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  1. 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...
  2. 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...
  3. Rupert8

    Turn signal / wiper wiring

    Oh, this is interesting. No, my wipers just stop whenever I turn the switch off, I presumed these old trucks didn't have the wiper park feature. I'll look into this, I thought that would be part of the wiper switch if it were present, so, while disappointed, I thought it was a newer vehicle...
  4. Rupert8

    Turn signal / wiper wiring

    Sorry for the delay, all - had a family issue come up then got sick, possibly linked! Fun times. But back at it. Well.... I checked all the grounds that I could get to/find and they seemed fine. I read everything above multiple times - it is really appreciated. Then I did two things. I checked...
  5. Rupert8

    Turn signal / wiper wiring

    Thanks again. Will be digging in to this later today and (probably...) tomorrow. This information is golden. One thing I found is this box which seems to be wired into the wiper wiring. Seriously. Think it might be from the CB radio I removed after I got the truck to make room for some gauges...
  6. Rupert8

    Turn signal / wiper wiring

    One question I keep coming back to - since the 4-way hazard flashers are on a separate relay and circuit, is there any way of isolating the ground etc for the turn signal circuit? The more I look into this, I really don't think I changed anything when installing the wiper switch. Obviously some...
  7. Rupert8

    Turn signal / wiper wiring

    Thanks again. Really appreciating this. @XOLATEM, it's hard to argue with cleaning this all up. First goal is to find the damn problem and then, I know myself, I have to scratch it, can't leave it alone..... I'm going to tidy this thing. My concern with cutting wires after the horrible wiring...
  8. Rupert8

    Turn signal / wiper wiring

    This is awesome, thank you. While it's not a definitive solution - which, like you say, won't be possible remotely and also because someone has been under the dash and gone nuts with butt connectors (or not, in the case of dangling wires) - it has helped me understand a lot and rule things out...
  9. Rupert8

    Turn signal / wiper wiring

    Well I did find something that looks a lot like this photo (from the web) under the dash. My new switch is plugged in to the red connector and grounded to a ground point. Does this tell me anything? Are these after-market or original equipment? Guessing I can bypass this box by finding the...
  10. 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...
  11. Rupert8

    V-belt tension

    Interesting. How do you use it? Across the belt or to position the alternator?
  12. Rupert8

    V-belt tension

    Yep, good point on them loosening after the shop tightened them. I'll re-adjust. And yes, I grabbed the block on the alternator with a large wrench and got the belt pretty darn tight, it's just showing more vibration (like a guitar string kind of thing) than I was expecting to see. Is it...
  13. 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...
  14. Rupert8

    Return line question

    Thanks. I struggled to find that fitting locally so reinstalled the steel line from the lift pump to the filter, with a new olive. I had to bend the line slightly to make it couple up with the new pump, however, which makes me a little nervous going forwards. Is it weaker now? But so far so good...
  15. Rupert8

    Return line question

    Hi, looking for the fitting specs for the fuel pump outlet (to the fuel filter). Planning to install a rubber hose to replace the steel line with the heater.
  16. Rupert8

    Return line question

    True - and I am the proud owner of a set, as above, with a couple already installed on the return line. And they came with a bumper sticker which is always bonus points in my book.... Thanks. But looking for the fuel pump outlet type and sizing if anyone has it to try to get the hard line...
  17. Rupert8

    Return line question

    I'm digging into finding the source of the air intrusion tomorrow, have the day off work. Thanks for all the replies so far. Really want to get this thing starting up better..... What is the size and type of the fitting on the outlet side of the fuel pump? Does that require an olive as well...
  18. Rupert8

    Return line question

    And again, thank you for the clear explanation. Getting it done as soon as I can.
  19. Rupert8

    Return line question

    Thanks. Right - but mine also seems to have a steel line coming directly from the injection pump, which would appear to be eliminated in this setup unless I'm mistaken. Based on @IDIBRONCO, think I'll just leave it be. Makes sense.
  20. Rupert8

    Return line question

    So this just eliminates the return line from the injection pump or am I missing something here? Just the back two injectors return to the tank?
  21. Rupert8

    Knocking after injector change

    Sorry for the slow reply. I'm about to change out the olives (I set up another thread to ask about how to approach that). I'll report back. Thanks.
  22. Rupert8

    Return line question

    Golden. Thanks for the clarity. Is there any way to replace that steel line and fitting with rubber hose? Wondering if heat from the engine is an issue for rubber hose, though, given where it's located. Aha! I was just looking at the hard line between the fuel filter and the injection pump...
  23. Rupert8

    Return line question

    Thanks so much. Perfect. I found some at Russ Repair and just ordered them, two different sizes. I'll just replace the one at the back of the engine since that is really wobbly. And go from there....
  24. Rupert8

    Return line question

    Thanks. Regarding the return line to the fuel filter, just cap that at each end? Any chance of air then making its way through the injection pump? That wouldn't be good. Or building pressure elsewhere?
  25. Rupert8

    Return line question

    No - I didn't, thanks. Totally missed that. It will be checked out this weekend, or before if possible. Great info! I'll check this too. I need to research what an olive seal is but I don't doubt that this forum has that somewhere! No! It has an after-market one. Thanks. I've heard these are...

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