Blue smoke?
08-11-2003, 09:08 AM
#1
Drifting
Thread Starter
Blue smoke?
Here is the situation:
I have installed new cam, valve springs, retainers but I reused old
valves and guides ( valves and seats were machined ).
Before any work done, engine worked great ( 16000 orig. miles ).
Now I have blue smoke coming from exhaust. Mostly on startup but
also while driving on deaccelerating and also while idling.
I know that it's normal that after all the work that I've done to engine,
and since everything was oiled ( valves, guides, cylinders...) before
assembling, that it will smoke on first start, but now the engine
worked 1-2 hours and it's still smoking.
I have new valve seals on intake valves and no seals on exhaust
( there were no seals originally ). New o-ring seals on all valves.
What do you think is wrong?
I have installed new cam, valve springs, retainers but I reused old
valves and guides ( valves and seats were machined ).
Before any work done, engine worked great ( 16000 orig. miles ).
Now I have blue smoke coming from exhaust. Mostly on startup but
also while driving on deaccelerating and also while idling.
I know that it's normal that after all the work that I've done to engine,
and since everything was oiled ( valves, guides, cylinders...) before
assembling, that it will smoke on first start, but now the engine
worked 1-2 hours and it's still smoking.
I have new valve seals on intake valves and no seals on exhaust
( there were no seals originally ). New o-ring seals on all valves.
What do you think is wrong?
08-11-2003, 09:46 AM
#2
Race Director
Member Since: Jan 2003
Location: Summerland B.C. Canada
Posts: 19,667
Likes: 0
Received 36 Likes
on
32 Posts
Re: Blue smoke? (Sliding)
Deaccelerating and getting blue smoke,sounds like a valve seal,guide issue to me.
Are these umbrella seals ?
[Modified by AGENT 86, 6:49 AM 8/11/2003]
Are these umbrella seals ?
[Modified by AGENT 86, 6:49 AM 8/11/2003]
08-11-2003, 12:22 PM
#6
Burning Brakes
Member Since: May 2003
Location: Beverly, MA MA
Posts: 822
Likes: 0
Received 0 Likes
on
0 Posts
Re: Blue smoke? (Podracer)
The exhaust does'nt have seals so they get extra oil, there is no vacum on the exhaust side to pull oil down to lube the guide.
as for the smoke I think you tore the seals when you put them on. Did you put the O ring on ALL the valves? at 16,000 mi. your valve guides are fine.
as for the smoke I think you tore the seals when you put them on. Did you put the O ring on ALL the valves? at 16,000 mi. your valve guides are fine.
08-11-2003, 02:50 PM
#7
Drifting
Thread Starter
Re: Blue smoke? (offershore)
The exhaust does'nt have seals so they get extra oil, there is no vacum on the exhaust side to pull oil down to lube the guide.
as for the smoke I think you tore the seals when you put them on. Did you put the O ring on ALL the valves? at 16,000 mi. your valve guides are fine.
as for the smoke I think you tore the seals when you put them on. Did you put the O ring on ALL the valves? at 16,000 mi. your valve guides are fine.
Bad guides really make no sense since I didn't even touch them and there
was absolutely no smoke or oil consumption before any work.
I was very careful with valve seals on intake ( Crane teflon valve seals )
so I don't think that I broke any.
08-11-2003, 08:34 PM
#9
Burning Brakes
Member Since: Nov 2000
Location: DFW TX
Posts: 1,117
Likes: 0
Received 0 Likes
on
0 Posts
Re: Blue smoke? (Sliding)
Mine did that after I changed the springs and used the old guide seals.
But the good news. It stopped after a while. Probably about a month.
I think I just pushed the seals down too hard on installation.
Drive it a while and see...
But the good news. It stopped after a while. Probably about a month.
I think I just pushed the seals down too hard on installation.
Drive it a while and see...
08-12-2003, 02:10 PM
#10
Drifting
Thread Starter
Re: Blue smoke? (92corvette)
Did you use the sleeve when yuo put the seals on?
Mine did that after I changed the springs and used the old guide seals.
But the good news. It stopped after a while. Probably about a month.
I think I just pushed the seals down too hard on installation.
Drive it a while and see...
But the good news. It stopped after a while. Probably about a month.
I think I just pushed the seals down too hard on installation.
Drive it a while and see...
I still didn't have chance to drive much because of work but I'll
get to it next week.
