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More on smoke Posted by Cmyles [Email]  (#1126) [Profile/Gallery]
(more from Cmyles) on Thu, 29 Sep 2011 08:05:55
In Reply to: Yes, nipple cleaned. I see both of them., darcey, Thu, 29 Sep 2011 06:46:24 Members do not see ads below this line. - Help Keep This Site Online - Signup |
Darcy,
Keep in mind that smoke from the dipstick tube implies blow-by (exhaust forced into the crankcase) due to a ring or piston problem while blue-white smoke from the tailpipe means that oil is getting into the combustion chamber (but not the crankcase) and being burned, so those signs indicate two different types of problems. Oil gets into the combustion chamber by way of worn turbo oil seals, worn valve guides and/or valve seals and in some cases a bad head gasket. PCV problems can cause oil burning as well along with crankcase pressurization on turbocharged cars but the pressure is with air not exhaust (so no smoke from the dipstick tube). Also, if the tailpipe smoke is black and sooty then that has nothing to do with oil burning, it's from a rich fuel mixture which results from an injection system problem including possibly a jammed injector or defective fuel pressure regulator and a blown head gasket will cause steam (from the anti-freeze) at the tailpipe that resembles white smoke. Just for reference, I'm fixing a car right now that had zero compression on cylinder number one due to a cracked piston and broken ring (!) and it was spewing oil and smoke from the dipstick tube but no unusual exhaust from the tailpipe. The owner noticed reduced performance and the oil spewing under the hood but he drove the car from Colorado to L.A. and back on three cylinders by just dumping oil into the engine all along the way!! What a car!!
posted by 198.233....
, Thu, 29 Sep 2011 08:05:55 <-- Viewing This Message, Thu, 29 Sep 2011 09:25:45, Fri, 30 Sep 2011 08:19:46
, Sat, 1 Oct 2011 08:56:34
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