Boost spike (not spikeS)

[Markus]

When I floor the accelerator for the first time after starting the car the boost often (always?) temporarily rises to ca 1,4-1,5 bar, stays there for a fraction of a second and then returns to a steady 1,1-1,2 bar. When flooring it after this, the boost will never go above 1,1-1,2 bar.

Could this be my WGFV sticking on the first acceleration or what? Should I be concerned? Is the WGFV servicable?

I once got the "maximum boost pressure exceeded" fault code, but normally there are no fault codes stored.

The engine is a stock ABY.

[Dr H]

Mine used to do this and it was the WG spring. Someone had tightened it up. I backed it off a 1/4 turn at a time and eventually got it to the point where is no longer spiked but went to a stady 1.1-1.2and stayed there.

Has the small blanking cap on your WG been removed? If not then it must be something else?

[Markus]

The cap on my WG is in place and looks untouched.

Did your car spike on every acceleration or just on the "first acceleration of the day" like mine does?

[Greg_S]

I think this is alot down the the time the ECU takes to respond to changes and of course the mechanics of it all. Like the WGFV

Greg

[Markus]

I think I'll try to clean and lube my WGFV when I find myself the time. There was a procedure on cleaning it with 5-56 on another site.

[Dr H]

Markus

Mine did it all the time sounds like yours is being caused by something else.