My Saxo is going up in smoke...blue/white

[Alex2001mk]

Hey guys,

I have a problem with my Saxo.

When I rev it to higher revs, blue/white smoke blows out the exhaust pipe. The thing is that when I keep the gas pedal down and keep the revs constant its fine, but as soon as I get my foot of the gas and the revs drop smoke blows out of my pipe.

My guess is that the seals on the out-valves are gone.

Is this true and if it is what's the cost of repelacing them?

If not, what do you suggest it is?

Thanks,

Alex

[citrovts]

it can also be your headgasket