Good Evening..I have a 93 Evo Softail. The top end was just redone about a thousand miles ago with a multi angle valve job, ported the heads, new rings and a Headquarters HQ-29 cam. First of all the bike runs like a bat out of hell and pulls extremely strong from idle to well I have not had the ***** to go past 5000 rpm with the screamin eagle ignition set-up.

Now here is my issue..When I start the bike (cold) I get a big puff of blue smoke for less than a second, nothing after that? It only seems to appear when the bike is cold and not after riding a short or long distance? No noticeable amount of oil consumption? By the way the issue has just started doing this about a week ago.

Any ideas or input?

Thanks in advance..

 

A puff of blue smoke is definitely oil related. Most likely your rings have'nt completely seated or oil is getting past you valve guides. Give it some more miles & keep an eye on your oil level. By the way, goose it good every now & then, if it's the rings, it will help seat 'em. By the way, I'm originally from Richwood, fellow West Virginian!

 

He pretty much summed it up. I wouldn't be overly concernd just yet, but keep an eye on it.

 

Valve Guide Seals &/or Stem to Guide Clearance:

Your description is textbook perfect for this sort of failure.

When you shut the bike down when it's hot and then let it sit a long time (liker overnight) enough oil will seep down past the intake valve stem so that whe you first fire it up again a small amount of oil gets burned . . . ergo a puff of blue smoke. You're always burning a little but "little" is the operative word. It's only after hours of sitting that enough accumulates to give you a visable puff of blue smoke. So-o-o-o-o what to do? I'd say the folks who did your heads need to take a look at the guide seals they used and/or the valve stem to guide clearance. It's not something that will make your engine expire anytime soon . . . but niether should it be doing it.