my oil pressure moves with my tach, once warmed up it sits near 0 at idle, and may go up to about 35 or 40 at WOT :dunno:
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Originally Posted by mazda/nissan
(Post 212215)
my oil pressure moves with my tach, once warmed up it sits near 0 at idle, and may go up to about 35 or 40 at WOT :dunno:
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i think i'm going to get another oil pressure gauge and mount it on my gauge bezel because i've heard the OEM ones can crap out... may also be my sending unit though
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mines at 80 cold, and sits 30-60 warm
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I've seen it before but can't remember.. Which wideband display is that?
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Where in the video (time,secs) do you see or hear knock. I don't have an ear or eye for this.
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it's the bouncing of the oil pressure gauge needle
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Originally Posted by magnamx-5
(Post 212130)
I see knock on the OP gauge as well as some low Oil pressure :td: you should get that taken care of man.
how can you see knock on a gauge the surely isn't working :confused: |
or: image how far that thing would be bouncing IF it were working :eek:
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Originally Posted by m2cupcar
(Post 212347)
or: image how far that thing would be bouncing IF it were working :eek:
just FYI, I dont hear any knock at all, so if it is knock it is subtle the wideband display is a $10 volt meter off ebay wired into one of the LC-1 outputs. The gauge moves ALOT more when the car is cold... :eek5: |
it could be trash in the sender (random flickering) - I had that BUT is it repeatable at the same rpm/load? IOW doesn't only flicker under load at 6k vs. 6k w/o load? That'd be an indicator.
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where is the best place to get a reading for oil pressure?
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for comparison? I would do it at that same spot, "apples to apples". Doesn't take much to unscrew the OE sender.
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The oe spot is the ideal location to measure pressure. And Scot i felt it better to be cautius in my advice as i did see the guage move abit and given the range it showed us there, i figured it was a significant variation to advise him off. Not that he would go around thinking he was 1000000000% safe and be hammering the shit out of his pistons with silent knock.
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Magna, I didn't see the gauge wiggle enough to indicate detonation. The OP is very low, though. My '94 is around 85 at cold idle, down to around 30 at normal warm idle, to 25 at hot idle. WOT oil pressure is never lower than 45-50.
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imma put a real gauge on it. What are the size/pitch of the threads for the stock location?
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1/8th bpt
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