Andertusa
Full Access Member
I don't have my truck running yet, but what kind of oil pressure can I expect it to safely run, say maybe minimums and maximums?
On the other hand, the internet fuels an attitude of intellectual torpor. It's all too easy. Let someone else do the work and let me benefit from it. One person I know described the worst of the type as an information "Jabba-the-Hutt," a blob that sits behind a computer screen with an open maw and expects the information to be shoveled in. I'm not saying Andertusa is one of those but his question is smelled a little bit like it.
When I ask a question on the internet, I've "cracked the books" beforehand, at least to some minimum level of due diligence.
,To the OP, it looks like you already have a good answer, but for what it's worth, I see 10 psi at hot idle, and between 35 and 40 psi at freeway speeds. My pressure went down a bit after I put the turbo on; I'm guessing that the turbo feed is on the same gallery as where I tapped in for the pressure reading (using a mechanical gauge coming out the same place where the stock oil pressure gauge sender was)...in any event, 75K miles at those readings and all's well
,
Thank you for your reply, I was wondering because I was always under the impression that some diesels used the engine oil to 'pop open the injectors, well if that's the case, I would have thought the Oil pressure would be like HIGH, not a very gas-like 10-15psi.
Some diesels do use oil pressure to supply pop pressure to the injectors. These are described as "hydraulically actuated electronic unit injection" (HEUI) systems, and the 7.3L and 6.0L Powerstrokes are good examples of engines set up with HEUI; if memory serves, some variants of the DT466e also use HEUI, as do some Caterpillar engines (Cat designed the system). This was an early form of common-rail injection, allowing better control than the old setup that used a third camshaft lobe to pop the injector (which meant that timing couldn't be advanced as RPM's went up), but has since been technologically superceded by modern common-rail setups like what the '03+ Cummins, Duramax, and 6.7L PSD's use, which pop the injectors electronically.Thank you for your reply, I was wondering because I was always under the impression that some diesels used the engine oil to 'pop open the injectors, well if that's the case, I would have thought the Oil pressure would be like HIGH, not a very gas-like 10-15psi.
Nothing wrong with that we all have to start somewhere, right?I knew some did that, I didn't think it was the IDIs, but I'm still pretty new to these beasts and haven't taken anything apart( on these trucks).
...I don't know if the HPOP is electric or mechanical; someone who's messed with the newer engines could tell you more about it. But, hopefully that can give you a basic idea