sparky_spit Posted October 11, 2018 Share Posted October 11, 2018 On a Triumph 4cyl engine, sitting upright, I think I can prime the oil pump by taking the pressure relief valve/plunger out and introducing oil through the hole, which leads into the top of the pump? Can someone confirm? I didn't pack the pump with petroleum jelly when assembling it as I'm not convinced it would melt/dissolve enough with cold oil passing through the system as I prime the engine with a drill down the dizzy hole before first start up. I did fill the pump with oil when I fitted it but the engine has been rolled over a few times on its stand during the last few days and I reckon it's all drained out by now. Thanks Quote Link to comment Share on other sites More sharing options...
WIMPUS Posted October 12, 2018 Share Posted October 12, 2018 Or... take dizzy out and put on in it via there ? If you take the gear out that drives the oil pump / dizzy you can then make a 'tool' to drive the oil pump with a drill ! So you can get oil everywhere in the engine. Quote Link to comment Share on other sites More sharing options...
thescrapman Posted October 12, 2018 Share Posted October 12, 2018 I have used the "backfill" technique in the past. Quote Link to comment Share on other sites More sharing options...
sparky_spit Posted October 12, 2018 Author Share Posted October 12, 2018 Thanks gents. I know that the over-pressure position of the valve plunger dumps oil straight back into the sump, but it was not easy to see if the bottom passage comes direct from the pump or not without taking it all apart again. Hi Wim - yes, I've used an anti-clockwise spinning screwdriver end in a drill to pressurize the system before and it works well, but not so well initially if there is not at least a some oil in the pump to start with. Once you get some pressure, with cold oil, it certainly puts a surprisingly large load on the drill. The cam chain must groan a bit when that happens in use. As an aside, the oil pump must surely put the most load on the cam's drivetrain, much more than the cam/rockers/springs and distributor combined. Quote Link to comment Share on other sites More sharing options...
Nick Jones Posted October 12, 2018 Share Posted October 12, 2018 RV hole doesn't dump direct into the sump but back into the pump inlet. I use the electric drill technique myself..... Nick Quote Link to comment Share on other sites More sharing options...
Guppy916 Posted October 20, 2018 Share Posted October 20, 2018 I used the drill to prime my GT6 after the rebuild, yes it loads the drill at least you get oil around the system, refitted dizzy then I still spun it over with the starter and no plugs in just to make sure, and no rocker cover on, quick check on valves, rocker cover on and fire it up, never looked back Quote Link to comment Share on other sites More sharing options...
Guppy916 Posted October 20, 2018 Share Posted October 20, 2018 a quick change of thread, to post a photo the box opens and it tells me it put in "source" and "image list" what do I put in these boxes, I use an iMac pc I really need help with this Ta guys Quote Link to comment Share on other sites More sharing options...
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