Terry Wiegand Posted December 5, 2022 Share Posted December 5, 2022 After over 400 miles of absolutely perfect running, there seems to be a serious problem with the oil pump in the '16's engine. One week ago today our insurance agent was out to take photos of the car since we have it all back together and drivable. We are doing this because we are going to change insurance carriers. Had the car out on the drive and started it up for Scott. It just ran beautifully for 5 to 10 minutes and when I went to shut it off I noticed that there was no oil going through the sight gauge on the dashboard. This scared the daylights out of me. We are running Havoline 20W50 oil in the crankcase. I do not believe that the heavier oil has anything to do with flow out of the oil pump. I had a good visit with Gregg Lange about the oil pumps on these early 6-Cylinder engines. These pumps are driven with a spring 'link' between the camshaft and the gears in the pump. We are of the thinking that something could have happened to that spring. I pay very close attention to the engine each and every time that it is started. There have been no funny sounds coming from anywhere in the engine. No oil leakage from the bottom of the pump. The output line from the pump that feeds the sight gauge is out in the open with no evidence of any oil loss at the line connection. The line coming out of the sight gauge feeds into the side of the oil pan and keeps the rod dipper troughs filled with oil. Again, there is no evidence of any oil loss at any of the connections. Gregg and I are of the opinion that the oil pan is going to have to be dropped so that access to the inner workings of the pump can be gotten to. During the engine rebuild it was noticed that this drive spring had extreme wear on the one end. We had a new spring made to the original factory specifications. The folks who made the spring have been in the spring business for decades and know a thing or two about these things. I don't know just yet what is going on, but the first order of business is going to be getting the oil drained out of the pan. I want to pull the bottom plate off of the pump and hand crank the engine to see if there is rotation on the drive shaft. IF there isn't, then that means the oil pan will have to come down to get to the inner workings of the pump. I have enclosed a sectional drawing in full scale of the engine and the oil pump area in specific. This has really bugged the crap out of me. How can this engine go from one day running just perfect and then have something like this happen. I will get to the bottom of this. Stay tuned. Terry Wiegand South Hutchinson, Kansas AACA Life Member #947918 1 Link to comment Share on other sites More sharing options...
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