My 6v92 is starting up a bit funny, any ideas?

[Oonrahnjay]

any chace you are getting some fuel in your oil?

    There's always the "white paper towel" test for that.

[Utahclaimjumper]

  Let it sit unless you intend to DRIVE it!>>>D

[chessie4905]

Am wondering if we have another tired engine here. With turbo and wound up it runs clean. Oil getting past the rings burns nicely also.

[luvrbus]

It's painted red like a GreyHound rebuild ,he has nothing to worry about just run it till it gives up that's all he can do

[neoneddy]

Obviously I have very little experience I've just been reading and learning, nothing replaces real world experience of course.  From everything I've read it's not uncommon for an engine to  smoke from poor compression / incomplete fuel burn when cold.   Once I do the start shutdown cycle a few times , even while cold (even down to below freezing), mine doesn't do that, no smoke out the airbox drains, no pressure to speak of from the oil filler tube.  To me that means my rings and liners are in good shape still.  These are all no load observations of course.

PO was band, they took it to TX and back a few times I guess, but I called the Transit Company they bought it from.  They told me they never rebuilt it,  axel odometer says 127k or so.   So if it's rebuilt it would be from Greyhound.

You know I've been thinking about some thing off and on and now again.  It's about the fuel I've been using.  We have a local BP that was shut down for a year or more, then was re-opened and they undercut everyone around on fuel, especially diesel.  So I filled up there mostly, and it really starting acting up  after a tank or two from there,  I used a tank or so last fall.

Could old diesel be an issue?  The fuel filters are freshly changed last summer (500 -600 miles on it or so) I've read about new diesel being less lubricating.  Could untreated diesel / new formula or old stale diesel be possibly causing injectors to stick a bit on start up?

[luvrbus]

The new fuel doesn't cause a problem only with the filters.The GreyHound rebuilds really scare me sometimes,the largest over size bearings you can buy from DD or aftermarket are 0.020 and I have seen Greyhound engines with 0.060 mains and rods they must have a manufacture that makes those just for Greyhound.They got their money out of the cranks for sure   

[neoneddy]

Well I'm happy to report, with the help for Scott Crosby ( Busgreasemonkey.com ), that I'm probably being just paranoid.  He took a look and listen to it run today and said it sounded great, purred nicely.   He's gonna give it listen in the morning with a proper cold start, so we'll see for sure then.  But he all but ruled out the rack or injectors being an issue.