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.
Re: Regulated return, how many stories of regulator failing
I've never had a regulated return, but know those that have. A good number have had diaphram problems. Kinda why I went with shimming the OEM, FPR spring.
Re: Regulated return, how many stories of regulator failing
Almost 50k on mine from ITP and no problems.
__________________
2002 F-350 SRW Lariat,4X4, PSD with too many goodies to list. 182k and a very strong 7.3. SOLD
2008 F-250, SC Lariat, 4X4,Shortbed, Pueblo Gold/black, V-10, 4.10, auto, Delivered on 9/7/07, great looking rig. South Texas bumpers front/rear, Air Raid Intake System, Diablosport Predator, Magnaflow, Husky's, JJ's, Ford alarm/remote start, Marathon seat covers, Sirius, PIAA, Access cover, Weatherguard tool box, Rhino liner, Michelins, Duraflap mud flaps, Escort 9500i, MagHytec rear dif cover.
2007 Lincoln LT (wifer's grocery getter),Superchip,Magnaflow duels, K&N dropin, Leer Browning Special
1996 Ford Bronco EB; almost stock
2007 Kubota 900 RTV diesel with goodies. pappy's truck
Re: Regulated return, how many stories of regulator failing
Had mine on about 1 1/2 years and 50K miles. No problems so far. Like anything it can be made to fail. If you crank the pressure up then the diaphragm has to work harder. If you don't have a regulator that bleeds down then that also takes a toll. I bet that many that have had regulator failures had home made rigs with no bleed feature. When I bought mine, see signature below, the regulators were warrantied for life as is the entire kit. With a warranty like that, not sure if it is still offered, I was willing to take a risk. If I had a road side regulator failure I would just pull the hoses loose at the heads and plug them up then reinstall the factory spring regulator. Get a replacement under warranty and reinstall it. Probably take me a few hours. One thing to consider is the two stage injector pulse and the high cycles it produces over time. I will keep an eye on mine. That single mod did more to get the injector knock out of my truck than anything. However, I believe that the removal of the factory check valves is a bad thing so I left mine in. 106
__________________
2002 F250 7.3L PSD, bought new now at 195K miles, 4R100 Auto, Crew Cab, Short Bed, ITP Regulated Fuel Return system, ITP head to head SS oil cross over, Hutch in tank mod
Harpoon de tank vent, DIESELSITE Dahl 100 Pre-Pump Fuel Filter, DIESELSITE Return Fuel Line Cooler, DIESELSITE Engine Coolant Filter, DIESELSITE Auxilliary Transmission Cooler, DIESELSITE Gage Package, Pyro, Trans & Boost, Extreme Diesel AD injectors, Ford AIS Air Filter System, BTM straight through muffler, Moog Ball Joints, Rancho Shocks, Rotella ELC Coolant ,Stock Engine Program
Modified for I-Pod Connection
We b playing Scotland The Brave to Jimmy Hendrix
Re: Regulated return, how many stories of regulator failing
I replaced my LL in the #8 hole at the same time that I did the regulated return (DI version). That was nearly 4 years and 50K miles ago. No problems with the regulator (I run at 72 psi). I know there are many who have not changed out the LL injector but have a regulated return. It is not a requirement for this mod.
__________________
2002 F350 Lariat CC 4x4 Auto 4.10 DRW, DP-Tuner F5 live tuned stock, quiet, 40dd, 40, 60, 80 tow, 80e and 120r, B&W GN, BrakeSmart, 'pooned tank, tank and pre-pump mods, 2µ Dahl 100 filter, regulated return, BTS dual HPOP, AC singles with EDM 34 lpm nozzles, AIS, H2e, Spearco 6.0 IC, Hypermax 3.5" dp--> MBRP 4" 304SS exhaust, BTS tranny, 203º T-stat, Chevron ELC, coolant filter, Oilguard bypass with Schaeffer 9000, WranglerNW 200 amp alternator & Optima group 31 batteries, Nippon-Denso starter, SPA gauges, SteveRacer mods, Hella 80/100W 9007s, Hella Micro DE foglights, 1000FF driving lights, 220W backup lights, Stancor contactor, Michelin XPS Traction tires, X-Springs, Bilstein shox, custom bumpers but otherwise stock. Nov 30 '99 build engine with 16 K miles, Fluidampr, Comp Cam 910 springs, Melling LPOP and ARP headstuds.
Re: Regulated return, how many stories of regulator failing
10 months, 16,000 miles. I have it at about 67 psi. LL8 came out when the regulated return system went in. You should call Dennis Schroeder at ITP Diesel in Phoenix and discuss your concerns with him. I don't recall all the details now, but I recall being convinced that the ITP system is first rate and is designed to avoid the common pitfalls.
__________________
"Nothing in life is so exhilarating as to be shot at without result." - Sir Winston Churchill
May your road stay clear & dry, may your fuel never gel, and may you never be outsmarted by your idiot lights.
Re: Regulated return, how many stories of regulator failing
IMO, it's not bad, but its kinda like giving 50% effort. I had minor cackle, and minor idle knock, both appearing under differing condition (mostly higher elevation and hot ambient conditions). I wanted to pull the LL8 in order to the eliminate the idle knock. So I did the regulated return system so I could yank the LL8 and not increase cackle. If I wasn't ready to yank it, I wouldn't have done the regulated return. When I installed my first variation of the regulated return, idle knock was worse, until I pulled the LL8...then it was quieter than factory. IMHO, if you goal is to get your engine to idle and run as smooth (and proper) as possible, you should swap it out. My goal was simply to make the Powerstroke idle and sound like it should. I was not after more power.
BTW, I'm running a hybrid system, with parts from both ITP and DI, and input from Hutch (who doesn't get the credit he deserves, thaks Hutch). I tried various configurations (still had off idle injector rattle) and almost gave up when I found the shining light configuration for my engine: DI hose kit feeding the drivers side from the rear, no check valves, ITP regulator, and restricted orifices (0.062 in dia, one ITP, one custom made). Smooth and quiet with no cackle and no idle knock. As has been said over and over by others, it runs like sewing machine now. I'm running 65-68 psi on the regulator, which is about 70-73 psi in the rails before the restrictors (about a 5 psi drop across the restrictors for the flow rate, per Hutch). I have had the system this way for one year and am extremely pleased..not a single problem. There is no way I'm going back or changing anything. You have to read ALL of the posts in the archives to appreciate the efforts that everyone has put into the "regulated return".
Remember, not every engine exhibits the same symptoms, and each engine may respond differently. I have a friend with a 2001 X, all stock, and his (so far, knock on wood) has not displayed any appreciable idle knock or cackle. But IMO, with a manual trans, any idle knock and cackle will be more noticeable, as it is easier to load the engine without increasing rpm (such as pulling away from a stop).
__________________
2002 F250 XLT PSD 4x4 CC LWB 6spd, Line-X, Isspro pyro/boost/oil temp/oil pressure/water temp, BFG AT KO 285x75x16, Transferflow 57g tank, Snugtop Expo, Ford AIS, coolant filter, AirDog, 7500 lbs incl driver stock, 8300 lbs incl driver now Webshots photos
Re: Regulated return, how many stories of regulator failing
4 years and 55000 miles on my itp regulated return. replaced the LL8 injector with an ad injedctor at the same time. my truck runs really smooth. not one problem.
thanks dennis at itp!
johnnieboy ;-)
__________________
2002 green, f250 crew cab, lariat, 3.73, 4x4, linex, cyclone fan, bfgs 285/75 r16, isspro ttm, a.i.s intake, in tank/pre pump, racor prepump 30 micron filter, ad injector in #8, itp fuel regulator bypass,fuel cooler, titan 12000# hitch, aic, 3 gauge a pillar pod, magnefine filter, vandal alert, speed radio, stull grill, tru cool max tranny cooler, snugtop extra vision, banks monster exhaust
Re: Regulated return, how many stories of regulator failing
I took my check valves out. Seems to be something to help aerate the fuel if you leave them in. Most of the kits remove them. I think Bob Riley at dieselsite may replace them with a calibrated orifice to help even out the flow between the two heads but I have not seen the details of his new fuel system.
__________________
2002 F350 Lariat CC 4x4 Auto 4.10 DRW, DP-Tuner F5 live tuned stock, quiet, 40dd, 40, 60, 80 tow, 80e and 120r, B&W GN, BrakeSmart, 'pooned tank, tank and pre-pump mods, 2µ Dahl 100 filter, regulated return, BTS dual HPOP, AC singles with EDM 34 lpm nozzles, AIS, H2e, Spearco 6.0 IC, Hypermax 3.5" dp--> MBRP 4" 304SS exhaust, BTS tranny, 203º T-stat, Chevron ELC, coolant filter, Oilguard bypass with Schaeffer 9000, WranglerNW 200 amp alternator & Optima group 31 batteries, Nippon-Denso starter, SPA gauges, SteveRacer mods, Hella 80/100W 9007s, Hella Micro DE foglights, 1000FF driving lights, 220W backup lights, Stancor contactor, Michelin XPS Traction tires, X-Springs, Bilstein shox, custom bumpers but otherwise stock. Nov 30 '99 build engine with 16 K miles, Fluidampr, Comp Cam 910 springs, Melling LPOP and ARP headstuds.
The AutoGuide.com network consists of the largest network of enthusiast-owned enthusiast-operated automotive communities.
AutoGuide.com provides the latest car reviews, auto show coverage, new car prices, and automotive news. The AutoGuide network operates more than 100 automotive forums where our users consult peers for shopping information and advice, and share opinions as a community.
Linear Mode
