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Thread: Out of ideas trying to start a 98

  1. #1
    Join Date
    Jan 2020
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    Default Out of ideas trying to start a 98

    Still trying to start 98 6.5 problem is I can pull glow plugs from heads and get a mist but when I try to start I get no smoke out the back end and it doesn’t even act like it wants to start also have all new Bosch plugs. The batteries are old 2014 but it still turns over, however when I check voltage I have 12.1, I took them to advance and and got 513 and 423 cca my question is is there a min voltage the pmd needs to spray fuel I think with cranking under load (with the plugs in) and heating glow plugs could it be pulling voltage down to much for the pmd
    Last edited by Bill D; 02-10-2020 at 16:03.

  2. #2
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    The motor needs to turn over fast, with old batteries it may not be spinning fast enough...
    1993 Chevy K3500

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  3. #3
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    Default

    But shouldn’t I still get smoke out the back?

  4. #4
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    New Hampshire - Live Free or Die
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    Default

    With the electronic pump there's no fuel until you break minimum RPM. It might be 200 RPM, but I'm not sure any more. What's the battery voltage(s) at cranking speed?
    The Constitution needs to be re-read, not re-written!

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  5. #5
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    Default

    Bill D,
    You indicated that there was no smoke from the back. Check your air intake and exhaust system, a small mouse nest can cause big problems.
    Good luck
    John
    *2006 Chevy, 3500, 4X4, DRW, (LBZ) D/A, CC, LT, 252K Miles, 19.5" Wheels, Mag Hytec Transmission Pan and Differential Cover, SS Grill Guard, Racor 2 micron aux fuel filter, 100 Gallon Aux Fuel Tank, using Edge Evolution, Predator Diablosport, Kennedy ECM tune, Fitch Fuel Catalyst.

    *2006 Four Winds, Dutchman, 36', RV, D/A, 5500 Kodiak.
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  6. #6
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  7. #7
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    Apr 2001
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    Festus, MO.
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    Default

    I believe min crank speed is 400rpm.

    Big Green

  8. #8
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    Default

    I had a 94 that did that to me at that grocery store. Sounded like it was cranking fast enough but wouldn't hit minimum RPM to get the fuel solenoid to open. Have someone crank it while you have you hand on the solenoid and see if its clicking open. If it doesn't it time for batteries. Make sure the solenoid works first.
    "The Constitution is not an instrument for the government to restrain the people, it is an instrument for the people to restrain the government."
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    A5150nut
    2006 K3500 D/A
    94 6.5 4x4 5spd Sold

  9. #9
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    Dec 2009
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    In the North
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    A 6.5 starts best when its whizzing over,. Slow rpm equals poor injector pressures,.pull couple of glows and manually verify they are working well
    1999 chev suburban C2500
    300,000 mi

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