Engine/Transmission (1994 - 1998) Wastegate stuck?

[JGrover]

Is there an easy way to check if the wastegate is stuck open?

Or do I have too pull the turbo?

 

[Matthug]

Pop the rubber line going to the wastegate diaphram and put about 30 psi shop air to it and watch to see if it moves.

 

[JGrover]

Thanxs, Thats what I thought. I tryied blowing in it, couldn't tell. Was actually busy changing out the fuel lines. Cut off the 1/2" short L shaped primer pump fuel line. The new straight fuel line kinks really bad. Probably will not be able to get a prime. Its the 4th, So out of luck getting Dodge/cummins fuel hose. Checking everthing why lost some boost. (10 PSI) Changed intake manifold gaskets,Intercooler boots looked good,Ats exhaust manifold was loose. Still putting truck together. hopefully can get a prime. So putting air to the wastegate, If the arm moves, It should be Good? Or do they leak past the seats sometimes?

 

[Matthug]

It shouldn't move until atleast 15 PSI if you have the stock diaphram.

 

[JGrover]

Truck has the Banks big head Wastegate. Did not see it move at 30 psi. It moved at 50 psi with a nice return thump. Will get to test run truck after I get new short L shaped primer pump fuel hose. Truck needs primed

 

[Matthug]

Thats good then, the banks head is supposed to be set for 43 PSI. Do you have a lack of power? Or just lack of boost on your gauge? One time I was only registering 25 PSI when I was running 38 the day before, turns out the line for the gauge got rubbed through going through the firewall and it was leaking.

 

[JGrover]

Not getting my 32 psi boost, only 24 psi at same throttle settings. Drop a gear and spin another 500 rpms (2500 rpms) I could reach 30 psi. Ive always been able to do all my pulling at 1800/2000 rpms without droping a gear. (30/32 psi boost) Hopefully the 3 GSK I put in, does not move all your power up the rpm scale?