[DeTomaso] oil-burning question

[Christopher Kimball]

I'm not sure about the intake gasket, but I know the PCV valve was recently replaced to try and solve the other oil burning problem (passenger side on de-acceleration).
 
Chris
#3846
 
 
> From: jtaphorn at kingwoodcable.com> To: JDeRyke at aol.com; chrisvkimball at msn.com; detomaso at realbig.com> Subject: Re: [DeTomaso] oil-burning question> Date: Mon, 7 Jan 2008 18:41:07 -0600> > Jack states, "> Consider: the only two ways oil can get into the combustion > chambers "> > Two additional ways that oil can get into the combustion chamber> > 1) PCV Valve> 2) compromised intake gasket.> > Both are quite common sources.> ----- Original Message ----- > From: <JDeRyke at aol.com>> To: <chrisvkimball at msn.com>; <detomaso at realbig.com>> Sent: Monday, January 07, 2008 11:30 AM> Subject: Re: [DeTomaso] oil-burning question> > > > In a message dated 1/6/08 5:11:52 PM, chrisvkimball at msn.com writes:> >> >> Any ideas as to why I saw the blue stuff upon startup, and from only the> >> driver's side pipes?> >>> >>> > Consider: the only two ways oil can get into the combustion chambers is to> > either bypass the rings from below or leak past the valve guide seals at > > the> > top. A cracked ring can act this way and a leak-down test will show the > > bad ring.> >> > Since stock and 'overhaul' valve guide seals are not really seals but> > oil-deflectors, oil that pools in a rocker cover has more opportunity to > > seep past> > ineffective seals. It may also be that the skimpy stock oil drainbacks in > > the> > head on the side where startup smoke is seen, are plugged or partially > > blocked> > causing the pooling to be deeper and last longer. The seals. made of > > neoprene> > rubber, also harden and turn brittle after a decade or so soaking in hot > > oil.> > Such seals then crack and the pieces fall into the oil pan to cause more> > trouble. Both drainback-blockages and disintegrating seals are quite > > common on> > Cleveland engines. Both drains in the head can be cheaply cleared without > > removing> > the heads from the engine, by the way- if it turns out this was the cause.> > First start the engine and let it run for only a minute or two. Then pull > > the> > spark plugs on the smoking side to determine which cylinder is causing the> > problem. Oil in a chamber will leave oily black debris on a plug, if you > > catch> > it before engine heat burns the evidence away. Once located, you can> > concentrate efforts on that chamber. Pulling the driver's side rocker > > cover after> > running for a minute will quickly show if oil is not draining back > > properly- excess> > oil will come out in a cascade all over everythjing! A disintegrated > > seal is> > difficult to see on an assembled head but often, bits of a bad seal are > > still> > up in the rocker chamber. Good luck- J Deryke> >> >> > **************> > Start the year off> > right. Easy ways to stay in shape.> >> > http://body.aol.com/fitness/winter-exercise?NCID=aolcmp00300000002489> > _______________________________________________> >> > Detomaso Forum Managed by POCA> >> > Archive Search Engine Now Available at http://www.realbig.com/detomaso/> >> > DeTomaso mailing list> > DeTomaso at list.realbig.com> > http://list.realbig.com/mailman/listinfo/detomaso > >