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Thread: no fuel to injectors with ds4

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  1. 05-18-2009, 09:14 #1
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    I did have the lift pump jumped out on an switched acc. lead from the new wiring harness in the jimmy. I left it on and it got pretty hot until it just stopped. It was a cheapie fuel pump anyway, but it had the correct flow rate.

    I will remove glowplugs next time I have a go at it!! I have a bleeder valve on the thermo cross over and I did let out a pint of fuel. I was just watching for fuel to come running down the injectors where I cracked the lines..

    heres some pics, as you can see I have pretty easy access.!!







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  2. 05-18-2009, 15:00 #2
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    jeezus! you have acess galore!

    Stay at it! Robyn has given you some good tips...looks like your starting with new lines (injection) so it could take a while.

    be patient looks like its not your daily driver anyway by the look of the access ports!
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    New IP/Injectors/G-plugs @ 137k
    Another autozone alternator and Optima Reds @ 150K
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  3. 05-19-2009, 22:13 #3
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    Well I gave it another 2hrs worth of cranking sessions with the glow plugs removed... I got a good amount of fuel comming from injector line 7 initialy but none of the others seemed to fall in line.

    I replaced the lift pump with a new carter unit and got it going, bled out about a half gallon of fuel to purge the lines..

    My thoughts are maybe I'm not giving it enough power.. I'm using a single optima yellow top with a battery charger attached to keep the batt topped off..

    All the ecu harness grounds go right back to the batt negative so I don't thats an issue.

    I'm at a loss for now..
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  4. 05-20-2009, 02:59 #4
    simon
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    2 good batts will deff help to attain cranking speed to start,but for getting fuel to the inj it should not be a problem.

    are you 100% sure all wires and connections are good?

    Is the PMD known good?

    Why was the engine put in storage? running issue ?or a cratered vehicle? What is the complete history?

    A new engine dont mean a new IP as well. The IP itself could be the culprit.Maybe the Fuel solenoid is sticking (gummed up)after sitting for so long? Might be time to at least have the IP tested.

    I never had a problem bleeding and starting a 6.5 engine i have rebuild or changed fuel components on within 5 min
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  5. 05-20-2009, 21:17 #5
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    well this is a factory brand new motor and components with very little milage, about 5000. it was used for this
    http://www.millenworks.com/html/ligh...navItemIndex=4
    they pulled the motor "after trials" to test an electric drivetrain..

    I checked the grounds and gave it a few more tries, still no luck...

    I have a mechnical 5209 pump as a back up, I just need to figure out how to run the 4l80e.
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  6. 05-20-2009, 21:19 #6
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    I would try using two batteries. It takes 100 rpm cranking before the computer will allow the IP to send fuel to the injectors.
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  7. 05-21-2009, 14:06 #7
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    yeah keep the charger on whilst you crank away also!
    95 Suburban 1500 Bone Stock Orig.
    purchased at 103K from first owner
    new alternator/autozone gold @104K
    re-trannyed with shift kit @107.5K
    new Bilsteins all around @ 127K
    Kennedy exhaust @128k ..zoom!
    new lift pump w/OPS bypass @ 130K
    Kennedy FSD cooler @ 135K
    New IP/Injectors/G-plugs @ 137k
    Another autozone alternator and Optima Reds @ 150K
    Another pump and injectors @157K
    New chain and gears @157K
    HO pump single therm setup @157K (will see what happens)
    Head gasket or worse to be determined...164k
    NEW AM General 6.5 installed and running well! @ 164K!!!!!
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  8. 05-23-2009, 14:31 #8
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    well I can't figure it out, so I'm changing the plan of attack!!

    \

    could have been the pmd or an assorment of other issues as I was finding out via research. there is my back up plan. can anyone point out all the things I will need to make this work? I am finding that the throttle bracket will need to be modified, and somehow I will need to make trans work..

    The new pump is a db831-5209
    The trans is a 97 4wd
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    75 GMC Jimmy with a 97 H-1 Hummer drivetrain on 1 ton axles.
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