Nissan Navara Aventura X-Back - Head Gasket problem? loses water

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Sat 7 May 2016 01:25
Nissan Navara Aventura X-Back - Head Gasket problem? loses water - Kourosh888

Have just purchased this car from auction. When you check the oil cap there is dark grey colour greasy substance, and a further check shows no water droplets. There is no way that the water loss can be explained. There is no high pressure in the pipes engine seems to run well, no smoke from the back. Very distressed as just bought it & just changed the oil. Can anyone help? Thankyou

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Sat 7 May 2016 11:50
Nissan Navara Aventura X-Back - Head Gasket problem? loses water - Peter.N.

Look round the coolant filler cap and se if there are signs of dry coolant on the tank, if its beens blowing coolant out it should be fairly obvious. You can check by running the overflow pipe in to a recepticle of some sort and see if it is collecting coolant.

If you have head gasket leakage the will likely be oil in the coolant but not necessaraly. I would certainly have thought that the system would pressurise with leakage but it will probably do it when the engine is under heavy load.

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Sat 7 May 2016 12:04
Nissan Navara Aventura X-Back - Head Gasket problem? loses water - RT

I've had two cars, one petrol one diesel, which lost coolant but had no evidence in the radiator expansion chamber, no "mayonaise", no oily residue, no evidence of exhaust on the "sniff test" - both were gradual head gasket failure, one of them developing over 12 months to become terminal and requiring the engine/transmission to be rebuilt.

In both cases, an engine stripdown showed an initially small blow across the head gasket where the coolant was going into the combustion chamber - as the flow was only that way, it's presumed it occurred each time the engine cooled down.

The second one took 4 visits to the dealer, under warranty, all of which could find no evidence of head gasket failure - until the final failure!

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