waste gate sticking ?????

[whippit]

How free should the waste gate actuator rod feel,
long story short, wife had slight front end bump , pushed bumper back into turbo , car ran massive over boost when i drove home,
i took actuator of turbo in situ, sh-t of a job three small 8 mm bolts, when i moved the gate it felt lumpy, put back together car runs correct boost on gauge but does'nt feel right,
what type of bearing if any does the gate run in, i guess it only moves a few mill when on boost
do i need to strip down the turbo to service the gate

[GeoffSmith]

The actuator arm has a peg which goes through a hole in the wastegate arm; there is a circlip on the bottom of the peg.

The wastegate spindle runs in a phosphor bronze bearing and it should run extremely smoothly over 90°. The usual place for seizure is the peg and hole - I freed mine a couple of years ago but it was only when I had the turbo out and had taken it all apart that I really got all the crap out. After lubricating with copaslip, it's now running really smoothly.

Check the Wiki for more information.

[whippit]

looking through the manual it say the rod only moves a few mill to actuate the gate or should it move through a bigger plane,
i tried sucking on the pipe to move the rod but only managed a slight movement befor passing out,
does it move more under higher boost, the car does'nt feel as quick but holds the same boost on the gauge,

[lotuska]

Isn't it operated by pressure?, therefore don't suck blow...

Might also try using an airline from a compressor.

[GeoffSmith]

Isn't it operated by pressure?, therefore don't suck blow...

You'll have to be pretty good at blow jobs though........ ½bar?

[Elanlover]

Depends on how big your bar is I suppose..................


(couldn't resist )