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    Default evo oil pressure gauge reading low ?

    Got an evo oil pressure gauge , it reads 17-18 psi at idle which is 1000rpm , seems kinda low , earlier in the day when it was idling it read 70psi . The oil pump might be 10,000 miles old at the most sat for one year , the oil pressure is brand new its a pro sport evo . Also I am running breaking oil . Either my oil pressure sending unit is deffective or my oil pump is shot , engine was just rebuilt with brand new bearings , rings etc . BTW the oil pressure does goes up it says 40psi at 2000rpm when cruising??

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    Prosport you say? Go get a mechanical oil pressure gauge and see what you are actually getting.
    Quote Originally Posted by Big J View Post
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  3. #3
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    Default evo oil pressure gauge reading low ?

    Prosport isn't known for their accuracy... I'd follow Alex's advice. But that kind of jump in pressure sounds like a faulty sending unit to me. Were both readings taken at the same oil temp? Straight 30wt oil will show a bigger jump in pressure when hot/cold.
    Last edited by MisterNuts; 10-16-2013 at 05:06 PM.
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    Quote Originally Posted by MisterNuts View Post
    Prosport isn't known for their accuracy... I'd follow Alex's advice. But that kind of jump in pressure sounds like a faulty sending unit to me. Were both readings taken at the same oil temp? Straight 30wt oil will show a bigger jump in pressure when hot/cold.
    Yeah that's what I was thinking , its just that running a mechanical gauge with the hard line into the engine cabin is a pain in the ass lol . what brands are good gauge wise

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    I have the same gauge. Once fully warmed up at idle which is about 800 for me I'm at the 16psi range

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    Quote Originally Posted by tacoerick View Post
    Yeah that's what I was thinking , its just that running a mechanical gauge with the hard line into the engine cabin is a pain in the ass lol . what brands are good gauge wise
    Don't need to run an actual mechanical gauge into the cabin. Get one of these: Matco Tools ATG5K Engine Oil Pressure Tester | eBay

    Then test if you're reading the same as the gauge you have. If not, I'd say the sending unit is wack. I bought a cheapo autometer (50 bucks) and it's as accurate as my Matco tester. I wouldn't touch pro-sport anything even with a 10 ft pole. Just sayin...
    Quote Originally Posted by Big J View Post
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  7. #7
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    Quote Originally Posted by MoltenNismo View Post
    Don't need to run an actual mechanical gauge into the cabin. Get one of these: Matco Tools ATG5K Engine Oil Pressure Tester | eBay

    Then test if you're reading the same as the gauge you have. If not, I'd say the sending unit is wack. I bought a cheapo autometer (50 bucks) and it's as accurate as my Matco tester. I wouldn't touch pro-sport anything even with a 10 ft pole. Just sayin...
    Link to said autometer.

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    Quote Originally Posted by SoundEfx View Post
    Link to said autometer.
    Auto Meter 4327 Pro Comp Ultra Lite Electric Oil Pressure Gauge 2 1 16" New | eBay
    Quote Originally Posted by Big J View Post
    .....I'm good, but i'm not a car psychic


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    I have 3 prosport gauges. I don't seem to have any trouble from them

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    Would being low on oil cause the oil pressure to be low ? Went to check oil, was hard to tell since oil is brand new and clear but I think it was on the lower end of the dipstick . I put 4 quarts and a half . I do have the bsr kit

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    Yes if the pickup is not submerged causing starvation but I don't think that is your situation. Like I said go get yhe pressure tested by a tester to really know if what the gauge says is accurate or not. Remember that pressure is regulated by what you have. Clearances on the bearings can cause higher or lower readings. Viscousity and temperature can do it too.

    I have nothing against prosport. I just see them break more often than not. Plus autometers are made here iirc.
    Quote Originally Posted by Big J View Post
    .....I'm good, but i'm not a car psychic


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    Im sitting half way on the stick which is about half quart low. I never notice a pressure difference so I would have to say no. There was someone one here who did a test and found there pro sport oil pressure gauge a couple psi on the low side. I have noticed that I have have lower presuure with 5w30 but I tend to run 5w40

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    Quote Originally Posted by 2002blackspec_v View Post
    I have 3 prosport gauges. I don't seem to have any trouble from them
    I've only bought and installed one ProSport gauge, it was just inaccurate by a few psi. Interwebs searching showed that this is a common occurrence (at least their boost gauges). My mechanical Autometer was cheaper, responds faster, was made in the US, and cost less (although I don't have a way to compare accuracy).
    Last edited by MisterNuts; 10-16-2013 at 08:00 PM.
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    I have a mechanical prosport boost gauge. Seems to be good. Never tried to test if its off. Just wanted to have all the same gauges and they look cool

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    You can't really mess up mechanical gauges. The electric ones with electric sending units are the ones that are a bit sketchy imo.
    Quote Originally Posted by Big J View Post
    .....I'm good, but i'm not a car psychic


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    I also have the evo wideband as well. Like it way better then my old aem.

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    Really it's a matter of preference and luck of the draw.
    Quote Originally Posted by Big J View Post
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  18. #18
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    Quote Originally Posted by MoltenNismo View Post
    Yes if the pickup is not submerged causing starvation but I don't think that is your situation. Like I said go get yhe pressure tested by a tester to really know if what the gauge says is accurate or not. Remember that pressure is regulated by what you have. Clearances on the bearings can cause higher or lower readings. Viscousity and temperature can do it too.

    I have nothing against prosport. I just see them break more often than not. Plus autometers are made here iirc.
    My engine is brand new , clearances should be good i assume , engine was built by the best engine builder in the area , was recommended by many, broken oil pump??? idk we ll see , ima top the oil off tomorrow and check for oil leaks, and will wiggle some wires on the pressure sender . I know on my boost prosport evo gauge sometimes it will show i am under boost, when i am just idling .....and sometimes it doesnt even read..wtf

 

 

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