2.5dhse compressor

BAZZ · Oct 19, 2010

Havin problems with the water system on my p38. Engine has been rebuilt after co2 in water. All new parts fitted, wpump stat and cap. Top hose still gets very hard the vacuum guage was ok yesterday but today it just fails. Pump is pulling air in some were but not letting water out. Now totally ****ed off,

Bazz.

Datatek · Oct 20, 2010

Vacuum guage? If it's pressurising, either you have an airlock or the head is cracked.

BAZZ · Oct 20, 2010

C/Hd has been pressure tested twice and skimmed once. All other ancillaries are new. Going to fit another w/pump and new hoses. Cant think of anythink else??

wammers · Oct 20, 2010

BAZZ said:
Havin problems with the water system on my p38. Engine has been rebuilt after co2 in water. All new parts fitted, wpump stat and cap. Top hose still gets very hard the vacuum guage was ok yesterday but today it just fails. Pump is pulling air in some were but not letting water out. Now totally ****ed off, Bazz.

Vacuum gauge on the coolant system? The seals on the water pump are designed to prevent water leaking out and the seals are biased in that direction. You will always be able to suck air in from outside if you apply a large vacuum to it. System should be static tested with pressure not a vacuum. Sounds like you have an air lock. Also cracked heads on these engines can be pressure tested until hell freezes over and still leak because the crack only opens when they get hot.

BAZZ · Oct 20, 2010

C/hd was tested hot and then skimmed, Bazz.

wammers · Oct 20, 2010

BAZZ said:
C/hd was tested hot and then skimmed, Bazz.

Top hose on BMW will get hard. What is showing on the temp gauge?

BAZZ · Oct 21, 2010

Running normal temp on gauge, this was part of the initial problem the sencor for the guage was'nt working untill it was too late. Had to buy another engine and get it preped to refit. This sucking air is the latest installment of a 3 month rebuild. Once its sorted i will not be buying LRr again, its been very expensive. Bazz.

wammers · Oct 21, 2010

BAZZ said:
Running normal temp on gauge, this was part of the initial problem the sencor for the guage was'nt working untill it was too late. Had to buy another engine and get it preped to refit. This sucking air is the latest installment of a 3 month rebuild. Once its sorted i will not be buying LRr again, its been very expensive. Bazz.

With the head of water above the pump and the positive pressure being exerted by the water heating it is not possible to suck air into the coolant system. If it's running normally on temp gauge and gauge is now working, what is your problem. Run the engine from cold with cap off squeeze hoses to force any air out top up as required.

2.5dhse compressor

BAZZ

Active Member

Datatek

Well-Known Member

BAZZ

Active Member

wammers

No longer with us, RIP

BAZZ

Active Member

wammers

No longer with us, RIP

BAZZ

Active Member

wammers

No longer with us, RIP

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