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#84256 10/14/2007 2:13 AM
Joined: Feb 2007
Posts: 53
S
Wrench Fetcher
Wrench Fetcher
S Offline
Joined: Feb 2007
Posts: 53
hi everyone, I have an above mentioned rebuilt 261 that i only have maybe 200 miles on it and it smokes blue smoke, mostly at start up, when i installed the rebuilt engine the truck was not ready for the road, so other than the sitting in the garage getting everything dialed in i would start it an let it come to temp and check for leaks and the like, and to keep the battery charged i would start it, so i theoretically did not start driven it under load asap, anyways i hope that did not hinder the rings by starting it and not driving it.

I was thinking the other day that i installed the dipstick tube on this short block when i got it from the machinist, could i have put it in to high and have too much oil in the engine, just a question, my mind is racing on me.

the smoke is not noticeable when i am driving under load it semms to only happen at idle and start up, and when it comes down from a rev, from what i just said, this sounds like the rings have not seated, at start up sounds like oil coming down from top of head and sitting on piston till i start it, i worry to much, but hey i spent 1700.00 to get the head and block rebuilt, i guess i should just drive it and keep and eye on things...

any input would be greatfully appreciated

thanks alot
jeff mays

#84257 10/14/2007 5:44 AM
Joined: May 2007
Posts: 292
3
Wrench Fetcher
Wrench Fetcher
3 Offline
Joined: May 2007
Posts: 292
It's going to smoke a bit till it break's in guy. . .once every thing wear's in that it should slowly go away. . .


1962 GMC K3000, GMC-379 V6.

#84258 10/14/2007 10:56 AM
Joined: Mar 2002
Posts: 9,115
'Bolter
'Bolter
Joined: Mar 2002
Posts: 9,115
I don't know about startup but if it happens when you raise the revs after idling for a while, that is the classic symptom of valve seals. Is there any chance that too much oil is flooding the rocker area, say from a broken feed tube?


1951 GMC 1 Ton Flatbed -- It is finally on the road and what a great time I have driving it!
1951 1 Ton Completed


My Chevy Master 4 Door is on the Road!

Moderated by  Phak1, Woogeroo 

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