Oil pump vent??
#1
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Oil pump vent??
My car has been leaking oil BADLY from the oil pump ever since I rebuilt the engine. I was thinking it may have been a bad oil outlet o-ring and was going to pull the engine again, but on closer inspection I noticed something peculiar when I was pulling my power steering pump... there was a hole on the oil pump housing.
"Hmmmmm" I thought. I then shined my flashlight down the hole. I could see all the way through to the pan. I then unwound a coathanger and shoved it in. Sure enough, it went all the way in and came out dripping with lube. Since I threw out my old oil pump, I could not verify if this hole in the new pump is supposed to be plugged or not. Could somebody check for me pleeeeease??
The car only leaks oil under load at WOT, and it leaks A LOT. It has sprayed everywhere in my engine bay, and I cannot touch anything in there without getting oil on me.
"Hmmmmm" I thought. I then shined my flashlight down the hole. I could see all the way through to the pan. I then unwound a coathanger and shoved it in. Sure enough, it went all the way in and came out dripping with lube. Since I threw out my old oil pump, I could not verify if this hole in the new pump is supposed to be plugged or not. Could somebody check for me pleeeeease??
The car only leaks oil under load at WOT, and it leaks A LOT. It has sprayed everywhere in my engine bay, and I cannot touch anything in there without getting oil on me.
#2
Cpt. Slow
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We couldn't tell.
It should be sealed. Originally it was the dipstick tube hole for the 323 I believe. I think I have silicone in mine, or a JB welded plug, not sure, its from the factory.
Edit: if you're good with cleaning out your engine, looks like you might be able to drill a bit oversized and tap it for an NPT plug. 1/8 or 1/4.
It should be sealed. Originally it was the dipstick tube hole for the 323 I believe. I think I have silicone in mine, or a JB welded plug, not sure, its from the factory.
Edit: if you're good with cleaning out your engine, looks like you might be able to drill a bit oversized and tap it for an NPT plug. 1/8 or 1/4.
#3
Mazda makes a plug that goes in that hole. If you bought your pump from mazdamotorsports website, they will have included that plug with the oil pump. I'll see if i can get a P/N for it...
mazda part number:
9930-71-000
it looks like it runs $1.38
taps in with a punch and light taps from a hammer.
mazda part number:
9930-71-000
it looks like it runs $1.38
taps in with a punch and light taps from a hammer.
#6
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Awesome thanks guys. I got my pump from NAPA and had to make a pickup tube gasket and find a circular oil outlet o-ring. I didn't realize there was more.
I'm not sure if this is the problem though because whenever I accelerate, my oil pressure goes down. I guess we'll see if plugging this works.
I'm not sure if this is the problem though because whenever I accelerate, my oil pressure goes down. I guess we'll see if plugging this works.
#7
Mazda makes a plug that goes in that hole. If you bought your pump from mazdamotorsports website, they will have included that plug with the oil pump. I'll see if i can get a P/N for it...
mazda part number:
9930-71-000
it looks like it runs $1.38
taps in with a punch and light taps from a hammer.
mazda part number:
9930-71-000
it looks like it runs $1.38
taps in with a punch and light taps from a hammer.
--Ian
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