| [ Total Views: 1293 | Total Replies: 6 | Thread Id: 84841 ] |
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 Bugaru03
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| posted on July 16th, 2010 at 10:23 PM |
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Oil pressure problem!!!
Few help because I’m going to be crazy
After a new rebuild that I had made in EJ20NA 125hp i thought it’s time to place an oil pressure gauge in order to see if everything is normal.
I took from friend a sgear gauge including valve, working at 7bar.
All good up to here!
Then I cold start the engine and see oil pressure 6.0bar!
Beautifully I say…then progressively and without having oil temperature gauge, the pressure starts to fell progressively (with exterior temperature
at 37c) and after 15-20 minutes reached in 1 bar and afterwards.................. the needle stuck in absolute zero!!!!!!!!!!!!
Warning oil light has not turned on and when I accelerated the gas pedal, for example the pressure went up until 3.5bar and had roughly 3,000 turns.
When however I had no gear in transmission or I stopped the car then the needle with difficulty it is above zero or zero.
What the fu$#%^@k is going on here, with introducing brand new OEM Subaru oil pump and semi synthetic oil 10W 40 Fuchs.
Any suggestions please?
Rgrds,
Jim
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seagull
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| posted on July 17th, 2010 at 12:41 AM |
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incorrect maching & bearing clearances
oil pump screws loose on back of pump , the valves jaming with debre ( I understand its a new pump )
o,rings missing from the two casings halfs
modified oil pick up ? and sump ?< size of sump ?
if its not the pump , you will need to strip the motor down
Looking for that special lady : PM me for coffee & cake
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Jak Rizzo
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| posted on July 17th, 2010 at 10:20 AM |
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I would screw a mechanical oil pressure gauge in the oil pressure sender, the type that mechanics use. Thats what I did when I had my engine rebuilt
years ago. Don't rely on your in car electric item. Use the mechanical type, then u can also claibrate & check your electric gauge.
Hopefully it's as simple as the gauge playing up.
http://buy1.snapon.com/products/diagnostics/mt37a.asp
regards
jak
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Bugaru03
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| posted on July 17th, 2010 at 11:54 PM |
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Thanks Jak! That's exactly i have in my mind to do.
Let's see what numbers i get....
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Bugaru03
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| posted on July 26th, 2010 at 06:42 PM |
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Just for history....i have attached a new oil mechanical gauge and i get the same numbers...
But then a big relief came up when i've read the subaru manual and see the numbers given from the factory..
at idle with 80c oil temperature in 600rpm it says 1bar = 14psi.
So, i dont think i need to worry!
New nippon oil filter and semi synthetic oil 15w 50 introduced.
Despite of that what are the numbers you guys get in your scooby??
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Joel
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| posted on July 26th, 2010 at 09:19 PM |
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I'm Surprised the warning light switch is only set to 2.1psi 
even the stock vw one is 5psi
anyway both of mine ran about 20psi at idle and 70-80psi at 3000rpm at 80c
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Jak Rizzo
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| posted on July 27th, 2010 at 06:35 AM |
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| Quote: | Originally
posted by Joel
I'm Surprised the warning light switch is only set to 2.1psi
even the stock vw one is 5psi
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thats why I run a 2.1L wasserboxer pressure switch, it screws straight in.
regards
Jak
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