Posted by LOU from Wi. on January 08, 2015 at 19:36:52 from (69.179.8.18):
Our 72 Ford F100 4X4 with a 75 cab has had a new experience. Since the muffler blew out, from the condenser separating from the wire and the fork terminal, the explosion caused the oil pressure to jump from 25 lbs to 50 lbs at idle. Checked it against a new gauge,still the same pressure reading 50 lbs cold. This engine all we did many years ago was to put new main bearings in it to help and ran STP oil treatment with each oil change (yearly). The oil is the same straight 30 weight,and was changed in the fall before plowing season,so it's not new oil. We have it plugged in with the block heater, and it starts like summer time. When we redid it we added a power steering pump to it which it never had from the factory.But back to the question, after the backfire why did the oil pressure increase? I never seen it happen before,any suggestions. It is used to plow around our tractor shed,so it is tractor related.lol. Picture is of the truck, before and after, it has a 390 V-8 with points system. LOU
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Today's Featured Article - Diagnosing Engine Difficulty - Diesel Tractors - by Staff. The following suggestions are listed for your assistance. You can make simple adjustments on your tractor that will improve its operation and save you the time and expense of hiring someone to do it for you. Always make one adjustment at a time, and if the adjustment made does not improve the condition, return to the original setting before proceeding to the next adjustment. Hard Starting Cold air temperatures. Insufficient fuel.
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