
Put some marking paint, whiteout, sticker, etc on the front of your crank pulley and water pump pulley.

Have someone tap the key while you watch to see if your crank is turning clockwise or counter clockwise.

If the water pump is turning the same way as the crank that is standard rotation. If turning the other way that is reverse rotation.

To find long from short you measure from the block face to the front of the pulley to get a rough measurement. Short is around 5 5/8 with a pulley. Long is around 7 1/4.
05-13-2019 04:53 AM
'48 Austin As was said in earlier posts, if you had the wrong rotation water pump, the engine would boil over in a matter of a few minutes. Also see my picture above.
05-12-2019 10:07 PM
Ralfareno I have discovered my water pump has seven bolt mounting. Does this indicate a ccw rotation? If so does anyone make a seven bolt cw rotation pump? Thanks
05-12-2019 10:51 AM
Ralfareno Still working on this issue. I will try the bucket suggestion. Is there a way to identify a water pump? With out taking it apart?
04-07-2019 08:59 AM
cerial Your heater hose on top of the intake feeds the heater then the return line from the heater goes to the waterpump.

Get a bucket fill it about 1/2 way up.
Put both these hoses in the bucket away from moving parts.
Start the engine.
It should spray out coolant from the intake(pressure)hose like nuts.

If it doesn't your pump has a issue.

Sometimes ford used a 3rd bypass hose which you can eliminate. This just bypasses the heatercore to keep hot coolant from running through it during the summer. Most of the time it does not work or causes a restriction. Less parts is better.

You can flip your hoses every couple of years to send coolant backwards through the heater core and keep it clean.
04-06-2019 10:51 AM
'48 Austin The 90 degree bypass hose and the heater both bypass the thermostat when the thermostat is closed with engine cold. By choking off the 90 degree bypass hose, the coolant has to go thru the heater especially when the thermostat is closed. Give it a shot.
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