Running lean

Draco · Post by **Draco** » Mon Jun 01, 2009 3:41 pm

I have checked vacuum lines, even the vacuum on my guage shows no diffs, normally I could see a vacuum leak on my guage.

The WG might somehow stay closed....I will take the actuator arm off and see if it moves easy, that is all I can think of and the vacuum hose between compressor and actuator seems fine, although, before I could take it off completly and the boost would not increase at all(that is why I stated I need a new turbo), why now suddenly increase....

It is just funny that all this happened directly after I put fuel in....

Charlvdw · Post by **Charlvdw** » Mon Jun 01, 2009 3:58 pm

Draco wrote:I have checked vacuum lines, even the vacuum on my guage shows no diffs, normally I could see a vacuum leak on my guage.

The WG might somehow stay closed....I will take the actuator arm off and see if it moves easy, that is all I can think of and the vacuum hose between compressor and actuator seems fine, although, before I could take it off completly and the boost would not increase at all(that is why I stated I need a new turbo), why now suddenly increase....

It is just funny that all this happened directly after I put fuel in....

Maybe you shouldve tried using fuel before.

Draco · Post by **Draco** » Mon Jun 01, 2009 4:05 pm

Wise ass

....ok when I put in that spicific fuel on that spicific day...

Draco · Post by **Draco** » Tue Jun 02, 2009 7:33 am

Last night I checked the wastegate, not stuck, opening and closing properly....

I just need to understand something....when I said that my boost increased you guys suggested that I check for vacuum leaks.....the way I understand it is if there is a leak under boost, the turbo might boost more because there is air escaping.....but that does not show on your boost guage....if anything your boost guage will show boost then decrease.

How would a boost leak(vacuum leak) cause your guage to read more boost and keep it there?

I have never seen it when I had vacuum leaks nor other cars....

Gary57 · Post by **Gary57** » Tue Jun 02, 2009 8:40 am

You can have an air leak and your gauge wont even pick it up because your turbo can supply enough air. A vaccum leak on the lines going to the actuator will cause the boost to increase.

Its either a faulty gauge or your actuator is damaged.

Draco · Post by **Draco** » Tue Jun 02, 2009 8:51 am

Gary57 wrote:You can have an air leak and your gauge wont even pick it up because your turbo can supply enough air. A vaccum leak on the lines going to the actuator will cause the boost to increase.

Its either a faulty gauge or your actuator is damaged.

Draco wrote:the way I understand it is if there is a leak under boost, the turbo might boost more because there is air escaping.....but that does not show on your boost guage

Vacuum leak would be visisble on your guage, unless it is a very little leak and that would not cause a 0.3 bar increase would it.....

Draco wrote:the vacuum hose between compressor and actuator seems fine, although, before I could take it off completly and the boost would not increase at all(that is why I stated I need a new turbo), why now suddenly increase....

I can not exclude the guage faulting, but why now suddenly, it was fine before.....and why as I said this all happened directly after I put in fuel on that spicific day and time....