Hold your hand over the throat of the carburetor while a helper makes an attempt to start the engine to see if you have much suction on your hand. Poor suction means low intake manifold vacuum. Could be your intake manifold has a leak. Check the bolts or nuts to see if they're tight. Spray some starter fluid around that area where your intake connects to the engine block while a helper try's to start the engine. If the engine fires you've found the leak. You should do a compression check and compare the readings. Worn cylinders and valves not seating can cause low manifold vacuum. All of this is related. Hal
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Today's Featured Article - Fasteners: The Nuts and Bolts of Nuts and Bolts - by Curtis Von Fange. The nuts and bolts of nuts and bolts is an interesting and essential piece of knowledge that applies to our older tractors. An improperly torqued capscrew on an engine head or a shear bolt that is too hard on the driving shaft of a bushog can create havoc and make an expensive and uncalled for repair. Let�s examine the purpose and design of these fasteners in order to ensure their proper use. Fasteners are probably one of the aspects of mechanics that is given the least amount of thought.
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