What does your oil pressure gauge read

[Goobs]

I have the 8.3 cummins turbo and at idle it sits around 20 and when driving it's about 50. Is that a normal range?

thanks

goobs

 

[Suprman]

Did you check the engine oil level via the dipstick? That sounds about right. Many of them don't show much at all for pressure at idle.

 

[98G]

Spec is 8 psi at hot idle, but most show more than that.

What yours shows correlates to what I usually see on good ones.

 

[Truckoholic]

Spec is 8 psi at hot idle

That would scare me! ha ha But yeah, I have seen other guys post that their 8.3 idle oil pressure seemed really low. My NHC250 in my M925A1 idles hot at I think 25psi, and about 50-60 psi when driving.

 

[98G]

That would scare me! ha ha But yeah, I have seen other guys post that their 8.3 idle oil pressure seemed really low. My NHC250 in my M925A1 idles hot at I think 25psi, and about 50-60 psi when driving.

The NH250 oil pressure spec is higher than the 8.3. The TM calls for 15 psi at hot idle on the NH250 although typically they do run more than this.

I'm with you, I like to see 40-60psi at a cold start up.

 

[SLOrazorsedge]

I've got two 8.3's, both idle around 10 psi at hot idle. Scared me too, only comfort was having two of them showing the same operating oil temp

 

[Goobs]

Cool thanks guys. Yeah, I was driving it and for some reason I looked at the pressure at a stop light and it was low and then driving it was in the 50 range and kinda freaked me out a bit cause I hadn't really noticed it at idle before.

Ive never owned a diesel let alone a military vehicle before so its all a learning process.

Goobs

 

[74M35A2]

My 8.3 is just a needle-width above 0psi on the factory gauge at hot idle. But, when checking this with a mechanical gauge, it reads much higher, like even close to 30psi if I remember correctly. The military electric gauges suck, and suck even worse when hot, in my personal opinion. If I could figure out how to back-light a mechanical gauge, I'd chuck my electric gauges up in the air and crank them with a ball bat on their way down.

As far as the factory gauges go, if it is not on 0psi, you should be OK. Know your oil level.

 

[frank8003]

You didn't even say which flavor lube oil and it is cold or at running temperature F°