Apparently I have a little oil leak. Can someone advise me what part of the engine this is? Maybe this is common, I don't know.

Context shot.

Oil metering pump

Yep. I hope you're still getting the proper amount of oil injection?

How would I know that?

You may just need a new o-ring for it.

or

get a block off plate, remove the lines and run premix

As per FSM, you're suppost to remove the oil injectors, set them up over a small cup, and run the car for a short period of time and then measure how much oil is in the cup. Somehow that test makes me nervous. https://www.nopistons.com/forums/pub...IR#>/blink.png



The only thing that doesn't make me nervous is ditching it and running premix. https://www.nopistons.com/forums/pub...#>/biggrin.png

I was worried about mine because it has leaked small amounts of oil ever since i got the car...but i've been told those oil injectors leak even if you buy a new one...or rebuild it...might try replacing the lines tho...mazdatrix sells them for about 15 each i think...



from what i understand theres really not much in there...a "piston" which is actually about the size of a pin...and some seals...plus i've been told that they almost never go bad



so unless your hoses are getting brittle i wouldn't worry about it

Would a grommet or something like that not keep the oil from leaking?

from what i understand...no...they just leak...no matter if you rebuild them or not...its just something to do with the design...but it probably wouldn't be a bad idea to rebuild it...since it supplys oil to your almost or over 20 year old engine...shouldn't set you back too much since its only a few parts and some seals...and it beats buying one new...cuz i'm pretty sure they're around 150 bucks from mazdatrix