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Old 14 March 2012, 06:01   #11
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DO you get an overheat alarm? It sounds like its ok to me. The telltales do pulse on those engines and they do run hot!
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Old 14 March 2012, 10:35   #12
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Robby the grommet could be split and partialy blocking the water tube on the top of the water pump, we have both seen that in the past
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Old 14 March 2012, 13:51   #13
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i should have a alarm in the control box right, doesn't sound off....
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Old 14 March 2012, 13:52   #14
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Quote:
Originally Posted by uncle al View Post
Robby the grommet could be split and partialy blocking the water tube on the top of the water pump, we have both seen that in the past
u talking about the impeller housing ????
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Old 14 March 2012, 17:14   #15
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Good point Uncle Al.
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Old 15 March 2012, 11:44   #16
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Kalidow Yes inthe water pump housing what happens is when they are not put up straight with a bit of marine grease on the grommet to help it slid in it cuts a piece out of the grommet restrickting the water flow, when you put the g/housing up there should be some mastic across the back of the water pump between the exhaust to stop exhaust gases getting into the flow of water.Also the water pump should be pushed home by hand and NOT jacked in with the fixings nuts or bolts
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Old 16 March 2012, 17:27   #17
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Any chance the impeller could be slipping on the shaft
Key way or even the impeller hub Itself that's seperated from the rubber part as can happen on some cheaper replacements
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Old 17 March 2012, 11:29   #18
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m chappelow the only way it would slip on the drive shaft if the keyway has not been fitted or slipped out puting it together,as for the rubber impellor slipping on its hub not a known problem but one worth checking,
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Old 18 March 2012, 05:48   #19
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Quote:
Originally Posted by uncle al
m chappelow the only way it would slip on the drive shaft if the keyway has not been fitted or slipped out puting it together,as for the rubber impellor slipping on its hub not a known problem but one worth checking,
Or if a rusty or slightly corroded key has perhaps been put back in place
,with regards to the hub/rubber separation I have in the past come across a few faulty new ones especially the ones with bronze hubs .
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Old 30 April 2012, 08:37   #20
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If you disconnect the three cooling pipes the 2 at the top of the block (one on each cylinder bank) and the one at the bottom I think you will find that the bottom one will be pouring water and the top 2 wont. When it is hot the stats will open and the top 2 will work. It could take up to 20min to get hot enough to open the top stats at idle. The other thing is that depending on the hose flow at your house you might not get enough coolant in to get it to work correctly try a barrel.
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