Low Oil Pressure at Idle
07-01-2007, 05:36 PM
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Low Oil Pressure at Idle Yesterday my oil pressure dropped quite a bit. 15-20# hot. It was just above the red. It was a pretty hot day.
Any idea what it could be? Car runs fine and pressure rises when I rev it.
Today I started it and it was 30# cold.
Any idea what it could be? Car runs fine and pressure rises when I rev it.
Today I started it and it was 30# cold.
07-02-2007, 07:51 PM
#6
I have a similar problem still not really sure what it is. New engine, suddenly happen after hitting rev limiter but really the engine probably didn't see more then 7k. What I notice and maybe yours is doing the same thing when I get on it and go through the gears the pressure drops to almost nothing and as soon as I leave off it goes back up to the low15-20 idle. I am debating trying the oil pump before I pull the engine put the pump was new with the engine.
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07-02-2007, 08:15 PM
#9
What oil filter you running?? I always use KN due to its high flow and excellent oil pressure. I had a similar problem when I used a FRAM (junk) filter. Pressure dropped to same levels as you. When I changed to KN I run 50 cold...40 hot.
07-02-2007, 08:18 PM
#10
Rod Bearing , Oil pump!!!
My friend had the same problem with his new 408ci engine it turns Rod Bearing it started just like you Check it out fast dont be sorry later.
Sorry I know its a new engine I saw vid of your old dying.
Hope nothing major.
My friend had the same problem with his new 408ci engine it turns Rod Bearing it started just like you Check it out fast dont be sorry later.
Sorry I know its a new engine I saw vid of your old dying.
Hope nothing major.
07-02-2007, 08:30 PM
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Originally Posted by chaman
What oil filter you running?? I always use KN due to its high flow and excellent oil pressure. I had a similar problem when I used a FRAM (junk) filter. Pressure dropped to same levels as you. When I changed to KN I run 50 cold...40 hot.
07-02-2007, 08:31 PM
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Originally Posted by venom ws7
Rod Bearing , Oil pump!!!
My friend had the same problem with his new 408ci engine it turns Rod Bearing it started just like you Check it out fast dont be sorry later.
Sorry I know its a new engine I saw vid of your old dying.
Hope nothing major.
My friend had the same problem with his new 408ci engine it turns Rod Bearing it started just like you Check it out fast dont be sorry later.
Sorry I know its a new engine I saw vid of your old dying.
Hope nothing major.
I hope not. I have not raced it or used the Nitrous yet.
I also sent an email to my builder to see what he thinks.
Last edited by Ed Blown Vert; 07-02-2007 at 08:41 PM.
07-02-2007, 08:35 PM
#13
My car had an AC Delco when I got it. It ran at aprox 25 to 30 hot....when i made m first oil change my pressure wen to hell. After some research i went with a KN and the pressure became a healthy 40 to 45 hot. I believe is because of the low restrictive characteristics of the KN filter that improves overall pressure in the oiling system...it dont hurt to try!
07-02-2007, 08:41 PM
#14
Originally Posted by chaman
What oil filter you running?? I always use KN due to its high flow and excellent oil pressure. I had a similar problem when I used a FRAM (junk) filter. Pressure dropped to same levels as you. When I changed to KN I run 50 cold...40 hot.
Last edited by NC98Z; 12-05-2009 at 06:45 PM.
07-02-2007, 08:42 PM
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Originally Posted by chaman
My car had an AC Delco when I got it. It ran at aprox 25 to 30 hot....when i made m first oil change my pressure wen to hell. After some research i went with a KN and the pressure became a healthy 40 to 45 hot. I believe is because of the low restrictive characteristics of the KN filter that improves overall pressure in the oiling system...it dont hurt to try!
07-03-2007, 08:45 AM
#16
Originally Posted by NC98Z
And if that don't work I'm going to park the bitch under the garage and go by it every Sunday and poke it with a stick.
The K&N filter can be had at Autozone, Advance, etc. Roughly same price as Mobil 1 filter, but I have no idea the part number off the top of my head. I wanna say I remember reading a thread where a guy changed the sending unit and got back some #s, maybe it was reading all screwy?-J
07-05-2007, 07:43 PM
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What should I hear if I spun a bearing? I m guessing a bunch of noise. 
The engine seems to be running fine. He wants me to try a heavier oil and see if he pressure drops after a 1000 miles or so.
The engine seems to be running fine. He wants me to try a heavier oil and see if he pressure drops after a 1000 miles or so.
07-05-2007, 07:55 PM
#20
Originally Posted by Ed Blown Vert
What should I hear if I spun a bearing? I m guessing a bunch of noise.
The engine seems to be running fine. He wants me to try a heavier oil and see if he pressure drops after a 1000 miles or so.
The engine seems to be running fine. He wants me to try a heavier oil and see if he pressure drops after a 1000 miles or so.
Does it knock at all when you first start it up? When rod bearings start to go, they usually will knock for just a couple seconds when you first start it up, until it gets pressure and then the knock goes away. Thats a sure sign the bearings have too much clearance.