0 Vauxhall Envoy
Vauxhall Astra Van Envoy CTDI Cooling system mystery

1 points

Problem added: Jul 16, 2009 (11 years ago)
Hello folks, Irecently bought a Vauxhall Astra Van Envoy CDTI 2006 from a ued van dealer and have in the past 2 weeks have topped up the cooling system resovoir with 4 points of water, there r no obvious system leaks externally, no breaches in the rad or hoses and the oil has not emulsified, the engine hasnt over heated and stays at a regular 85 to 87 degrees and only touches 90 when stopped in traffic, the engine runs fine and isnt running lumpy as in over heating, this is the first diesal engine ive owned, am i missing something, all appears well but why am i having to top up with so much water?, any ideas?. Cheers. Chris.

Car details
Car: Vauxhall Envoy
Category: Running Rough, Starting & Power Loss
Replies and Fixes
Top Fixer
395 points

Oct 7, 2009 (10 years ago)
diesel engines take a very long time to heat up properly. when its hot are the coolant pipes soft or solid. its possible that the head may be cracked and the coolant is evaporating. it wont upset the running, but will explain the coolant. i had one before with same problem. so as after doing all other things like stat, water pump rad etc, i took the head off. no problems with gasket so sent head for testing..... found 1 small crack... put new head on it...... she's a little flyer now!!!!
just food for thought!!!
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