Ok so I get my B20 from HMO and I was changin the plugs and in the no.1 spark plug runner IC oil. I thought ok just from shippin ya know? So today I pull off my IM to have a look around and I look @ the No. 1runners @ the valves. The very first in. valve looks like its taost. Very black and oily. So Ic if I can scrape it off and then I turn the carnk and when the valve closes (should be completely seal'd correct?) the carbon would blow around above the valve!!!!! Do I have a burnt valve? Or could this be worse... burn'd/busted rings/lands? The engine is still out of the car so any help would be great. Thanks.
O and if anyone has pictures that would be really sweet!

Blaze


[Modified by Blaze45, 1:00 AM 1/21/2003]

 

do a leakdown test with the cylinder at TDC and see if air comes out of the intake/exhaust.

here is what mine looked like...the car would not idle, due to the masssssive hole

 

What causes burnt valves?

 

Leaning out, heat...

 

Huh? Please explain.

 

Improper valve lash clearances (too tight) will cause a burnt valve

 

engine goes too lean, valve heats up, becomes weak, breaks off.

aftermarket valves good way to go.

 

Im sorry, I was under the same impression...Isnt this correct?

 

I burnt a Ferrea the same way. Proper tuning is the way to go!