While I do not discount your diagnosis, you are also not seeing the BIG PICTURE. There is more than one problem that can cause this condition. A flat cam lobe can also cause this. A blown head gasket is even more likely. Logically speaking, problems with intake valves are rare. Intakes to not see the heat of combustion passing by as exhaust valves do. Intake valves are simply not stressed to the same level as exhaust valves. Head gasket is another potential cause. If a gasket is blown out between two cylinders, it can cause compression pressure from one of the affected cylinders to exit through the intake of the adjacent cylinder if that cylinder is on its intake stroke. There are several potential causes to this problem. The most important thing is to do diagnosis and not to get tunnel vision.
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Today's Featured Article - Listening to Your Tractor - by Curtis Von Fange. Years ago there was a TV show about a talking car. Unless you are from another planet, physically or otherwise, I don�t think our internal combustion buddies will talk and tell us their problems. But, on the other hand, there is a secret language that our mechanical companions readily do speak. It is an interesting form of communication that involves all the senses of the listener. In this series we are going to investigate and learn the basic rudimentary skills of understanding this lingo.
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