Oil pump vent??
#1
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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??
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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??
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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
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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
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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.
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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
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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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