85 740 won't start

[morgan1227]

I guess I didn't get the cam sprocket bolt tightened enough, so I lost timing and it ran poorly on startup (white smoke, rough idle), so I timed it again using the turn the cam sprocket approach, and made a tool to ensure that it was torqued to spec this time.

I also removed the vacuum pump this time, made the job much easier. On an earlier removal, someone had just used silicone gasket goo, instead of the volvo sealing ring(1328593). Is that OK to do again, or should I try to obtain the ring?

Also, the vacuum push rod fell out (of course) as I removed the pump. I remember someone saying that it matters which way it goes in, but it sure looks symmetric to me. Should I take it work and have them put it on the CMM (measures accurately to .0002")? What would we be looking for?

[ngoma]

Originally Posted by morgan1227

I also removed the vacuum pump this time, made the job much easier. On an earlier removal, someone had just used silicone gasket goo, instead of the volvo sealing ring(1328593). Is that OK to do again, or should I try to obtain the ring?

Dunno? Was is leaking with the gasket goo?

Originally Posted by morgan1227

Also, the vacuum push rod fell out (of course) as I removed the pump. I remember someone saying that it matters which way it goes in, but it sure looks symmetric to me. Should I take it work and have them put it on the CMM (measures accurately to .0002")? What would we be looking for?

Look carefully at the surface of the end(s). Do they look the same, or is one end more shiny, maybe with concentric rings?