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  1. Rupert8

    FS: 1986 F250 6.9 IDI Long Bed

    Hi, Only owned this truck for 18 months but my work circumstances just changed significantly - not for the better... - and I need to sell it. Other than Craigslist and parking it in a local lot etc, any ideas for a decent online site that will likely move it quickly, in addition to the details...
  2. Rupert8

    Starts the dies - But......

    Hello all, 1986 F250, 6.9. I did a lot of work to eliminate air intrusion about six months ago or so. Olives, o-rings, new lift pump, checked all the fuel lines - and more. Truck ran great. Then about a month ago it started pulling a little air. I'd be driving and after an hour or so I'd get...
  3. Rupert8

    Fuel filter question

    Hello, In the middle of tracking down a mild surging issue I realized I hadn't checked the fuel filter to see if it was full. I unscrewed it and the fuel was all the way to the top. In a few seconds, however, it had gurgled some and dropped to around half-way as I looked at it through the...
  4. Rupert8

    Leaking fuel tank selector valve?

    Hello all, So - after working on this truck and ironing out a fair number of issues - thanks to the help of the members of this forum - I was driving to work a couple days ago patting myself on the back for getting all the 'key' jobs done and enjoying owning a reliable vehicle. Silly me. So...
  5. Rupert8

    Redundant belt pulley?

    Hi! Maybe a silly question, but poking around the belts on my 1986 6.9 IDI F250 I notice that there is an apparently unused space for a v-belt on a pulley right at the bottom. I circled it in the photos attached here. Um, should there be a belt here going somewhere.....? All the other...
  6. Rupert8

    Belt part numbers

    Hi all, I just know it's here on the forum somewhere but I can't find it - does anyone have the part numbers for the four V-belts on a 1986 6.9 F250? Just had the air conditioning belt snap (about a week after checking them, so good work eagle eyes there...) so figure I should replace them...
  7. Rupert8

    Turn signal / wiper wiring

    Hello, 1986 F250 6.9: Since my wiper switch was barely working and required lots of wiggling while driving (not safe...) I replaced it with a new part. It nominally has the intermittent function and therefore has a black ground cable so I spliced it on to the original part's ground cable. Or...
  8. Rupert8

    V-belt tension

    Hello, 6.9 IDI, no serpentine belt: I've just replaced my leaky fuel pump and vacuum pump. Putting the vacuum pump back I noticed some of the v-belts seem a little loose, even after a shop supposedly tensioned them six months ago while doing some other work. Since I may not know what I'm...
  9. Rupert8

    Return line question

    Hello, Still trying to find the source of air intrusion. O-rings etc all replaced. New return lines..... When I leave the truck for more than a few hours there is air trapped up in the air filter - when I bleed it only air comes out for a while. My question: The steel return line connection...
  10. Rupert8

    CDR valve - what is this part?

    Hi, What is the part circled in the photo? It's made of rubber. Going to replace the llarge 'O' gasket (also pictured) on my CDR valve but not sure what to do with the other part in the kit I bought. The CDR currently has a small o-ring going into the metal tube which then goes down into the...
  11. Rupert8

    Changed CDR valve and now trouble...

    Hello, I recently posted a separate thread regarding changing out the CDR valve on my 1986 F250 6.9. Job done, and the truck ran fine yesterday, ran very well, even, with the new CDR valve installed. I went to start it this afternoon and it turned over for a long time and just wouldn't start...
  12. Rupert8

    CDR valve replacement question

    Hi, Does anyone have a diagram - or series of photos - for CDR valve replacement? My reason for asking: I took my old one off yesterday (lots of oil inside, think it was the original) and there was a lot of broken plastic down below where it was. Not sure where this plastic came from. Really...
  13. Rupert8

    Oil pressure sensor location...

    Hello, I know there are multiple threads on this topic and I've read all the ones I can find but I just can't locate anything I believe to be the oil pressure sensor on my 1986 F250 6.9 IDI. I have a small(ish) amount of oil leaking from the flywheel cover area by the transmission and I'd like...
  14. Rupert8

    Knocking after injector change

    Hello all, I recently changed out the fuel injectors (code B) in my 6.9. Job went smoothly. Took it for a test run and it purred like a kitten (albeit a huge ugly diesel kitten). I was amazed at the difference: Engine ran smoothly when idling, also super smooth when working - at speed and also...
  15. 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...
  16. Rupert8

    1986 F250 C6 Torque Converter Drain Plug Location

    Hello all, New to Oil Burners - what a find. Great resource. Thanks already for the information I've benefitted from. 1986 F250 XLT Lariat 2wd 6.9: The transmission oil pan was leaking pretty bad so I changed it out. No issues. Since I just bought the truck I didn't know what transmission...

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