Ford 7.3L Power Stroke (1999-2003) :: Injector Installation - Torque Hold Down Bolts
I have been reading here about alternate methods to torquing the hold down bolts for the injectors. This winter I replaced my old stock split shots with new alliant single shots. I installed the injectors into a cold engine and torqued the hold down bolts to 10 ft lbs. I did not ever go back and re-tighten.
Is it suggested to go in and re-tighten the injector hold down bolts to 10 ft-lbs after the engine has been heated up and cooled down? What are some symptoms of a loose injector? I am imagining premature wear on the injector cups, low compression and maybe some mixing of oil into the combustion chamber.
Did just throw the injectors in and go back later to retorque only to find they were all fine or were some loose?
Ford 7.3L Power Stroke (1999-2003) :: Injector Hold Down Bolts
Would it be a good idea to change the injector hold down bolts when I do the injector o-rings? They have never been out at 333,000 miles.
Plan on doing glow plugs, injector wiring, valve cover gasket's, intercooler pipes and the dreaded oil cooler.
Ford 7.3L Power Stroke (1999-2003) :: HPO Torque Spec And Front Swaybar Bushing Replacement?
I'm working on a couple of repairs and have encountered a few questions:
1. Are the bolts supposed to come out of the top of the end link? Mine don't so I don't know if that's the way it is or mine are so far gone that they are frozen in the sleeve. My poly bushing kit does not have any new bolts so I'm hesitant to lay into it with a 10 ton press and ruin the bolts (I don't know how much they are from Ford to buy or if I can even buy them).
2. HPO rail plug. I'm removing my HPX as I'm tired of it leaking (hopefully when my HPOP comes back as a T500 I won't need it anyway). I've seen 33 ft-lbs and 96 ft-lbs. As I go towards the 96 ft-lbs it feels like I'm going to strip the threads out so I backed off and they are at 33 ft-lbs now (I don't need that headache and my wife would go through the roof). I got the ones from Riffraff as I misplaced the ones I took off 8 years ago (go figure). The HPO line connections to the head (or pump for the matter) are 19 ft-lbs. I use Loc-Tite on those but both have an o-ring (which provides most of the seal) so I'm not to keen on gronking the rail plug.
3. I'm also replacing both HPOP gaskets. I know that the HPOP and reservoir mounting bolts are 18 ft-lbs (from Ziggy. in the tech sticky) but is there a spec for the cover bolts too? I know the gasket provides the seal but I'd like to make sure that the force is distributed evenly across the gasket (Sous isn't the only OCD person around).
Hopefully this fixes most to all my oil leaks (still have to tackle the oil cooler). The valley is covered (as well as the front of the reservoir) and there is a lot of weepage on the paper towel test. There are years of buildup everywhere and will take a few tries and several cases of Simple Green to see the metal again.
Ford 7.3L Power Stroke (1999-2003) :: Water Pump Lower Elbow Bolts Torque Specs
I read 18lbs for the water pump but it took a cheater bar (perhaps due to corrosion) to get the water pump lower elbow bolts off.
On reinstallation, what should the lower elbow bolts be torqued to? Checked the sticky (Ziggy's Torque Specs) but didn't see the specs for this item.
Ford 7.3L Power Stroke (1999-2003) :: Turbo To Pedestal Bolts Really Hard To Break Loose
Are we supposed to put anti sieze on the turbo to pedestal bolts. They were really hard to break loose when I pulled it Cheater bar tight. 18 ft. lbs sound right ?
View 2 RepliesFord 7.3L Power Stroke (1999-2003) :: 2001 F350 - Power Loss / Hard To Hold The Speed?
I drive a new to me 2005 F350, he has a 2001 F350. While we were talking he said he didn't think his pickup had the power it should have. He pulls a 5th wheel camper that weighs around 8000 pounds fully loaded. He said it takes a couple of miles to get to 55 mph, and it is hard to hold the speed. It doesn't have the power it did when he first got it last year. He was told that a diesel is slow getting started. He rode with me in mine, when I dropped it about half throttle to pass a slow car he said he could tell mine had way more power.
His check engine light is not on, it starts good both when hot and when cold. It runs smooth, no miss as far as I can tell listening to it. What are some common issues that could cause this? He did just change the oil and fuel filters, not sure about the air filter. He said the power loss came before he serviced the engine, and did not improve after the fuel filter change. Where to start? He was also told to check the filter inside of his fuel tank, so he is getting ready to drop his tank.
Ford 7.3L Power Stroke (1999-2003) :: Hard To Start When Cold With Leaking Injector O-Rings
Truck is a completely stock 2002. New injector o-rings, glow plugs, valve cover harness, and injector cups a year ago... all motorcraft parts. New batteries and starter in the last 6 months.
I've checked the GPR both at the relay and harness got power all the way to the valve cover harness on all 8. Injector buzz test sounds okay as well.
Had a stuck IPR issue a few moths ago that caused a CEL and died while running. Took apart and cleaned the IPR and CEL is gone truck runs great once started and has correct IPR pressures in all RPM ranges.
Truck runs great once it is started and is not sluggish until warm like when it was hard to start when cold with leaking injector o-rings.
Ford 7.3L Power Stroke (1999-2003) :: 2002 F350 - Hard / No Start At Cold - Injector Buzz
This is an issue I started chasing after having all the injectors replaced on my aunt's F-350. We had them replaced due to hard/no start on cold (dealership told her they needed to be changed). Unfortunately, I did not get the buzz test results before changing the injectors.
So far that has been replaced:
Injectors
ICP (was leaking)
IPR
both UVCH
IDM (twice)
The issue we are having right now is that only 2 injectors (#6, #7) buzz properly. Initially when we changed the injectors, it did start but didn't seem to run quite right. We did the buzz test and at that time and injectors 1,3,5,6,7 would buzz strong but the rest were weak. After some forum lurking, we suspected that the IDM was faulty. We purchased a refurbished one and after we changed it, only injectors 6,7 would buzz strong. Thinking a faulty IDM was sent it back for a replacement. While waiting, we decided to put the old one back in figuring it would go back as it was before but only 6,7 would buzz strong. We receive the second IDM and same thing, only 6,7 buzz strong. We did a continuity test from the IDM connector and they all get 2.7 ohms (it was an older multimeter so not sure if being .1 under the 2.8-3.6 range is bad).
What I did next is use the uvch external pigtail to test the injectors. I plugged the extra pig tail into the uvch and then the ends of the wires into the plug of the upper harness. Afterwards, I would swap a different injector wire (on the pigtail) to the #6 injector wire (on the upper harness). Whatever injector that would go to #6 would fire correctly. So I know that the injectors themselves are fine. I am suspecting the wiring harnesses (upper/lower) but the continuity test would say otherwise. We also do not get any fault codes except for the EBP occasionally (waiting for a new one). I am lost on what to test or look at next.
Ford 7.3L Power Stroke (1999-2003) :: Starting Hard And Run Really Rough For About 10 Minutes
I have had my excursion for almost 4 years, I love this truck. but lately we have been having issues that we haven't been able to figure out. First it has about 390K miles on it.
I ALWAYS have to plug it in. it could be 90 degrees out and I still have to plug it in. if it Is plugged in normally it will start fine. but then when I go to drive it, it wont have any power until I get like 2 miles down the road. you can push the pedal all the way down and it will go like 10mph. but once it warms up its fine. if I forget to plug it in, I will have to plug it in for about 2 hours and then it will start hard and run really rough for about 10 min. And it will blow greyish smoke out the exhaust.
But now I'm having the issue of keeping it running. it will start and run for 5-15 min and then quit and I have to wait anywhere from 10min - 1 hour to start it again.
Ford 7.3L Power Stroke (1999-2003) :: Hard Starting In Cold And High Altitude
We're currently RV camping in the Wyoming Wind River Range at 8500 ft and is getting to freezing at night. The past two mornings the truck has been very difficult to start and I got quite a bit of smoke. This morning it took two or three tries but I got it going.
View 3 RepliesFord 6.0L Power Stroke Diesel :: Injector Spool Valves Blow Off Bodies - Broken Bolts
While diagnosing a low power and misfire condition on my 04.5, I was measuring coil resistance at the injector connectors. Found 1,3,7 had open circuits for one of the solenoids. 3 bad injector coils and no codes, no contribution codes... Why?
Anyway, pulled it apart to find the spool valves of 1 and 3 came out with the oil log the small bolts that hold them to the bodies had broken off. #7 only 1 bolt had broken off and the other was there but loose.
I got this truck with no history, and Had a variety of issues, like a bad fuse box that caused a no start, massive amounts of water in the fuel, and it had sat for 6 months untouched before I got it. I took care of the previous problems search for my previous posts if interested.
So what caused the spool valve to get blown off the bodies? I'm not sure if these have been rebuilt or ever removed, truck has 135 k. Could it be the water in the fuel that seized the intensifier piston?
Ford 7.3L Power Stroke (1999-2003) :: 2002 F250 Stalls Out And Cranks Hard For 7 - 10 Seconds Before Starting
Truck stalls out and cranks hard for 7-10 seconds before starting if I don't let it warm up adequately before I start driving. Transmission is hesitant to shift. Also, white smoke comes out exhaust if it's cold and I get in the throttle too much or if I hit 70+mph.
View 2 RepliesFord 7.3L Power Stroke (1999-2003) :: Exhaust Manifold Bolts Broken?
Just bought a 03, the seller showed me a exhaust leak. I found a bolt broken off, flush with the head. Looked at the passenger side when I got home, that side leaks too, and found one broken off bolt there too. Question, are these easy to do? As in, I have extracted broken bolts before, but they where on my V10 and I could just weld nuts to them and they came right out.
View 14 RepliesFord 7.3L Power Stroke (1999-2003) :: Manifold To Up-Pipe Bolts Seized
So I had recently developed a leak in the up pipes behind the collector. Big surprise, right?
Well, a 6-point socket was spinning on the collector bolts (probably from rust) so I decided to cut the manifold to up pipe bolts. Got the up pipes off/out. Well after and <acronym title="Manifold Absolute Pressure">MAP</acronym> gas torch, I can't punch ANY of the bolts out.
There is little to no room to get to the bolts. (I have the down pipe removed.) At this point I'll try a few more doses of hot wrench and PB Blaster, but if I have to do the manifolds I'll just pull the engine, since chances are there will be at least one stuck bolt there, too. I really don't want to go that, but eventually I'll need to install my new oil pan anyway.
Ford 7.3L Power Stroke (1999-2003) :: Rounded Off Thermostat Housing Bolts
Tried to flush it and got as far as draining everything. I can't hook up my T and begin the flushing process because I can't remove the thermostat. I have a buddy who can get the bolt out but I'd have to be able to drive the truck to him. I've tried just about everything to remove it. I did manage to find some replacements for when I do get the last one out though .Is there a way to still flush this thing like maybe just hook up the hose to the t and run the engine with the heat on to open the thermostat?
View 14 RepliesFord 7.3L Power Stroke (1999-2003) :: Replacing Injector Cup?
im in the process of replacing the injector cups and i knew this would happen since the whole process went way to easy up until this part. I am using Clays remover kit and it will not remove the cup. I do it according to the book and it just keeps popping out of the cup when i try to remove
View 14 RepliesFord 7.3L Power Stroke (1999-2003) :: Bad Injector Sound?
Now ive got a tick tick tick tick sound from the engine. The tick increases and decreases with rpm and is present at idle. If it were a gasser i would say a lifter, honestly it kinda reminds me of a sewing machine lol.
Whatever it is as long as its not serious and my engine is solid im ok w it, I bought this truck knowing I was going to have to put work into it, I just didn't know work was going to go fall one after the other week by week from the day I got it....the previous owner must really have neglected this thing....
Hard to hear it over the sound of the engine, but its there, and is slowly getting worse
[URL]
Ford 7.3L Power Stroke (1999-2003) :: Coolant Seen While Injector Out?
Although not certain, I *thought* I saw coolant run into the front drivers side injector hole when the injector was out and I leaned on the radiator hose. I had knowledge t pull them and changing the orings who were initially concerned then not concerned after looking closer.
Either I made a mistake in what I thought I saw on my first experience with injectors, or there really is a problem that I didn't know enough about to address at the time. So I opened this thread to get more info and stop hijacking 67speeda's thread, found here: [URL] ....
As per recommendations, I will check my coolant bottle for any fuel, oil, residue, etc. I am also going to reach out to my buddies and see if they saw a problem with coolant, too, or they realized it wasn't coolant and I didn't take note of it ...
It was a REALLY LONG day and my ability to concentrate had begun to slip quickly (health issues), so it's possible I missed something there. So IF I saw coolant going into that cylinder with the injector removed, how bad would that be? I thought it came from pretty high up and ran down where the injector sits..
Ford 7.3L Power Stroke (1999-2003) :: 2002 - Engine Lost Power - Injector Harness?
So after hitting a pothole, it would seem like half the engine lost power, after some searching around, i found that i would most likely be the harness inside the valve cover that has lost connection.
Its the right side, so i would need to take of the turbo pipe, and probably something else to get to it.
Since i'm doing this job, what to check out along the way? I want my 7.3 to be as reliable as possible.
I will probably ask some questions along the way, it can be a challenge sometimes to own a car that not many mechanics are familiar with, but as i have read online, this should be a very straight forward fix.
Can the harness be upgraded so it doesn't happen again? Its an 02