VW vacuum leak cause is incredible --

[goodfellow]

Apparently a faulty rear main engine seal is causing the fuel trims to become very unstable and the car's developed a substantial miss. The smoke machine is the only way to track this apparently common VW problem down. 

You could have sprayed this engine with brake clean all day and the numbers would not have changed.

[stokester]

I've never heard of a smoke machine used for an intake/vacuum leak.

My use was limited to EVAP leaks which can be very hard to find.

On a side note I still cannot get used to mechanics wearing watches and rings while working on vehicles.  My military training coming through.

[muddy]

I've never heard of a smoke machine used for an intake/vacuum leak.

My use was limited to EVAP leaks which can be very hard to find.

On a side note I still cannot get used to mechanics wearing watches and rings while working on vehicles.  My military training coming through.

Intake/vacuum leak is a very common use for a smoke machine.

I'm still old school and use carb cleaner...

Sent from my twisted mind of the mudman

[Uncle Buck]

I've never heard of a smoke machine used for an intake/vacuum leak.

My use was limited to EVAP leaks which can be very hard to find.

On a side note I still cannot get used to mechanics wearing watches and rings while working on vehicles.  My military training coming through.

Intake/vacuum leak is a very common use for a smoke machine.

I'm still old school and use carb cleaner...

Sent from my twisted mind of the mudman

I have heard of smoke machines and understand how they work, just can't justify the expense, one old duffer playing in the shop you know.

[muddy]

Apparently a faulty rear main engine seal is causing the fuel trims to become very unstable and the car's developed a substantial miss. The smoke machine is the only way to track this apparently common VW problem down. 

You could have sprayed this engine with brake clean all day and the numbers would not have changed.

Imagine telling the customer that rough running is from a bad rear main seal.

I'd never believe the guy that would tell me. However these German cars are just so finicky

Sent from my twisted mind of the mudman