The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - 1984 Chevy C-10 Pick Up Hard To Start and Stop Engine

piecesparts · 01-01-2006, 02:00 PM

The comment that the plugs are covered with oil indicates one of two things. The valve guides are leaking oil, which is very common or the rings are getting bad. You stated that your compression showed around 125 pounds or so on all of the cylinders, so I am guessing the valve guides. Oil seeping in through the plug threads is not an option (If it was then you would have exhaust leaking out when the motor is running. The plugs on a Chevrolet have a tapered seat to seal them and that should not be where your problem is. I agree with the idea of cleaning the top end, but if you can't find a "Berryman Top End Cleaning Kit" you can use some auto tranny fluid and slowly dump it down the carburetor as you are reving the engine. You have to keep the motor running so it may require some high RPMs. after you have dumped the fluid down the carb let it set for awhile and soak, then start the truck and drive it until the exhaust clears. If you live in a suburban area, I would find a rural place to do this. The SMOG Cops will hate you for about 15 minutes or so. It really looks bad until the motor flushes clean of the fluid.

01-01-2006, 02:00 PM	#14
piecesparts Parts and more parts Join Date: Nov 2003 Location: Lebo, Kansas (middle of nowhere Posts: 6,821	Re: 1984 Chevy C-10 Pick Up Hard To Start and Stop Engine The comment that the plugs are covered with oil indicates one of two things. The valve guides are leaking oil, which is very common or the rings are getting bad. You stated that your compression showed around 125 pounds or so on all of the cylinders, so I am guessing the valve guides. Oil seeping in through the plug threads is not an option (If it was then you would have exhaust leaking out when the motor is running. The plugs on a Chevrolet have a tapered seat to seal them and that should not be where your problem is. I agree with the idea of cleaning the top end, but if you can't find a "Berryman Top End Cleaning Kit" you can use some auto tranny fluid and slowly dump it down the carburetor as you are reving the engine. You have to keep the motor running so it may require some high RPMs. after you have dumped the fluid down the carb let it set for awhile and soak, then start the truck and drive it until the exhaust clears. If you live in a suburban area, I would find a rural place to do this. The SMOG Cops will hate you for about 15 minutes or so. It really looks bad until the motor flushes clean of the fluid.