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Old 04-10-2019, 10:13 PM   #1
pyraxv
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Default No Oil Pressure!!!

Hey guys. i just finished my hybrid wrx build with an 11mm Orbit pump.

I have tried almost everything including filling the bottom of the pump through the bolts with assembly lube, cranking the engine over for 30 seconds to a minute, and taking off the oil filter.

I installed the pump completely dry. no lube whatsoever. Ive tried over and over again but nothing. Its a brand new pump. How can i get oil pressure?

heres a video
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Old 04-10-2019, 10:43 PM   #2
JSR84
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You can try pulling the plugs and getting some more RPM out of the started. I made the same mistake in my build by not packing the pump. I talked to IAG and they told me to send it and be ready to shut it off if I didn't get any oil pressure. So, I did and it had oil pressure immediately. Not ideal, but lesson learned.

Last edited by JSR84; 04-11-2019 at 12:28 AM.
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Old 04-10-2019, 11:17 PM   #3
pyraxv
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Quote:
Originally Posted by JSR84 View Post
You can try pulling the plugs and getting some more RPM out of the started. I made the same mistake in my build by not packing the pump. I talked to IAG and they told me to send it and be ready to shut it off if I didn't get any oil pressure. So, I did and it had oil pressure immediately. Not idea, but lesson learned.


plugs are already out. i think ill send it. how many seconds should i wait if i dont get oil pressure? If not immediately, should i shut it off? thanks
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Old 04-10-2019, 11:52 PM   #4
JSR84
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Quote:
Originally Posted by pyraxv View Post
plugs are already out. i think ill send it. how many seconds should i wait if i dont get oil pressure? If not immediately, should i shut it off? thanks
I'm not going to give you a number, all I can say is I didn't even get a chance to start counting.
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Old 04-11-2019, 12:28 AM   #5
pyraxv
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Quote:
Originally Posted by JSR84 View Post
I'm not going to give you a number, all I can say is I didn't even get a chance to start counting.


got it if its not instant, ill shut it off
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Old 04-11-2019, 08:49 AM   #6
Delphi
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I'd say about 1 second and if it doesn't get oil pressure kill it.

Did you check the back plate on the oil pump?? I've heard they can be loose on the ACL pumps.
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Old 04-11-2019, 10:44 AM   #7
pyraxv
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Quote:
Originally Posted by Delphi View Post
I'd say about 1 second and if it doesn't get oil pressure kill it.

Did you check the back plate on the oil pump?? I've heard they can be loose on the ACL pumps.


i havent. wouldnt there be a leak if it was loose? and wouldnt i see it while cranking? regardless, ill be taking the pump out to inspect it and pack it if i dont get oil pressure after one second of running timing
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Old 04-11-2019, 11:32 AM   #8
Delphi
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You won't see it if you're cranking. It is the plate that holds the gears inside, I have heard they can be loose not allowing the pump to build as much pressure due to leakage.

If you do pull it apart, loctite the screws in with some blue and it won't come apart.
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Old 04-11-2019, 11:50 AM   #9
pyraxv
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Quote:
Originally Posted by Delphi View Post
You won't see it if you're cranking. It is the plate that holds the gears inside, I have heard they can be loose not allowing the pump to build as much pressure due to leakage.

If you do pull it apart, loctite the screws in with some blue and it won't come apart.


ill definitely do that if i end up pulling it. Its an 11mm pump and i have a fully built short block. Do you know what good oil pressure would be? idle and under boost and vaccum? thanks
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Old 04-11-2019, 11:59 AM   #10
Delphi
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20 psi at idle with 1000 rpm is good.
70+ psi under load.

Really all you need to worry about.


Where is your sending unit located? Under the alternator or the rear one by the crank case breather.
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Old 04-11-2019, 12:01 PM   #11
pyraxv
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Quote:
Originally Posted by Delphi View Post
20 psi at idle with 1000 rpm is good.
70+ psi under load.

Really all you need to worry about.


Where is your sending unit located? Under the alternator or the rear one by the crank case breather.


under the alternator
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Old 04-11-2019, 05:00 PM   #12
thewolfe
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I made the same mistake with my build. Would never build oil pressure while cranking. I unscrewed one of the bolts on the bottom of the oil pump housing and squirt assembly lube up in there with a hose. You have to get it up in the gears. The next crank I had oil pressure within seconds.
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Old 04-11-2019, 05:19 PM   #13
blurred
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If you just did a fresh build you should have the oil feed off the turbo and pushing that oil into a bottle to make sure theres no crap in there, and also to ensure you actually have oil flow!

Do that first and crank it to ensure its all primed (and also to make sure you put oil in the car )

the attach the feed and fire it up.
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Old 04-11-2019, 05:44 PM   #14
pyraxv
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Quote:
Originally Posted by thewolfe View Post
I made the same mistake with my build. Would never build oil pressure while cranking. I unscrewed one of the bolts on the bottom of the oil pump housing and squirt assembly lube up in there with a hose. You have to get it up in the gears. The next crank I had oil pressure within seconds.


how did you reach all the way up there?
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Old 04-14-2019, 08:04 PM   #15
Gasguzziler
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Going gonna have to remember this
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