7.3 high pressure oil pump maintenance

I recently purchased a 2002 F-250 with 7.3 engine. I was searching the internet trying to get familiar with the maintenance of the engine. Some people say you need to change the 3 quarts of oil in the high pressue oil pump for the longevity of the injectors. Is this done when you change the engine oil? Some said the oil had to be pumped out.
 
The oil used by the injection system is the same oil in the crankcase. There is a 1qt reservoir that the high pressure pump draws from. This reservoir is filled by the main oil pump that lubes the engine. The main pump delivers more oil than the injection system can use. The excess just overflows on the timing gears. Just pull the drain plug on the oil pan, spin a new filter on it and go.
 
I drive a 95' F350 PSD Dually and haul a trailer
every day.

I used a 1 ounce animal nnalert syringe and windshield wiper hose to fashion a vacuum pump
to remove the oil from the high pressure reservoir
and fill it back up again.

I do this at every oil change.

The PSD injectors require clean oil to
have a useful life, when you buy a used truck
you never know how often the oil was changed.

Dirty oil is the primary cause of premature injector failure.

I change my oil & filter every 5000 miles.

I use Shell Synthetic T3.

Take care of your Ford and it will take care
of you ......
 
How many quarts does that engine take per oil change? The high pressure pump is supplied by the main engine pump, drain, fill, go, these are a 1/4 million mile engine just doing that.
 
Hi
There was a post on another forum here about this a week ago. this is what I did with my 99 on the first change ,when I got it. I sucked the oil with an electric pump and an adapter i made for it.
Every body and there dog basically said I was a b/sing A@#hole and had no clue what I was talking about. funny thing is my truck starts and runs like new , compared to flattening 2 new batteries starting. All I did was flushed 3 liters of oil through the reservior and heads, with the oil change, it ran better even with the second liter.
Glad someone else agrees with what I did.
Thanks for posting.
Regards Robert
 
I own a 99 Powerstroke, change oil reservoir every oil change.If you don t it will contaminate the rest of your oil.This is called injector maintenance.They are way too expensive to replace.
 
Unless I'm running extended intervals based on oil samples, I'm not going to worry about that 7% too often.

Good thing you're not around when I service the auto behind my Cummins.
 
Hi Thanks for the reply.
Im not planning every oil change, This truck was 1 careful lady owner and 99 idiots . The last one had never changed the oil only topped up when low buy the looks of it!. They took it to 525,000 kms! from 140,000 when they got it.

I figured it needed injectors and maybe starter, due to way over the poor mark starting, even on hot days, But found what guys said about this oil and the flush on you tube.
Just outta interest i tried it. Guess c@#p in the oil was my problem. This truck will now be getting regular service when due. It also now starts and runs like a fine Swiss watch. So hopefully problem over for the next 300,000 kms!.
oil and filter is way cheaper and quicker than injectors and starter change.
Regards Robert
 
WOW! I think I'd be tempted to drop the pan if I found it like that.

Well, at least dump a few gallons of cheap oil through it with the drain plug out.
 
Hi
Yeah it was not good bought the truck cheap knowing i Was gonna spend on it. well Truth is it ended up costing twice plus, what I thought.
This guy was an animal with maintenance. everything I looked at was worn out or damaged. Couldn"t even change the fuel filter without finding messed up parts!.
it runs so good and has good oil pressure I"m kinda reluctant to pull the motor out and drop the pan, with what else I found, I might not like it. I will cross the motor bridge if it quits, or just junk the truck and find an 03 7.3 to replace it.
The way this thing was abused it is sure a good advert for A 99 ford F250 super duty. Don"t see the 6.0 lasting this treatment.
Regards Robert
 
Maybe not every oil change,but it s only one qt. and not that hard to do so why not?I didn t know it should be done till I had 100,000 miles on mine and when I finally did draw that qt. out it was SLUDGE!!!Just my 2cts.
 

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