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Showing results for tags 'oil pump prime priming'.
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So me and a buddy have spent 12 hours today searching the web and tinkering firing up my Z for the first time. For some background, it's a motor out of another Z I put into a better shell, and I've seen it run and everything worked properly before the swap. The 77 motor is now in a 76 shell, but that's another story. We got it to fire up and quickly noticed no oil pressure so shut it down. We absolutely proved that by removing the plugs and hooking a gauge up to where the oil sender is that there is no pressure to be had (fuel filter also dry). The oil pump is new and we took it off and put it on at least 5 times to try and troubleshoot. Each time we go the timing right, turned it over and no pressure. From all of the searching I did through forums the last issue I saw as an option was related to the filler tube and a possible clog in the screen. Dreading an oil pan drop, we tried a few more things and eventually went ahead and did it. The filler tube was fine, screen not clogged. We even went ahead and replaced the gasket where the top of the tube mounts. So... back to square one. Many threads spoke of using a drill or modified driver to stick town the dizzy hole and spin the pump to prime the system. We hadn't tried this yet because it didn't make sense to us that it was any different than turning the motor over. Anyway, we used a drill as described and had the oil filter off to look for signs of oil... sure enough it came spilling out.. We put the filter back on, and hooked the spare gauge up to the sender and BOOM, oil pressure climbed. NOW, here's where we're confused. Since you have to remove the oil pump after using a drill, in order to insert the shaft and properly align everything, you lose some oil out the bottom end and all. We hurried and put oil in the pump itself and hooked it back up with the shaft now inside and distributor set properly. Cranked the car over with (2) 15 second sessions with a 20 second break in the middle. ZERO pressure as before. I don't get what we are missing with this. It seems like we're losing something during the removal of the oil pump to get the shaft back in. Some people mention pouring oil down the dizzy channel (???) Sorry for the ramble but I want to express how many things we've tried over a very exhausting day. Any help would mean a ton. Thanks!
