The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Engine is tapping bad, but not all the time, how do i adjust valves?

JimKshortstep4x4 · 10-24-2002, 07:34 AM

I adjust valves as Hooter does, but I install the little clips on the rockers to keep the oil from squirting over the top of the cut off valve cover. I have done the 1/4 turn tight as Hooter does for a lot of years and it works well over time.

The rattle you hear could be lifters or possibly rods. The lifters are the first to rattle when oil pressure drops off. If the engine oil is ok, it is possible that the pickup screen is set too high in the pan or has dropped off. When you go around a curve the oil can move away from the oil pump pickup and what you describe sounds like a loss of oil pressure.

Jim

10-24-2002, 07:34 AM	#5
JimKshortstep4x4 Senior Member Join Date: Jul 2001 Location: Muskegon,MI,USA Posts: 6,026	I adjust valves as Hooter does, but I install the little clips on the rockers to keep the oil from squirting over the top of the cut off valve cover. I have done the 1/4 turn tight as Hooter does for a lot of years and it works well over time. The rattle you hear could be lifters or possibly rods. The lifters are the first to rattle when oil pressure drops off. If the engine oil is ok, it is possible that the pickup screen is set too high in the pan or has dropped off. When you go around a curve the oil can move away from the oil pump pickup and what you describe sounds like a loss of oil pressure. Jim