There is a "tell-tale" hole in the casting, I *think* to the rear of the pump body. If coolant is leaking here, it will be visible in the valley area and means the pump gland seals are about to fail. Don't confuse this with leaking inlet manifold gaskets which also cause coolant to be visible in the valley though. Badger.
Hmm, that's clear enough, assuming that you think a cesspit have crystal clear water in them...
OK, how does one tell if it's the inlet manifold gasket leaking - and don't say that coolant will be visible in the valley?! :~)
I may be showing my age here, but I'd have said tappets were the ends of pushrods - in which case the Visa doesn't have any to rattle.
Tappets is another name for cam-followers, AFAIA all engines have cam-followers, otherwise the cam would have to act *directly* on the valve-stem!...
Howsabout this - Looking carefully, with the aid of a small mirror and a decent light source? Not wanting to sound pedantic, but what did you expect? You need to look and see where it's coming from. Badger.
Exactly, so your previous message wasn't really not much help, it doesn't *mean* the pump gland seals are about to fail, it just means that the engine *probably* [1] has a coolant leak. Either away any suspected water leak on either the Stag (or 1850 based [1]) engines need investigating PDQ.
[1] basically half a Stag engine - although not quite as 'fragile' as it's big brother.
No, Jerry, read it again. IF the leak is from the tell-tale hole at the pump, then it's a safe assumption that the pump needs attention, wouldn't you say? Now, if you want to continue being pedantic when someone is trying to offer genuine help based on personal experience, may I suggest you go troll another newsgroup? Do you or have you ever actually owned a stag? No, I didn't think so! Oh, and don't bother going back to uk.rec.models.rail as everyone there has plonked you!
It has to drain at a lower point than the top, the pump and cover are virtually flush/lower in the block. The impeller is lower than the housing flange and the housing steps into the block about 15mm.
The actual weep holes, in the brass cage (148454 - holes not shown in diagram) are about 40-50 mm lower than the top bolt (149095), between the impeller seal(water) (148332) and the lower oil (sump)(148501) seal.
The brass cage pushes into the block, sealing off the water jacket. and the lower seal the sump from the weep channel. (between the two O rings which are shown, go onto the cage top and bottom)
The method used to let the weeping water out is through the block.
Yep! clear an muddy water :)
r
The best way to look for leaks is to have coolant in the motor which is coloured. Coolant is thinner than water and leaks show better and distinguish from wet weather water.
Also keep an eye on the temperature gauge for variations.
Coolant, which should be in the engine, is coloured.
So you did not write the following then?
Don't confuse this with leaking inlet manifold gaskets which also cause coolant to be visible in the valley though.
alt.troll is that way ====>>>
Err, yes, but how does that help the owner know were it's leaking from?! :~)
FFS, you moron, BY LOOKING!
NOW GO TROLL SOMEWHERE ELSE!
We know that one needs to look but *where* and how, obviously not simply looking for water in the 'valley', as the water could be from more than one place [1].
Might I suggest that if one suspects a water leak the best course of action is to carry out a (controlled) pressure test on the coolant system, after any suspect areas have been dried of water - using compressed air in hard to reach areas - doing this one should be able to see the coolant *actually* escaping.
[1] the same is true for most V engines even where the water pump is conventionally placed
Indeed. On my Rover V8 EFI there are a number of ways water can end up in the valley and it's very difficult to tell where it's coming from. I suspected the worst with a recent case on mine but it turned out to be leaking round the threads of the temp sensor. Phew.
Its is visible.
That's like saying, because there is a puddle of water, it must have rained...
From experience its quite visible where the coolant is coming from, as there ain't many alternatives choose.
Coolant will still be green when it comes out the exhaust. (now guess what the problem is then)
Yes, I know that if you look for were the coolant is leaking from one will see were the leak is - but - this all started because that pratt "Badger" said that is we see water in the valley then it means the pump is leaking, unless it's not the pump, you then came along and said that the coolant is coolant coloured and when I asked how that helps, you replied "because it's visible"!...
That should have been the end of story
- but - this all started because that pratt
The pump does not leak into the valley unless its the flange gasket of the housing.
unless it's not the pump, you then came along and
Most likely green fluro, or now some companies are also making it orange and yellow.
and when I asked how that
Well then again - Fluro colours of coolant are visible and distinguishable from puddles of water.
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