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Thread: What have I done...

  1. #21
    Join Date
    Dec 2003
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    Yukon Canada
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    Plug in the block heater
    loosen the injector lines,

    crank till you see fuel coming out,
    tighten the lines.
    if you remove the glowplugs it will crank easyer,and you don't have to loosen the lines on the injectors
    90 Chev 3500 c/c 4x4,6.2na,400 auto,4:10 gears.DSG Timing gears,main girdle, isspro tach, pyro,boost,oil and trany temp.Dual Tstats, High volume peninsular pump,on shelf, Custom turbo and intercooler 85%complete. Change of plans for the dually, it's going to get a Cummins. Both trucks are Blue 90 4x4 crews

  2. #22
    Join Date
    Apr 2001
    Location
    CA
    Posts
    13,573

    Arrow

    Quote Originally Posted by Yukon6.2 View Post
    ....if you remove the glowplugs it will crank easyer,and you don't have to loosen the lines on the injectors
    This. It will be the quickest method to starting and completely purging. Crank until fuel mist is coming from each hole. You don't have to do the 6-8 cylinders if you can't reach them. By the time the rest are good, they will be, too.
    1985 Blazer 6.2
    2001 GMC 2500HD D/A
    dmaxmaverick@thedieselpage.com

  3. #23
    Join Date
    Feb 2020
    Location
    washington missouri
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    19

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    Most of the accessories are still off the engine, but she starts! Noticed no oil pressure, not sure if that's because so much is disconnected or what. I'll reassemble and check again.

    Ended up with new batteries and a new starter

  4. #24
    Join Date
    Apr 2001
    Location
    CA
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    13,573

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    That's great that it runs. Not so much with the oil pressure. Get that figured out before anything else. It's probably nothing but a sensor or wire, but if it isn't, it won't end well.
    1985 Blazer 6.2
    2001 GMC 2500HD D/A
    dmaxmaverick@thedieselpage.com

  5. #25
    Join Date
    Feb 2020
    Location
    washington missouri
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    19

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    It was fine when it died. Hoping its a ground issue or wiring. Like you said

  6. #26
    Join Date
    Apr 2001
    Location
    Newberg Oregon
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    12,282

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    You can get a mechanical gauge screwed into the block easily enough.

    Do that and see if you have oil pressure......
    Once you know that pressure is OK THEN SORT OUT THE GAUGE/ELECTRICAL ISSUE....
    (1) 1995 Suburban 2500 4x4
    (1) 1997 Astro
    (1) 2005 Suburban (Papa Smurf)
    THIS IS BOW TIE COUNTRY

  7. #27
    Join Date
    Feb 2020
    Location
    washington missouri
    Posts
    19

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    When you let a loose nut behind the keyboard...

    I broke the sensor. Replaced with a new one.

    Engine reassembled. Runs rough, low power,
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  8. #28
    Join Date
    Dec 2003
    Location
    Yukon Canada
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    Is there smoke when it's running?
    If so what color is the smoke?
    My guess is a big air leak in the fuel system
    90 Chev 3500 c/c 4x4,6.2na,400 auto,4:10 gears.DSG Timing gears,main girdle, isspro tach, pyro,boost,oil and trany temp.Dual Tstats, High volume peninsular pump,on shelf, Custom turbo and intercooler 85%complete. Change of plans for the dually, it's going to get a Cummins. Both trucks are Blue 90 4x4 crews

  9. #29
    Join Date
    Feb 2020
    Location
    washington missouri
    Posts
    19

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    Once it warmed up, not that I could tell. It was dark though

  10. #30
    Join Date
    Feb 2020
    Location
    washington missouri
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    Not seeing much smoke.

    Also put clear line on injector return to pump and the line is clear of bubbles.

  11. #31
    Join Date
    Feb 2020
    Location
    washington missouri
    Posts
    19

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    Changed both rubber lines at the back of the motor, installed the new lift pump I've had sitting around, then finally found the leak coming from the heater part of the ffm.

    How low of a temp can you run without a fuel heater?

  12. #32
    Join Date
    Apr 2001
    Location
    CA
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    If your fuel is always winterized or treated for whatever temperature it will see, then you don't need a heater. The filter heater is intended for those times on the balance, to allow for a slight edge past that. It's a nice-to-have, but certainly not a requirement if you don't exceed the limitations of the fuel. Keep in mind, #2 will start to wax before it actually freezes, so a comfort margin is in your favor.
    1985 Blazer 6.2
    2001 GMC 2500HD D/A
    dmaxmaverick@thedieselpage.com

  13. #33
    Join Date
    Feb 2020
    Location
    washington missouri
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    We are running and no smoke after warming up. Still messing with timing though. Any input?
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