Hello. I am after a picture of the oil lines connecting to the oil metering pump on a stock 20b.
After some repairs for road worthy the engine is now leaking oil. It didn't use to leak before they "fixed it" but now it leaks a pool.
Had a look today and found one of the main leaks is coming from the metering pump.
It has been a long time since I have had the engine was out so I cant remember how the lines use to go. Seems to have positions for 4 banjo lines with a four way copper washer, but only three are connected and oil is coming out of the forth hole.
The three banjo fittings and lines going to the rotor housings are connected but not sure what the fourth hole is.
Any help would be great.

 

the 20B metering pump only has 3 holes, for the 3 lines for the 3 rotor housings. if you have a 4 line pump its from an FC/13B cosmo.

 

4 output holes means the OMP is a FC one. 13B-RE Cosmo and FD ones only have two output holes while 20B Cosmo ones have three (one per rotor)

In the following picture, you can see two of the three banjo bolts. The last one is in the top rear port, obscured by the electrical pigtails.



All ports are M8x1.25 and seal with the combined crush washer between the pump and lines, and individual crush washers under the banjo bolt heads. On my own build, I found it easier to use individual crush washers on each OMP line as Mazda did on all 20B's from the factory. The benefit is that you're not spending ~$10 every time you need to undo a single OMP line (crush washers shouldn't be reused without annealing them). Harbor Freight carries a SAE copper washer kit with several different sizes that our cars use. 5/16" is the same as M8, 3/8" is M10 and so on. The only sizes not in the kit are M14 (Turbo oil feed/return) and M18 (oil cooler lines).