99 & up 7.3L Power Stroke Engine and DrivetrainDiscussion of the 99 & up 7.3L Power Stroke diesel engine and drivetrain in the 1999-Up Super Duty trucks and Excursions. No gas engine discussion allowed except on transmissions and drivetrain that pertain to all models. Please confine discussion of topics in this forum to those items that are specific to the 7.3L Power Stroke engine.
I was driving the truck tonite and noticed that the motor was not running smoothly. I also smelled oil. All of the temp gages were fine. Drove about 2 miles and all of the lights went dim and the truck died. When I checked the oil, there was nothing on the dipstick. Tons of oil in the vally and all over the bottom of the truck.
I am thinking that I blew a hpop plug and dumped all of my oil.
My question is; did I damage the motor or with out any oil to drive the injectors did the motor save itself?
Fortunately with the HEUI injectors, once the oil level drops approximately 8 quarts in the PSD, it loses oil to fire the injectors and the engine dies with pretty much no further damage to the engine. I wouldn't worry about it, just repair your oil leak, refill with oil and you are good to go again.
Former Ford Diesel Tech
ASE Certified Parts Counterperson, Automotive, Medium, & Heavy Truck Technician
1999 F250 XLT 4x4, Red, 7.3 6spd AWA5, 3.73LS rear, CCV Mod, APC Headlamps, Autometer C2 Gauges, (Boost,Pyro,Trans), 4" Turbo-back exhaust, XM Radio, AIS, ITP Regulated return, fuel feed lines, Airdog, & 4pos. chip. My Truck
2001 Ford Escort ZX2 - Black- 4cyl 2.0DOHC, 5spd.
1999 F350 4x4 XLT, CC/LB PSD, 6spd, Aluminum service bed, York Compressor Onboard air, CCV, Custom Intake & Exhaust, Strobes and a few other goodies
RIP Steph F. & Trista J., 4/27/07, you will be missed by many.
What BuddyM said, the injectors quit firing when your oil pressure drops below a certain point. When you loose 8-10 quarts of oil, your HPOP no longer can draw enough oil to fire the injectors. Basically this is a very good way to protect the engine from any damage. Remember that these trucks take 15 quarts, so you still had plenty for lubrication. Once you blow an o-ring on the HPOP, it only takes a few minutes at most to dump several quarts of oil, so your engine does not have time to loose lubrication.
I had this happen to me last summer, and my truck died after losing 10 quarts. It's been almost a year and there is absolutely nothing wrong with my truck. Don't worry, you are fine.
These trucks need oil and coolant level detectors so that if the fluids
drop below a certain point a warning indicator/alarm goes off in the cab
before any damage is done. Nobody wants to clean up an oil mess under
the hood either... You'll never get it all off and the oil will attract
all the cud blowing around, making for a messy engine compartment.
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I agree - I helped a guy out whoe goes about 15-20k between changes and has run low on oil 3 times!!!! We just filled it up and off he went...craziest thing ever....
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My dad used to have an '89 F-250 with the 7.3L IDI. He went 10-15K between oil changes, only washed it once, changed fuel filters every 30K or so, air filters every 50K if he was in the mood, and generally neglected it about as much as I've ever seen. He sold it with nearly 300K on the odo, and it ran like a champ. It's amazing the punishment that some of these engines can go through.
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