helium4amc
16-07-2007, 10:42 AM
Hi,
I have a 1996 P reg A6 2.8 30V (engine code ACK) Quattro. Driving down the M5 last night, the oil and water temperature gauges went through the roof, so I pulled off the motor way and opened up the bonnet only to find that the water tank was emptying itself through the cap (an over-pressure failsafe i presume!). I called the AA out and he did a cobustion leak test with some blue liquid in the water, which promptly turned green, showing that combustion gases were getting into the water.
This, I am told, means either the head gasket is gone of the cylinder block is cracked, neither of which is a terribly good thing!
This leads me to two questions:
1) I am now stuck in Cheddar and have to get down to Plymouth (where I live) so that I can get back to work and sort it out in slower time. Is there an additive or somethign i can add to the water to give me a temporary seal that will allow me to drive the 100-odd miles back to Plymouth?
2) How easy is it to change the head gasket (assuming it is this) myself? I have done a bit of work on engines before and have changed an early 80s polo head gasket before with no trouble. Obviously, this is a rather bigger job! If it is going to be an absolute nightmare, does anybody have any idea of the cost I'm looking at to have a garage do it?
Thanks in advance for any help anybody can offer!
Cheers,
Andrew
I have a 1996 P reg A6 2.8 30V (engine code ACK) Quattro. Driving down the M5 last night, the oil and water temperature gauges went through the roof, so I pulled off the motor way and opened up the bonnet only to find that the water tank was emptying itself through the cap (an over-pressure failsafe i presume!). I called the AA out and he did a cobustion leak test with some blue liquid in the water, which promptly turned green, showing that combustion gases were getting into the water.
This, I am told, means either the head gasket is gone of the cylinder block is cracked, neither of which is a terribly good thing!
This leads me to two questions:
1) I am now stuck in Cheddar and have to get down to Plymouth (where I live) so that I can get back to work and sort it out in slower time. Is there an additive or somethign i can add to the water to give me a temporary seal that will allow me to drive the 100-odd miles back to Plymouth?
2) How easy is it to change the head gasket (assuming it is this) myself? I have done a bit of work on engines before and have changed an early 80s polo head gasket before with no trouble. Obviously, this is a rather bigger job! If it is going to be an absolute nightmare, does anybody have any idea of the cost I'm looking at to have a garage do it?
Thanks in advance for any help anybody can offer!
Cheers,
Andrew