6.9

  1. Rupert8

    How best to replace high-pressure power steering hose....?

    Hello all, I have a small-ish leak on the high pressure power steering hose, where it goes into the gearbox. I've tried tightening the connection up a little but no luck. It drips while driving, not when the engine is off. But I know it isn't going to get better and I don't want it failing on...
  2. Kraig

    89 f250 ac question

    Hello, I have a friend at church who is a missionary. His AC is out and I am endeavoring to fix it. Issues is, I cannot find the low side port. There is a port that has nothing on it on the accumulator but I can't find if that is where the low side port should be or where to buy one. He's...
  3. Rfuller102

    wiring harness routing on top of rad support ?

    I just finished rebuilding radiator support on my 87 f350 6.9 battery cable runs in indent on top of rad support I believe, Question is What is the correct routing of headlight harness? Any other wire routing information (pictures of tidy engine bay or factory routing illustrations) would be...
  4. hacked89

    Poll: Sleeved and Non-Sleeved IDI Engines

    Interested in gathering some data to graph for a reliability study. Take a minute to answer the poll for your current engine(s). I’ll allow multiple choices if you want to put down historic engines you’ve had. Poll is: how many miles as your engine lasted before it either died and got scrapped...
  5. CADHOWDY

    I Need Piston Rings

    So here is the scoop, I currently have a 6.9 block, heads, and rotating assembly ready to go from my machinist. (Build Thread; EBAY TURBO BUILD) The last pieces that I need are a set of .040 over size piston rings. We have been unable to source them from any of our suppliers and the...
  6. S

    Need advice on a 6.9 purchase

    Hey everybody I'm new here and in need of some guidance. I found an '87 6.9idi with 180K miles on it. The owner says that it has been bubbling coolant in the reservoir tank. He says it doesn't matter how long the truck runs for (meaning hot or cold it will do this) and says that the pressure...
  7. J

    1985 6.9 IDI Issues. NEED HELP ASAP

    Hello all, I have recently become the owner of a piece of history it feels like. I've been having some issues with this antique, and being the little bit of a mechanic that i am i need some help. I bought the truck knowing it needed some work(white smoke at idle, leaky injectors, etc.). I...
  8. E

    7.3 idi stalling while on load

    Hi there im new to the forum, I have a 1993 F350 idi that i purchased about 4 years ago with 112k miles on it. I installed a factory turbo system of another 7.3 idi right after i got the truck and it has been working beautiful for the past 3 1/2 years until around 8 months ago. The truck started...
  9. raeasler

    Rotella 15w40 vs Rotella 15w40 Full Synthetic

    Simple questions: Which one is better for the 6.9 IDI ? Any advantage of using one over the other ? Anyone use the Rotella of either "blend" ? Reason for asking is that I'm due for an oil change and I can get a gallon of Rotella 15w40 for $12.50. The Synthetic is obviously a little more...
  10. E

    Howdy from Western Oregon

    Hi guys. Glad to have found this forum. I'm the proud owner of an 84 f250 6.9 4x4. I've had this truck for a couple of years and up til now just drove her. Recently blew the head gasket on the passenger side and decided it's time to give her an all around spa treatment besides the head job...
  11. C

    Differences between the 6.9 and the 7.3.

    I have an opportunity to buy a couple of 7.3 IDI engines. In a previous post I asked about pulling the heads off of my 6.9 in the truck. I bought an ARP headstud kit, a head gasket kit and an intake manifold gasket. I know that the head studs won’t interchange because of thread size. Might the...
  12. C

    Pulling heads from a 1983 F250 6.9

    Well it seems as if I may have had a head gasket blow on my 83-6.9. Something poked a hole in my radiator as I was driving it and started to lose power and when I stopped it was blowing the coolant out of the hole in the radiator. I let it cool and refilled it and restated it but now I have a...
  13. B

    Broken rocker bridges

    I have a 1983 6.9 idi that won’t start anymore. The I’ve narrowed down the cause with all the troubleshooting I know. This all started when I was testing the 4x4 after I bought it. I drove through what I thought was a puddle and ended up being a 5 foot pond. Engine hydro locked. I dropped the...
  14. BobbyBino

    85 F250 6.9 New pump Need PS pulley

    [85 F250 6.9] looking for PS pulley (hard to find). Another truck match?Napa nope
  15. FoolhardyIDI

    6.9 and 7.3 exhaust

    Aftermarket exhaust crossover pipe for 6.9ih and 7.3 idi. I'm in Tempe AZ. $60 pick up only. 2 1/4 inch downpipes into 3inch collector. Put a Banks turbo onto my truck so no longer need this part of the exhaust. Four eight zero-two five one-five six three one. Please text me if interested. Thank...
  16. N

    1 dead hole and 1 with low compression

    So we have a 6.9 in a International 1654 small straight truck. Trouble was a few weeks ago we started it up, it was cold out, and immediately we hear a miss. Motor smoked under a load, and idle, and on hills. We were low on power, but there was no horrible knock sounds grinding etc. So we...
  17. N

    6.9 IDI in International 1654

    Hi Everyone, New member here with a different question. I've been reading a lot on the 6.9/7.3 forum and trying to gain general info. We have a 1986 International 1654 with the 6.9L motor in it. As of last week we have a dead cylinder and will now be doing motor work (valve work we think...
  18. Griffs toaster

    85 E350 motor mount questions

    Hey there. Wondering if anybody can shed some light on this. I have a 6.9 IDI that I plan on installing into my 1985 Quadravan. Question is that on the drivers side motor mount to the frame it seems like there is a adapter to the frame. Can anybody confirm this. I have done some research and...
  19. Griffs toaster

    Hello IDI people

    Hi there. Name is Griff. Kinda new to the IDI world but got some plans for my 1985 quadravan (gasser) and a 6.9 IDI that I would like to install in it. Hopefully some of the guru's can help with some questions I will have on the way. Thanks
  20. M

    6.9 rebuilding tips

    I am rebuilding my 1985 6.9 IDI. I am looking for any tips, warnings, or suggestions for modifications. I am planning on a mostly stock rebuild. My priorities for this job in order of importance are: 1. Dependable and long lasting engine 2. Do it myself 3. Save some money 4. Improve gas mileage...
  21. Vanzal15

    6.9 IDI 15 5/8 Radiator Replacement

    All, Wondering if anyone has an alternative to the $400+ Pep Boy's Spectra radiator for a drop in replacement. I hear I should go aluminum but have not been able to find one that has the 15 5/8 element height my truck has stock. Amazon and Ebay searches are all over the place. It looks like...
  22. F

    87 F-350 Crew Cab,6.9, 5 speed ZF, 2wd, $3200 OBO

    Odometer shows 43,***, believed to be 243,***. Runs excellent, with many newer parts, including injector pump, glow plugs, injectors, block heater, batteries, radiator and more. Original 3 speed auto was swapped for 5 speed ZF from 89 F-350, with a partial rebuild (some bearings and...
  23. Wyatt Bird

    White smoke

    Hi, I’m new so I hope I’m doing this right, but I have a 1987 f250 6.9 with 1st gen banks turbo. I’m having white smoke come out when it’s idleing and when I give it gas it puts some grey and white smoke, sometime I get a little black. Any ideas will work. Thanks
  24. 86 Ford F-250 4X4

    6.9 Diesel starts and will only runs for a seconds, billows white smoke.

    I have a ’86 Ford F-250 6.9 diesel that has less than 18,000 miles that I bought new. I had not started it in several years and when I turned the key the fuel gage showed empty on both tanks. I tried starting it and it would not run. I thought either the gage was broken and the fuel was bad or...

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