Author Topic: Burning oil/ could it be valve seals or guides  (Read 19778 times)

Offline Chryco Psycho

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Re: Burning oil/ could it be valve seals or guides
« Reply #30 on: December 15, 2014 - 01:10:02 PM »
running rich should seat the rings faster , fuel would wash the oil form the cylinder walls & the ring would lack lubrication

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Offline cudabob496

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Re: Burning oil/ could it be valve seals or guides
« Reply #31 on: December 15, 2014 - 02:34:01 PM »
running rich should seat the rings faster , fuel would wash the oil form the cylinder walls & the ring would lack lubrication

makes sense, but if the rings lacks lubrication, that might do damage to the rings and cylinder wall, that harms the ability to seal,
but I'm just speculating.
72 Cuda, owned 25 years. 496, with ported Stage VI heads, .625 in solid roller, 254/258 at .050, 3500 stall, 3.91 rear. 850 Holley DP, Reverse manual valve body.

1999 Trans Am, LS1, heads, cam, headers, stall, etc! Love to surprise the rice rockets with this one. They seem so confident, then it's "what the heck just happened?"

2011 Kawasaki Z1000

Offline jimynick

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Re: Burning oil/ could it be valve seals or guides
« Reply #32 on: December 15, 2014 - 11:10:51 PM »
makes sense, but if the rings lacks lubrication, that might do damage to the rings and cylinder wall, that harms the ability to seal,
but I'm just speculating.
:iagree: you're not just speculating, that's what'd happen. Try running two bare-of-lubrication pieces of metal against each other at speeds up to 4-6000 rpm and see what you get. It ain't pretty.  :sadwavey:

Offline cudabob496

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Re: Burning oil/ could it be valve seals or guides
« Reply #33 on: December 16, 2014 - 12:13:17 AM »
Well, we still gotta find out if there is black oil gue on top of the intake valves?

#94 jets on the primary side? Pretty rediculous. Right now on my 496 I
have 78's on the primary side, and that is dialed in with an AFR meter.
(#86s on the secondary side of the 850 DP)

And, might be the PCV system sucking oil. But if it was the PCV system,
the inside of the intake would be oily.
« Last Edit: December 16, 2014 - 12:17:24 AM by cudabob496 »
72 Cuda, owned 25 years. 496, with ported Stage VI heads, .625 in solid roller, 254/258 at .050, 3500 stall, 3.91 rear. 850 Holley DP, Reverse manual valve body.

1999 Trans Am, LS1, heads, cam, headers, stall, etc! Love to surprise the rice rockets with this one. They seem so confident, then it's "what the heck just happened?"

2011 Kawasaki Z1000

Offline 734406pk

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Re: Burning oil/ could it be valve seals or guides
« Reply #34 on: December 16, 2014 - 09:13:55 AM »
Yeah the primary jetting sounds extremely rich to me. The carb could have been set up for E85 ? The #80s in the carb now are closer to the average. Hopefully the compression tests go well. Your right cudabob496, the intake should be oily if the PCV was sucking in that much oil from the valve cover.
1973 Challenger 440 6 pack auto 3.91 rear
2012 Dodge Ram 3500 dually 6.7 Cummins Fleece EFI Live
1973 Challenger 318 2bbl auto 2.73 rear 22.5 mpg RIP
1970 Challenger TA 340 4bbl auto-Sold and sad
1999 Dodge Ram 3500 dually 5.9 Cummins Fleece tuned VGT-sold
1995 Kawasaki ZX1100E & still alive

Offline 734406pk

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Re: Burning oil/ could it be valve seals or guides
« Reply #35 on: December 22, 2014 - 08:06:45 PM »
Kevin71 i hope we haven't lost you? :sadwavey:
1973 Challenger 440 6 pack auto 3.91 rear
2012 Dodge Ram 3500 dually 6.7 Cummins Fleece EFI Live
1973 Challenger 318 2bbl auto 2.73 rear 22.5 mpg RIP
1970 Challenger TA 340 4bbl auto-Sold and sad
1999 Dodge Ram 3500 dually 5.9 Cummins Fleece tuned VGT-sold
1995 Kawasaki ZX1100E & still alive

Offline cudabob496

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Re: Burning oil/ could it be valve seals or guides
« Reply #36 on: December 23, 2014 - 11:17:52 PM »
earth calling Kevin
72 Cuda, owned 25 years. 496, with ported Stage VI heads, .625 in solid roller, 254/258 at .050, 3500 stall, 3.91 rear. 850 Holley DP, Reverse manual valve body.

1999 Trans Am, LS1, heads, cam, headers, stall, etc! Love to surprise the rice rockets with this one. They seem so confident, then it's "what the heck just happened?"

2011 Kawasaki Z1000

Offline Kevin71

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Re: Burning oil/ could it be valve seals or guides
« Reply #37 on: January 01, 2015 - 05:30:04 PM »
Trying to do a compression check.  I am trying to turn it over by hand.  Not easy.  Also I am getting 60 lbs per sq in on the first cylinder.  Can turning by hand cause it to be this low?  Or is this incorrect measurement. 

Offline Kevin71

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Re: Burning oil/ could it be valve seals or guides
« Reply #38 on: January 01, 2015 - 05:36:28 PM »
Sorry to take so long.  But between work and other lifes issues I just can't get to work on it like I would like. 

Offline Kevin71

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Re: Burning oil/ could it be valve seals or guides
« Reply #39 on: January 01, 2015 - 05:45:59 PM »
Didn't realize so many people posted.  Ok so I need to put the battery back in and use the starter.  Should I put the intake back on?   Also I don't know how I can possibly get to the #1 cylinder.  I can't hardly get a plug in and out.  Can't use a socket wrench on it.  I put the socket on it and take a wrench and turn it.  I also have had to pull the steering column to replace the rubber seal at the joint as the shop busted it up.  I got it back together so I will put it back in. 

Offline Kevin71

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Re: Burning oil/ could it be valve seals or guides
« Reply #40 on: January 01, 2015 - 09:09:39 PM »
Alright finally got the column back in and the battery.  Started on the #2 because it was so easy to get to.  The gauge bounced up to 210 lbs.  I have to cook dinner on the grill and I am pretty tired and sore at this point.  I had back surgery a year ago so crawling around this car is a real work out at this poiint.  Anyway tomorrow is the big day.  I will go thru all the cylinders and report back to everyone.  Thanks so much for the support and patience. 

Offline 734406pk

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Re: Burning oil/ could it be valve seals or guides
« Reply #41 on: January 02, 2015 - 01:45:12 PM »
Hello kevin71! You don't have to install intake for the test, but follow all of the safety precautions. The spark plugs need to be removed from all 8 cylinders. The drivers side bank cylinders are labeled from the front of the engine back. They are 1,3,5,7. Passenger side front to back is 2,4,6 & 8. If your compression gauge is bouncing while you are trying to take a reading, the Shrader valve could be stuck open fron a piece of carbon or damaged. If you can't fix it, you'll need to borrow or buy a quality gauge. You'll want one with a hose and adaptor that screws into the spark plug hole. Summit, Jegs and any good autoparts store etc has them at a reasonable price. Accuracy here is very important in the diagnosis. Post if you have any questions. Good luck!
1973 Challenger 440 6 pack auto 3.91 rear
2012 Dodge Ram 3500 dually 6.7 Cummins Fleece EFI Live
1973 Challenger 318 2bbl auto 2.73 rear 22.5 mpg RIP
1970 Challenger TA 340 4bbl auto-Sold and sad
1999 Dodge Ram 3500 dually 5.9 Cummins Fleece tuned VGT-sold
1995 Kawasaki ZX1100E & still alive

Offline Kevin71

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Re: Burning oil/ could it be valve seals or guides
« Reply #42 on: January 02, 2015 - 06:33:59 PM »
Is 200 or 210 lbs of psi possible.  It seems what I have read they are generally around 180.  is that right?

Offline Kevin71

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Re: Burning oil/ could it be valve seals or guides
« Reply #43 on: January 02, 2015 - 06:36:20 PM »
Also should the gauge rise to the highest psi and remain there.  Or does it drop after the piston goes back down and the valve opens letting pressure off.  I have all the plugs pulled and the first time I tried it wasn't working then I realized I need to pull the rags out of the intake ports on the heads.  I am going to  try to do this tonight.

Offline 734406pk

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Re: Burning oil/ could it be valve seals or guides
« Reply #44 on: January 02, 2015 - 07:58:57 PM »
 Yes the gauge should rise and hold at the peak pressure. Limit cranking for 6 compression strokes on all cylinders.
1973 Challenger 440 6 pack auto 3.91 rear
2012 Dodge Ram 3500 dually 6.7 Cummins Fleece EFI Live
1973 Challenger 318 2bbl auto 2.73 rear 22.5 mpg RIP
1970 Challenger TA 340 4bbl auto-Sold and sad
1999 Dodge Ram 3500 dually 5.9 Cummins Fleece tuned VGT-sold
1995 Kawasaki ZX1100E & still alive