First I was getting a screaming noise once & a while. I know its vacuum related. Checked all the vacuum lines with a vacuum pump. Still have the odd scream peddle down, peddle up doesn't matter it seems to be random. I have had the occasional burp from the motor which I consider fuel related. I have been smelling diesel lately but cant find a leak under the hood. 3 times this week I have lost boost from the brakes. I'm putting all this together & coming up with a bad tandem pump. The car has 330K kms on it. Its a 5 speed. The head was replaced in February due to the soft cam issue.
Tandem pump?
