saigonij
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| posted on 20/1/08 at 09:23 AM |
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Header tank filling up
Hi,
brief history.
Zetec. Top Hose outlet of thermostat housing to top rad inlet.
Bottom hose of engine outlet ( water pump ) to bottom inet of rad.
The bottom hose then has two take offs - 1 to the exhaust side small 19mm take off on the thermostat housing, and 1 to the inlet side small 19mm take
off on the thermostat housing.
on the inlet side hose ( that goes from the small 19mm take off to the bottom hose T piece ) i have another T piece which goes to the header tank.
My issue is, with the engine running, everything is fine - water lever in the header tank is normal.
as soon as i give it revs, the header tank fills up right to the top...
this cant be good? Any ideas why? Have i plumbed it in wrong? ( i read all the zetec plumbing guides on here and used that )
[Edited on 20/1/08 by saigonij]
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Paradoxia0
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| posted on 20/1/08 at 11:23 AM |
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Have a quick think and look I came up with this...
Linky
On first looks it appears to be the same issues and a cure...
Mark
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saigonij
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| posted on 20/1/08 at 03:22 PM |
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well, it looks like i have it exactly as they have suggested, so i think that either
1) my expansion tank is too small or
2) i have over filled it...
i think a bit of both, as the expansion tank is off a corsa i think, but when in "rest position" the level of the water only just reaches
the bottom hose connector???
[Edited on 20/1/08 by saigonij]
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saigonij
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| posted on 21/1/08 at 11:28 AM |
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any other thoughts?
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NS Dev
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| posted on 21/1/08 at 01:46 PM |
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Air in the system somewhere.
Does it throw water out when it gets hot, could be headgasket, though unlikely.
Retro RWD is the way forward...........automotive fabrication, car restoration, sheetmetal work, engine conversion
retro car restoration and tuning
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paulf
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| posted on 21/1/08 at 03:25 PM |
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The header tank could be to small, I found that with mine if filled to far it blows out water but levels off near the bottom of the tank.
Paul.
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saigonij
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| posted on 24/1/08 at 09:34 PM |
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found the answer tonight...
i realised that the header tank was plumbed in right, but as follows ;
Expansion Tank ---------------------- Engine
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Bottom Hose
basically, the water pump pumps the water in to the engine, then it would come out of the top thermostat bypass, and because the expansion bottle and
the bypass pipe are connected on the straight part of the T piece, it was all to easy for the water to go straight in to the expansion bottle, rather
than go down to the bottom hose....
so i put the small T piece back down by the bottom hose, and ran a new pipe back up to the expansion bottle, so its not directly in the route
anymore...
and it works...
yeay!
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02GF74
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| posted on 25/1/08 at 01:59 PM |
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quote:
Originally posted by saigonij
as soon as i give it revs, the header tank fills up right to the top...
I hadn;t see nthis but my initial reaction was the engine is pumping wager into the tank.
Good job it is sorted 
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