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Thread: What type of batteries

  1. #11
    Join Date
    Sep 2007
    Posts
    329

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    Replaced the fuel filter (activated the fuel pump). Still cranks but will not start. What else should I do?
    1997 Silverado 1500 6.5. with 185,000 miles. New fuel injection pump at 132,000 mi. FSD Heat-Sync in bumper hole, marine fuel injectors, air induction kit all from Walt at 148,000 mi. Replaced OEM Fuel Filter Assy, wastegate solenoid valve, OPS and relay at 155,000 mi. Harmonic Balancer replaced. Red dot and White dot EGR replaced. New starter, Instant Heat glow plugs, and glow plug relay/controller at 180,000. Replaced hydroboost and master cylinder in 2016.

  2. #12
    Join Date
    Dec 2008
    Location
    Conesus N.Y.
    Posts
    100

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    I see you replaced the ops at 155000. Could it be possible it went bad again??
    I have a 1997 horton 4X4 ambulance converted into a motor home. New hot glow plugs, remote PMD and cooler and air induction kit. New duramax fan and 180 degree thermostates. I also own two 99 suburbans.

  3. #13
    Join Date
    Sep 2007
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    329

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    I can try a new ops. Since I cannot start the truck, is there a way for me to know whether the ops is bad before I order and replace it?

    Second question: Would I just remove the 2 fuel filter bolts and push the assembly out of the way. Unscrew the old ops, screw in the new ops, replace the fuel filter bolts and it is done. Or will I have to activate/prime/etc. something related to the new ops?
    Last edited by RipnRun; 11-27-2015 at 08:39 PM.
    1997 Silverado 1500 6.5. with 185,000 miles. New fuel injection pump at 132,000 mi. FSD Heat-Sync in bumper hole, marine fuel injectors, air induction kit all from Walt at 148,000 mi. Replaced OEM Fuel Filter Assy, wastegate solenoid valve, OPS and relay at 155,000 mi. Harmonic Balancer replaced. Red dot and White dot EGR replaced. New starter, Instant Heat glow plugs, and glow plug relay/controller at 180,000. Replaced hydroboost and master cylinder in 2016.

  4. #14
    Join Date
    Feb 2007
    Location
    Baja California Sur Mexico
    Posts
    2,804

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    Are we supposed to remove the plastic caps? The pmd that came off my IP has them on. Check for air out of the top of the filter. Loosen an injector nut to see if fuel comes out, while cranking. I had a lot of slow start problems with the suburban, and after taking a lot of it apart to change a head, I found that the steel fuel return line was loose under the intake manifold, and had worn a hole in it, letting air into the IP over night. Air in the fuel is probably the cause of most problems, there are many places for it to get in.
    Grant H.
    1995 6.5 turbo GMC K2500 extra cab 4x4 pickup, PMD under bumper, mechanical wastegate, 228,000 miles, rebuilt engine, 4.10 diff, 16 mpg
    1994 6.5 turbo GMC K2500 4x4 suburban "F" VIN #9 resistor, PMD in the bumper, mechanical waste gate, 226,000 miles, Positrac 3.73 diff, 17 mpg highway.
    1982 4x4 shortbed 6.2 Chev 260,000 miles untouched motor 17 MPG 4.27 diff. Best thing I ever owned, 21 years.

  5. #15
    Join Date
    Feb 2007
    Location
    Baja California Sur Mexico
    Posts
    2,804

    Default

    Quote Originally Posted by RipnRun View Post
    I can try a new ops. Since I cannot start the truck, is there a way for me to know whether the ops is bad before I order and replace it?

    Second question: Would I just remove the 2 fuel filter bolts and push the assembly out of the way. Unscrew the old ops, screw in the new ops, replace the fuel filter bolts and it is done. Or will I have to activate/prime/etc. something related to the new ops?
    It will start without the OPS, there is a start relay that runs the lift pump, also the IP will suck fuel, but will hesitate on hard acceleration, have driven many miles with no lift pump in both the suburban and the GMC pickup. I have by passed the OPS on both, easy if anyone is interested.
    Grant H.
    1995 6.5 turbo GMC K2500 extra cab 4x4 pickup, PMD under bumper, mechanical wastegate, 228,000 miles, rebuilt engine, 4.10 diff, 16 mpg
    1994 6.5 turbo GMC K2500 4x4 suburban "F" VIN #9 resistor, PMD in the bumper, mechanical waste gate, 226,000 miles, Positrac 3.73 diff, 17 mpg highway.
    1982 4x4 shortbed 6.2 Chev 260,000 miles untouched motor 17 MPG 4.27 diff. Best thing I ever owned, 21 years.

  6. #16
    Join Date
    Sep 2007
    Posts
    329

    Default

    I will hold off on the ops until I know the truck will start again. The SS Diesel Supply website has info about checking the ops while the engine is running.

    I found one website that suggested taking the plastic caps off because they hold heat . I seem to remember Walt telling me years ago to take them off and I think Pensacola Diesel Supply told me it didn't matter, but I could be wrong on both counts. I will make phone calls next week and post the response.

    Do you have any pictures or directions regarding the injector nut? I wouldn't know one if I was looking right at it. Thanks.
    1997 Silverado 1500 6.5. with 185,000 miles. New fuel injection pump at 132,000 mi. FSD Heat-Sync in bumper hole, marine fuel injectors, air induction kit all from Walt at 148,000 mi. Replaced OEM Fuel Filter Assy, wastegate solenoid valve, OPS and relay at 155,000 mi. Harmonic Balancer replaced. Red dot and White dot EGR replaced. New starter, Instant Heat glow plugs, and glow plug relay/controller at 180,000. Replaced hydroboost and master cylinder in 2016.

  7. #17
    Join Date
    Feb 2007
    Location
    Baja California Sur Mexico
    Posts
    2,804

    Default

    I can take a photo, and also of the jumper lead to bypass the OPS, worth doing, even temporary to bleed air out of the fuel filter. Do you want that now, dark here, a flash photo may not look good.
    Grant H.
    1995 6.5 turbo GMC K2500 extra cab 4x4 pickup, PMD under bumper, mechanical wastegate, 228,000 miles, rebuilt engine, 4.10 diff, 16 mpg
    1994 6.5 turbo GMC K2500 4x4 suburban "F" VIN #9 resistor, PMD in the bumper, mechanical waste gate, 226,000 miles, Positrac 3.73 diff, 17 mpg highway.
    1982 4x4 shortbed 6.2 Chev 260,000 miles untouched motor 17 MPG 4.27 diff. Best thing I ever owned, 21 years.

  8. #18
    Join Date
    Sep 2007
    Posts
    329

    Default

    Thank you very much for the pictures offer and take your time. I have an "all day" family thing happening out of town tomorrow. If I am lucky, I will get to work on it Sunday.
    1997 Silverado 1500 6.5. with 185,000 miles. New fuel injection pump at 132,000 mi. FSD Heat-Sync in bumper hole, marine fuel injectors, air induction kit all from Walt at 148,000 mi. Replaced OEM Fuel Filter Assy, wastegate solenoid valve, OPS and relay at 155,000 mi. Harmonic Balancer replaced. Red dot and White dot EGR replaced. New starter, Instant Heat glow plugs, and glow plug relay/controller at 180,000. Replaced hydroboost and master cylinder in 2016.

  9. #19
    Join Date
    Feb 2007
    Location
    Baja California Sur Mexico
    Posts
    2,804

    Default

    Ok, photos tomorrow.
    Grant H.
    1995 6.5 turbo GMC K2500 extra cab 4x4 pickup, PMD under bumper, mechanical wastegate, 228,000 miles, rebuilt engine, 4.10 diff, 16 mpg
    1994 6.5 turbo GMC K2500 4x4 suburban "F" VIN #9 resistor, PMD in the bumper, mechanical waste gate, 226,000 miles, Positrac 3.73 diff, 17 mpg highway.
    1982 4x4 shortbed 6.2 Chev 260,000 miles untouched motor 17 MPG 4.27 diff. Best thing I ever owned, 21 years.

  10. #20
    Join Date
    Dec 2008
    Location
    Conesus N.Y.
    Posts
    100

    Default

    I would be interested to see the jump for the ops also. Thanks
    I have a 1997 horton 4X4 ambulance converted into a motor home. New hot glow plugs, remote PMD and cooler and air induction kit. New duramax fan and 180 degree thermostates. I also own two 99 suburbans.

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