I just finished installing a 1.6 Turbo motor and turbo from a 1986 Jetta into a 1981 VW Pickup. The motor has been sitting for at least 10 years, last plates on the pickup were 1991. I had a tough time getting the engine to start but finally started by pull starting. There is a constant woosh when motor is running and which I believe to be coming from a leak where I welded the downpipe to the rest of the exhaust. Truck terribly lacks power-might reach 40 MPH in a mile. I installed a pressure guage with a vaccum T in the line that runs from intake manifold to injection pump-no pressure at anytime from 1st to third gear under full throttle. I blocked the exit for the pop off valve and the corresponding whole in the intake and test drove again-still no boost pressures-any suggestions? Bad turbo? Thanks,Brian
Did you check the turbo while the engine was out?
Did it spin freely?
Check the lines going to the LDA. I had mine burst once so I had no boost. It would just leak out of the hole.
Turbo did spin freely while motor was out, did not seem to have excessive wear or play