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My dirty valves PIC
Ok here is a pic of my DIRTY valve. This is an exhaust valve. They were dirty like this last year when I pulled the engine. I ran a bottle of Techron through in the spring, but this is what they look like now??????
![]() What do you think I should do? It ran real strong like this. Shawn
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Shawn 77 Targa with 2.7 My never-ending work in progress that has been off the road since Mar 2004 ![]() |
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Senior Member
Join Date: Jan 2001
Location: Left Coast, Canada
Posts: 4,572
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Shawn,
There is a similar post nearby about this. Warren and John have commented. I don't know if Techron is really intended to rid the exhaust tract of hard carbon, as it is the intake and fuel system of varnish etc. It will take carbon out of the combustion chamber if used in sufficient doses. That carbon on your motor's exhaust valve looks pretty tough. Is oil being burnt in that cylinder?
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'81 SC Coupe "Blue Bomber" "Keep your eyes on the road, and your hands upon the wheel."- J.D.M. Last edited by Doug Zielke; 02-02-2002 at 07:12 PM.. |
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Doug all my valves look this bad, but the car ran great (or as great as it always has??) I just was wondering how I might be able to fix it, without a top end job or full rebuild. Could it be my valve guides are going (gone) I have no idea what causes this?
Shawn
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Shawn 77 Targa with 2.7 My never-ending work in progress that has been off the road since Mar 2004 ![]() |
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Join Date: Jan 2000
Location: Reno, NV
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Shawn,
What are you up to? I must have missed something...is your motor out of your car? What are you doing??? Fill me in! ![]()
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It looks like coking. Things get pretty hot on the exhaust side.
Clinton |
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Can't really tell, but is that carbon build up, or burned oil in there?
Steve |
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Shawn:
What do the spark plugs look like?? Post a pic when you get a chance.
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'94 CMC Firebird Trans Am '86 951 LS1 (C-2) Gone ![]() ![]() '77 911 3.2 (C-1) Gone but not forgotten. http://www.pelicanparts.com/MotorCity/marcesq1 http://www.youtube.com/user/958Fan#p/u |
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Spark Plugs
Spark Plugs are
NGK BP&E S They are alll the same according to my Haynes manual pics they are all pretty good. Maybe a bit on the dark side (oil deposits) but not coated as the book says. I had no problem with starting (once I replaced the check valve) and the engine wasn't misfiring or hesitating as far as I could tell. Thanks Leland I have the engine out because it is winter ![]() ![]() Stay safe over there and hurry home Shawn
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Shawn 77 Targa with 2.7 My never-ending work in progress that has been off the road since Mar 2004 ![]() |
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