OK for starters, I have a 1996 Chevy Extended Cab Cheyenne Truck, it has a 6 cylinder EFI Vortec Engine.
When driving, the motor is solid, sounds good. When going up hill, there is a Clicking sound from what I think is the Heads/Valves. The truck has LOTS of mileage, aprox 165,000 miles, and still going. I have not changed the Timing chain as of yet, things that are good for high Mileage Motors. I have always changed my oil on time, Tunups on a Regular basis. I guess thats one reason why it is still going good. Or I think it is. Soon I am going to have the engine rebuilt. As in a couple of Months. I am not that good with heads. I have read the other post with the Roller Cam issue, where there is a similar sound. But of course, this thread is different. Nohting hot rodding on that Truck.
Do you recomend Adjusting the Valves? I have never had that done before on that Engine.
Thanks in Advance, you Rodders are Great!, Thanks!!!