Engine Performance problem
2002 Chevy Avalanche V8 Four Wheel Drive Automatic 245000 miles
My " New" fuel pump squeals even with 1/2 tank of gas. With the gas cap tight, there is a " Extreme" vacuum created in the fuel tank. The Squeal is reduced when the vacumm is vented through the gas cap and I can can hear alot (I mean Alot of Air) of air rushing into the tank. I changed the cap and have the same problem. Codes that I have seen are (1) bank 1 to Lean (2) bank 2 to lean (3) Random misfire (4) Evap sys.
Should I be looking for a blocked line or EVAP canister?
Thursday, January 28th, 2010 AT 5:21 PM