'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 just picked up a 2000 F250 7.3 with 192,000 miles. this is my first PSD, but I've driven many diesels in the past. I have a few questions.
I cant hear or feel the turbo. Is this normal?
First tank of fuel I got 14.4 mpg in the mountains, with no load, at high elevations, 6000ft+. Does that sound about right?
The truck accelerates okay, but I expected more. It feels fairly sluggish. Is this normal?
I suspect the turbo is not working at it's full potential, or at all. Today I pulled and cleaned the EBP sensor and tube. No change. Next I pulled the plug on the EBPV. No change. Tomorrow I'll replace the EPBS, and see if that helps. If it doesn't help I'll try pedestal O-rings, and do a leak test.
Am I on the right track diagnosing the/any issue? Anything else to consider, or is my truck performing just fine?
The way to check out the turbo is to put a boost gauge on it. Your ear isn't that good a tool. If you're expecting to hear it whine like some trucks, a stock 7.3L won't do that.
You should also take off the intake and check to see if the turbo spins freely and has no end play in the shaft.
If you pulled the plug on the EBP sensor, and nothing changed, I wouldn't investigate that much farther on that system, other than to confirm that the EBPV isn't stuck. The crank on the valve shaft should be turned as far as it can go toward the actuator for the valve to be fully open.
Your mileage isn't that far off, expecially if you only checked one tankfull.
Mine make very little noise as well but I can feel the turbo about 1800-2000 rpm. I need a boost gauge as well. I have the Ford AIS air filter and that quiets things down more yet. I have the overpriced but great sounding 4 inch Banks monster exhaust from turbo back and a unknown (came with truck) chip. I almost bit the bullet and purchased the Garrett GTP 38R ball bearing turbo for the whine and faster spool up but I have finally learned that if "it aint broke dont fix it" is solid advice. The truck has 109k on the odometer and the factory turbo should have many years left. That said, If I develop a pedestal oil leak or a EPBV issue. off comes the factory turbo and on goes a GTP 38R.
Like Kevin said, get a boost gauge. I would also check the IC boots for leaking. Other than that, if you are looking at making it into a nascar truck, look into getting a chip
99.5 PS CC 4x4 SRW ZF-6
Triple Pillar Gauges; Fuel pres, Pyro, Boost
AE, Alldatadiy, and half a clue
- AKA "The Big White Truck"
The first part to be thrown at these trucks should be a PSD compatible scanner
PM please. No Visitor Msg if you want a response anytime soon
Today I did a leak test. It definitely leaks pressure. found a small leak at the wastegate actuator line and fixed it. The system still leaks a bit. should it be totally airtight? I sprayed 2 bottles of soapy water everywhere and can't find a thing. Is there a hidden leaky spot I should know of.
I also did the foil delete mod. I still do not hear the turbo.
yeah you wont hear the turbo with the stock airbox....i went to a diy tymar set up...with 4 1/8 aluminum pipe,i can hear my turbo now
2002 f250 lariat 7.3 220k(motor has 190k)
original 4r100 tranny....220k and counting
knock on wood....
red elc good for 150k
4r100 1-2 2-3 3-4sonnax accumulator valves,.427 sonnax line pressure mod valve
4.125"yes thats 4 1/8" diy tymar intake(size matters...lol)
AIH delete,ccv delete,zoodad mod,
4" exhaust no muff
built my own leafs for 4.0 of lift!!!!!!
18" xd bronze revolvers with 325 nittos to wrap them
isspro pyro and boost guages on pillar mount....