NA Burnin Oil

[Magma]

My Brother-in-law's '92 B&T with 130K on the clock has burned 1.5 qts of oil in the last 5 weeks. anyone have some things I can check to help diagnos the prob.

TIA

[Nexus Flux]

Check for carbon buildup or soot on spark plugs. Check the PCV system. Check for oil leaks around the oilpan, head, and valvecover.

[channelmaniac]

PCV Valve is a cheap and quick thing to replace for that.

Beyond that it's time to look under the car for puddles... if it's not there then it's getting burnt. Time to look at the plugs and maybe do compression & leakdown tests.

Any smoke?

[Magma]

To my Knowledge no puddles or smoke. I will talk to him and see if we can check plugs soon. I have no Idea what a PCV is

[Titus]

To my Knowledge no puddles or smoke. I will talk to him and see if we can check plugs soon. I have no Idea what a PCV is

On the passenger side on the valve cover, there is a rubber hose that runs to the intake manifold. The PCV valve is what plugs in to the valve cover and connects to the hose.

[Magma]

Gracias Todd

[trickyrix]

I have no Idea what a PCV is

The PCV valve is the plastic elbow poking out of the valve cover on the passenger side. It is connected via a black hose to the intake manifold. The valve allows the gases inside the engine to be burned in the cylinders instead of being vented to the air. With that many miles, I'd just go pick one up at VatoZone and replace it.

[TheChadVIII]

My '91 is burning a good bit at 140k too, smokes above 5,000rpms. Worn piston rings, WHEEE!
DRIVE IT LIKE ITS STOLEN!

[Nexus Flux]

Here is a little guide once you get around to checking the plugs.

Linke

Oh and PCV stands for Positive Crankcase Ventilation. A good PCV valve should rattle. It works like a check valve.

[Ted the Red]

With that many miles, I'd just go pick one up at VatoZone and replace it.

You will most likely have to ask for it. At least I did because it was behind the counter and not with the others on the peg board. The part number is PCV148, and it is only $2.19.

[boisking]

If it is going through 1.5 quarts in 5 weeks-but not smoking- I'd look for leaks. Burning that much oil in that timeframe would likely give a pretty noticable blue smoke from the tailpipe. If this is sudden, and closely following an oil change, check the oil plug and filter for tightness. If the filter is leaking, check it for two double-stacked gaskets. Lube shops are notorious for letting that happen.