The front of the engine has a set of gears that drive(from the crankshaft to the cam shaft, then to the side where the hydraulic pump (If it has a live hydraulic system, meaning that it will raise the bucket with the clutch pushed in) and distributor are located The cam shaft is driven by a keyway that locates the lobes in relation to the pistons. If the system wears the gear and keyway, it can fail with backfiring as a result. Other causes can also happen in the distributor system. Do a compression check. Buy or borrow a compression tester (make sure it fits the larger size spark plugs. Open the throttle all the way open, spark plugs all out, Ignition off, and fuel turned off. Crank the engine for at least 5 fill compression cycles. and read the gauge. It should be more than 120PSI. do the remainder, and tell us what the reading is. We will go from there. JimN
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Today's Featured Article - Pop's Tractor of Gold - by Gary Teate. My father was a simple man but could repair just about anythin mechanical that was ever made. From the time I was a young boy growing up in Jacksonville, Florida, I would spend a considerable amount of time helping my father repair or rebuild equipment and engines, etc. on our 2 1/2 acre "spread". Pop always dreamed of having more acreage out in the country where he could retire and tinker as much as he wanted and often reminisced about his boyhood days on his grandfathers farm in Montecello,
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