I have a leak in I think the fuel injector return lines and need to relace the o rings, return lines, etc to hopefully stop the leaks. I plan on getting the kit for this. Should I also relace the injectors while I am at it? It is a 1994 F350 7.3 Non turbo with 137k on it with original fuel injectors. How do you know when it is time to replace the fuel injectors?
There's really no set mileage. I've replaced mine twice in 240,000 miles. My original Ford factory ones were CAV (Engilish pieces of crap) that needed replacing at 74,000 miles with Stanadynes. The Stanadynes lasted until 206,000. I replaced them a few years ago to eliminate a rough idle. It's a good idea to have new ones pop and spray tested before installing. I did not and had a worse idle than before so I had to pull them, have them tested, all 8 were out of specs, sent them back, the new set checked out, been good ever since.
so I guess you are saying that it depends on how the truck is running? Running rough then try to replace the injectors? How about the injector Pump? Did you have to replace that yet? Thanks for you response!
so I guess you are saying that it depends on how the truck is running?
To a certain extent. There sure can be other causes but in my case I was pretty sure it was injectors which it was.
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How about the injector Pump? Did you have to replace that yet?
I would never replace mine, I'd get my existing one overhauled at an authorized Stanadyne pump shop which I did. Mine gave me trouble prematurely at fairly low mileage. In fact the pump shop owner asked me if maybe somebody had set the speedo back, which they hadn't, I bought the truck brand new right from the dealer. I'm convinced mine went out early at less than 100,000 because I fueled up once on a trip and the fuel was the color of diesel, but smelled more like gasoline. I questioned the station owner but the most he'd admit to was that that diesel tank had once been use for gas. I've got 165,000+ on the pump since he overhauled and calibrated it and hopefully I don't have to touch it for years from now. He said clean fuel, no water and they about last forever.
As far as I know the CAV injectors in my truck are original, but starting to show their age. Where would you guys recommend getting injectors from?
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1971 F250 Camper Special 390, c6 auto, 4x2, 63k original miles, rebuilt engine. It's had a hard life.
1984 F250 6.9 IDI, 4-speed manual, 4x4. Rolled so now its a project.
1985 F250 351W, C6 auto, 4x4. Dads truck.
1988 F250 7.3 IDI, C6 auto, 4x4. Bought it with new heads and rebuilt injection pump. Since then new parts include ball joints, brakes and brake components at all wheels including parking brake cables, fuel sending unit, injector return kit, belts, starter, batteries, and alternator. Sno-way 9'1'' v blade. Ready to make some money!
I've always got anything fuel related, fuel filters, injectors, drainback lines, from Diesel Injection Service in Lubbock, Texas. They've been a sponsor here for years, guess they still are. Good service, good prices, nice to deal with. They're the ones I got the bad Stanadynes from (not their fault) and they exchanged them no questions asked after I told them they were way out of specs.
Pensecola Diesel has new Delphi injectors for $152 for all 8 of em. Anyone had any trouble out of these?
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1971 F250 Camper Special 390, c6 auto, 4x2, 63k original miles, rebuilt engine. It's had a hard life.
1984 F250 6.9 IDI, 4-speed manual, 4x4. Rolled so now its a project.
1985 F250 351W, C6 auto, 4x4. Dads truck.
1988 F250 7.3 IDI, C6 auto, 4x4. Bought it with new heads and rebuilt injection pump. Since then new parts include ball joints, brakes and brake components at all wheels including parking brake cables, fuel sending unit, injector return kit, belts, starter, batteries, and alternator. Sno-way 9'1'' v blade. Ready to make some money!
When your truck starts to white smoke/blue smoke and miss and carry on the injectors need to be replaced or new tips installed granted the injectors are only 35 bucks a piece at your nearest parts house. I'd replace the O rings and the return lines first.
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Extended Cab 94 F250 XLT 7.3 IDI Turbo Diesel with a 2000 Powerstroke's intercooler, ZF5 tranny,dual disc clutch, 3 inch Lift, Eagle Alloy Wheels, 315/85/16 All Terrains, Perfect Body, Sony Head Unit, 12 inch Kicker Sub, Kicker Amp, 4 inch Turbo back to 6 inch stacks, custom intake, Best of All Mossy Oak Seat Covers Oh yeah.
I used Pensacola Diesel for my new injectors and return line kit. Ive had no problems with the the injectors, but the return line T's I had to replace due to them leaking. but don't think it was necessarily their fault...
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1991 F250 4X4 ex.cab, 7.3L, ATS Turbo, E4OD, shift kit, B&M trans.control, 33" Tires, leveling kit, home made cold air intake.
Pensecola Diesel has new Delphi injectors for $152 for all 8 of em. Anyone had any trouble out of these?
I bought new Delphi's on e-bay and they seem fine. Turned out the IP has a broken thrust washer so I probably didn't need them.
I have always had an occasional tick at idle, but it was there before and after IP rebuild and injectors and everything. I think there are just variances in the IPs.
With that many miles I would say do it since if you have the return line kit on there very long and then decide to do the injectors you will have to do the return lines, well the caps and o-rings at least again.
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When to replace Fuel Injectors?
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