Questions & Answers for: Chevrolet Silverado 1500 knocking valve

Heater/AC fan diverter door knocks The Heater/AC diverter door knocks about 30 times when I turn ignition on and after I turn it off. It is mystery. Is the electric and vacuum system? This started ...

valve seals and when you start it has adrop of oil going onto the piston,s and it burns that oil and also makes the compression a lot higher than it should be ,,causing the knocking and as soon as the

...knocking in the engine like the tappets r running dry with oil then it picks up sometimes then again it runs like that all day, whats wrong? It sounds like a pcv valve or maybe a egr valve, or maybe ...

...valve cover gasket replaced on my 2001 honda crv. Now , when I start the engine it sounds like a deisel until it warms up. They also replaced the serpentine belt. The knocking is coming from the side ...

knocking when it starts up and its starts up weak somtimes in the cold mornings If the oil pressure is good, then most likely it is one of the valve lifters.

i have a 2003 chevy silverado and im getting theodb code p0332 and code p2oo what is for the knock sensor and one is for the catalytic converter. the truck misfires while its idling. anything i can do

...knocking when starting. Using Mobil 1 and good filter. Any suggestions? Most engine knocks/noise is caused by worn rod/main bearings or piston noise, you are sure this is not a valve follower tap? in ...

2004 CHEV 5.3 KNOCK SENSOR CODE KEEPS COMING BACK well that means that it is detecting a knock or clunck of some sort. this could be from a back fire,possible timing chain, bad bearing,broken valve ...

...valve lifters, etc. that would cause a "knocking" or "tapping" in the engine.The next most probable cause would be damaged knock sensor wiring.  I have fixed many that have had damage from ...

2007 4wd 5.3l with 4 speed automatic transmission. What does it mean when the engine is making a knocking sound? Valve r hitting