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Cam you test a Water Pump?

General Tech Talk

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Posts: 117
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Cam you test a Water Pump?

Post by skip-unstuck »

Hi All,
I have a 89 gq Diesel, When I put it to a good hill or hold any gear with revs it heats relativly quickly, It has all new hoses and new 3 core radiator 18months ago, Its either fan which I am about to put twin thermos on or the pump,

So can you test a water pump???
Cheers Troy
Do it!!
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Post by evo wagon »

i would leave the viscous fan on it as it works a hell of a lot better then thermo fans. you can buy the special oil of toyota for the fan. it only costs 5 dollars. also have you replaced your thermosat?
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cj
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Re: Cam you test a Water Pump?

Post by cj »

skip-unstuck wrote:

So can you test a water pump???
Cheers Troy
Yes, you can test for pressure and for pump generated cavitation.
[quote="4WD Stuff"]
I haven't quoted Grimbo because nobody takes him seriously :finger: :finger: :finger: :finger: [/quote]
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Post by dirtyGQ »

also is your truck blowing black smoke? may be getting too much fuel which will in cases cause overheating.
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Post by skip-unstuck »

it has a new thermostat when i put radiator in, It doesnt really blow much smoke at all, only on start up a little, but i know thats valves,

Running lean would also cause overheating, is that correct?
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Post by SLOGQ »

http://www.allhead.com.au/cooling.html

Try this, i have done this a few times and you would be suprised how crap some water pumps are, even brand new ones.....

Havent tryed it in a patrol yet though........
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Post by lay80n »

skip-unstuck wrote:it has a new thermostat when i put radiator in, It doesnt really blow much smoke at all, only on start up a little, but i know thats valves,

Running lean would also cause overheating, is that correct?
Nope :D
On a diesel, running rich causes overheating, as opposed to petrol which runs hot on lean mixtures. Check you dont have a air inlet restriction, like a blocked filter etc. Check your viscous hub. Run the car till it gets hot (not overheats though :)) then turn it off. The fan should be almost locked up. When its cold the fan should free spin easy.

Layto....
[quote="v840"]Just between me and you, I actually really dig the Megatwon, but if anyone asks, I'm going to shitcan it as much as possible! :D[/quote]
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Post by skip-unstuck »

cool, thanks for that, seems easy enough will give it a try this weekend
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