Your saying it is a 4.3 V6 with lifter tick set off alarm bells with me. A buddy with a 4.3 in an Astro van had noises like that, took it to the local GM dealer where the tech diagnosed it as needing new lifters. The spent big bucks replacing all lifters and still had the same noise. He allowed them to get away with that and just lived with the noise until a few weeks later when it developed an oil leak at the front of the engine. Back at the same dealer, they found the worn out timing chain that was slapping the chain cover and making the ticking noise, had worn a hole in the cover and was leaking the oil.
Check that chain before you do an expensive lifter job.
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Today's Featured Article - Tuning-Up Your Tractor: Plugs & Compression Testing - by Curtis Von Fange. The engine seems to run rough. In the exhaust you can hear an occasion 'poofing' sound like somethings not firing on all cylinders. Under loaded conditions the tractor seems to lack power and it belches black smoke out of the exhaust. For some reason it just doesn't want to start up without cranking and cranking the starter. All these conditions can be signals that your unit is in need of a tune up. Ok, so what is involved in a tune up? You say, swap plugs and file the points....now tha
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