Idle engine knocking, increases with RPM speed?
I have a 92 GMC Sonoma 4.3L V6 and it has a knocking noise that seems to be coming from the lifters but I'm not sure. The oil gage doesnt work even after replacing the sensor. I have replaced most sensors including knock and idle air control sensor and it makes it run better and for a few it takes the knock away but once I rev it up the knocking will come back. I was told the oil pump, the timing chain, or my lifters are bad. I have taken off the covers and adjusted the lifters to the proper spec as well. It doesnt knock when cold only when it starts to warm up and be driven.