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  #1  
Old 05-26-2011, 10:26 PM
Thunder38843 Thunder38843 is offline
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Default 1987 Dodge Ram 4x4 Water Pump Replacement

Water pump went out on my 1987 Dodge Ram W-150 318 engine.

Any tips on replacing it. I think I know how to do it, but any advice would be greatly appreciated!
Thanks in advance for any help.
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Old 05-26-2011, 11:28 PM
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ramvan2500 ramvan2500 is offline
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Quote:
Originally Posted by Thunder38843 View Post
Water pump went out on my 1987 Dodge Ram W-150 318 engine.

Any tips on replacing it. I think I know how to do it, but any advice would be greatly appreciated!
Thanks in advance for any help.
Yea since you know how to do it no problem then some tips and things you will need to know.

When installing it would be best to put some Permatex Hi-Tack gasket sealant on both sides of the water pump body gasket, it helps seal the gasket and it also is very helpful with installation.

Another thing, their is going to be like two or three wet bolts these bolts require thread sealant. I recommend Permatex PTFE Thread Sealant. The wet bolts are the longest bolts.

Torque all bolts to 30 foot lbs
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Old 05-27-2011, 07:23 AM
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deanthecrabman deanthecrabman is offline
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Does the 318 have the bypass hose? If it does, you might want to change that while you're in there.
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Old 05-27-2011, 02:26 PM
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Quote:
Originally Posted by deanthecrabman View Post
Does the 318 have the bypass hose? If it does, you might want to change that while you're in there.
Well I know the newer 318's do have that bypass hose. However I am not sure if the older 318 does. The block hasn't changed but the heating has a little and from carb to fuel injection. But yea it would be wise to replace that hose if their is one. That or just drill 3 small holes in the thermostat.
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Old 05-27-2011, 07:45 PM
Thunder38843 Thunder38843 is offline
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Thanks for all the replies guys. Replacing the pump was easier than I thought it would be. I went by the tips you guys gave, and very much appreciate the help.

Yes. The 318 I have does have the bypass hose.

NOW for the bad news! We I started the truck it didn't want to run.... more of a lope and wouldn't idle. I do recall it did get pretty hot before I noticed the heat gauge and pulled over. When starting off it would jerk and shake badly, and seemed to have a miss.
I replaced the plugs and wires. No help! Replace the pcv valve. No help! Then I opened the breather and saw it had a milky fluid coming from a brass looking thing with a hose running to the breather on the right valve cover.

I have no clue what the problem could be. Any ideas?
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Old 05-28-2011, 11:55 AM
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deanthecrabman deanthecrabman is offline
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Sounds like you have water in the oil. Head gasket probably went when it got hot. Time for a compression test.
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Old 05-28-2011, 02:41 PM
Thunder38843 Thunder38843 is offline
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Looking at the oil on the dipstick it doesn't have water in the oil. Could it have jumped time when it got hot?
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Old 05-29-2011, 06:58 PM
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deanthecrabman deanthecrabman is offline
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If you've got it on the dipstick, that's alot of water, but it will tend to rise in the engine. Remember, it's hot in there, so the water is going to be vapor. I'd do a compression test to check it out. More likely the heads warped when it got hot.
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Old 05-29-2011, 07:35 PM
Thunder38843 Thunder38843 is offline
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UPDATE: I now have water on the dipstick.

Thanks for the advice Dean. Tow her to the shop Tuesday I guess. I wonder what this is gonna cost me?
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Old 05-29-2011, 08:30 PM
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Quote:
Originally Posted by Thunder38843 View Post
UPDATE: I now have water on the dipstick.

Thanks for the advice Dean. Tow her to the shop Tuesday I guess. I wonder what this is gonna cost me?
You should have replaced that timing chain cover gasket in addition to the water pump gasket. Coolant flows through the timing chain cover and is seperated from the oil that circulates in the timing chain cover by the timing chain cover gasket. Also I wonder if you put thread sealant on those wet bolts.
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