Recent content by jdb

  1. J

    First diesel 1993 F250 7.3 IDI

    Getting cold up there in Alaska, and some of that cold is coming our way (BC) pretty soon. How is your project coming?
  2. J

    Orange Screen Warning

    Running Firefox. Was getting the warning for the last 3 days or so. Gone as of this morning :D
  3. J

    I don't understand the physics

    My observation is that the truck smokes badly (smells like diesel) and runs poorly on start, but runs ok (although still smells a bit like diesel) when warmed up. I have eliminated all visible fuel leaks in the return lines and caps. I put clear hose between the lift pump and the fuel...
  4. J

    I don't understand the physics

    Thanks for everyone's input on this. This all is starting to makes sense to me, and FordGuy100's description of compressible fluids is very useful. However: 1) is it true that a leak in the return line at an injector allows the hard (high pressure) line to the injector to drain down, which...
  5. J

    I don't understand the physics

    I apologize for being dense, but I still don't get it. The supply is drawn from the bottom of the tank ... no air there (I have plenty of fuel in the tank). My fuel system diagram shows the return lines going back to the tank, so presumably any air in those return lines just gets added to the...
  6. J

    I don't understand the physics

    Yes, it's true that it is only when it starts (lots of smoke, bunny hopping). But I still don't understand how air in the return lines makes this happen. What am I missing?
  7. J

    I don't understand the physics

    92 7.3 IDI non-turbo with fuel filter to #1 cylinder cap delete. I have read about, and experienced, very rough engine running when the return lines are leaking. I don't understand the physics of this. High pressure fuel is fed to the injectors to run the engine. Low pressure surplus...
  8. J

    do you take your IDI on long trips?

    We take our 92 IDI on a 2000 km road trip every year.
  9. J

    diagnosing the 6.9L want advice

    My 92 has 6 digits ... but it's electronic, and apparently Ford didn't think these trucks would ever run past 400k km, so when we rolled 400,000 the odometer went back to 300,000!
  10. J

    One cylinder running cooler, injector problem?

    Price was after taxes, before core rebate, and rounded up, so more like $100 CDN. JM7.3CW??? Sunshine Coast, BC I've read that I should get a "matched set" of injectors to make sure they pop at the same pressure. Wondering if that is my problem here. But whether I buy from a dealer...
  11. J

    One cylinder running cooler, injector problem?

    Smooths out, less smoke.
  12. J

    One cylinder running cooler, injector problem?

    7.3 IDI, manual, extended cab, has 420,000 km. All eight injectors replaced 9 years ago at 235,000 km, "BB" type (at that time, I didn't know there were different types). On holidays this summer, long way from home, truck started running rough, "bunny hopping" in low gear, lots of smoke...
  13. J

    Engine loses power and dies after warm

    I have a 94.5 PSD. On mine I can read the codes manually, see for example http://www.thorssell.net/hbook/eectest.html. Guessing you may be able to do something similar. Not that it helped much in my case...
  14. J

    Engine running very rough, not a bad cam position sensor

    No, I had my swivel sockets ready, but I was able to get everything with a standard socket plus extension bars as necessary. Only the studs are 13 mm, the bolts are 10 mm. Hardest part was breaking them loose. Have bruises on my hands to show for that :(
  15. J

    Engine running very rough, not a bad cam position sensor

    94.5 Powerstroke, manual transmission, extended cab, 2wd. Engine started running very rough - so rough that it was undrivable - but intermittent. Engine check light would come on when running rough. Ended up towing it home. EEC(?) codes that I read from counting the flashes in the KOEO...
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