The intake manifold, EGR valve, or exhaust manifolds can create fitment issues, too. A fourth important structural consideration concerns the openings in the valve covers. The early Chevy V-8s had ...

This is done in part with an EGR valve and how it works in a diesel engine. However, many owners have expressed similar issues, such as rough idling and stalling with their heavy-duty Chevy and ...

Question: I have a 1999 Chevrolet Silverado S10 and ... Answer: It’s possible you mean “EGR valve,” which is an important part of your car’s emissions system. The EGR valve recirculates ...

Q:I have a 1992 Chevy 1500 two-wheel-drive pickup with the ... I have to use at least 93 octane to stop the ping. It's not the EGR valve, and I've already replaced the plugs, ignition wires ...