Search results

  1. Dmack

    Let’s slay this dragon…

    Hate to state the obvious, but you will probably just have to start tracing wires to.see where they go. You will probably find one of the added wires will go to the HEI, since it wouldn't have that provision on a diesel. My 83 also was a diesel to gas conversion. Mine was such a mess, I...
  2. Dmack

    Help with gauge cluster lights

    The twist-in bulb holders are replaceable. You can also take a pencil eraser and gently clean the area they contact the printed circuit. Also, if you are trying to replace them with led bulbs, be careful. They don't always work and don't mix well with standard bulbs.
  3. Dmack

    Fuel Gauge Tank Selector switch and valve

    Gauge stuck at 9 o'clock means you have an open circuit, so something isn't connected/broken wire/etc. I fought mine for a while before finding it was a bad dash selector switch.
  4. Dmack

    HELP! My truck won’t start!

    Another option is to turn it over until the timing mark is at tdc. Pull the cap and the rotor should point to either #1 or 180 degrees off. If not, you are off.
  5. Dmack

    HELP! My truck won’t start!

    Pull the cylinder 1 plug, put your thumb over the hole and bump it over until the compression bumps your thumb off. Should be #1 coming up on the compression stroke. Look at your timing mark and see if it is close to tdc. If you are off a terminal on the cap, that would put the mark 45...
  6. Dmack

    HELP! My truck won’t start!

    Double check your firing order. Make sure you didn't switch some wires or move the whole set over a terminal.
  7. Dmack

    Made a new tool

    For those who have fought the slide hammer for pulling dents with a stud welder not gripping the pins, especially the garbage one that comes with the Harbor Freight kit. I took a 1/2"drill chuck and adapted it to the slide hammer. Slide it over the pin, grip the outside of the drill chuck...
  8. Dmack

    Help - Inherited a 1978 C20 with SM465 disassembled

    No help on the internals, but since they are basically bulletproof and not rare, I would just look for a cheap used one. But good for you for using what you have.
  9. Dmack

    Fuel Gauge past full

    3 o'clock means you have an open circuit, like a broken wire, unplugged, etc. 9 o'clock means it's grounded somewhere.
  10. Dmack

    Discussion and Opinions on 83'-87' Builds

    My 83 K20, 4sp, 350, 4" lift on 315/75R16
  11. Dmack

    Need Help with Rear Brakes.

    You didn't say year/model. Some of the later HD trucks had a load sensing valve on the rear axle that can cause problems.
  12. Dmack

    Heater Control Cables

    Sorry, it's been long enough since I did the conversion I don't recall. Maybe someone else will chime in.
  13. Dmack

    New carb starts then dies after 5 seconds

    Make sure your idle mixture screws are out about 1.5 turns each, not run all the way in. With the engine off, cycle the throttle linkage a couple times. You should see a constant stream of gas out the accelerator pump nozzles. If no gas is coming out the squirter, pull the fuel line, put it...
  14. Dmack

    Steering shaft

    The plastic pins are put in at the factory to hold length until a collision, where the impact will push the shaft into itself, instead of jamming a steel steering shaft through your chest. I would take a small drill bit to the pins first, then a little localized heat should allow it to collapse.
  15. Dmack

    Steering shaft

    You can heat them, drill them, or just hit it hard. I was able to install mine by lining it up just right and prying it in. Make sure you got the right rag joint too. There are 2 different spline counts.
  16. Dmack

    Fuel gauge

    Past full means open circuit (ie broken/disconnected wire.
  17. Dmack

    Steering Box Question

    I believe they will bolt in, but hopefully you can find someone to respond who knows for sure. I swapped the crossmember from an 84 C10 into my 70, and the 84 box directly bolted to my frame. No mods.
  18. Dmack

    My wife is small and is pregnant

    Look up running boards or tube steps. There have been lots of variations over the years.
  19. Dmack

    Brakes locking up

    Pushrod isn't adjustable on mine with the hydroboost. Fought the lock up issue for a while before trying this. Haven't had the issue since.
  20. Dmack

    1972 GMC C10

    The automatic will roll in any gear shift position except park if it's not running. On the shifter not going into park, try dropping it all the way into first/low and cycle it quickly all the way to toward park, while pulling the lever toward you. My son has to do that on his 68 at times to...
  21. Dmack

    Brakes locking up

    I had the same occasional problem on my 83 that had been converted from diesel to gas. Still.has the hydroboost. Bleeder test would work, but still frustrating. One time it happened, I loosened the two nuts holding the master to the hydroboost, and it released. I made a .1" spacer from...
  22. Dmack

    No crank no click no start 81 c2500

    There is a fusible link in one of the main supply wires, which is basically a wire that a fuse. Also check the battery terminals. My sons 68 C10 would light the dash but not crank. Discovered the negative terminal was corroded between the terminal and ground wire clamp. As soon as I cleaned...
  23. Dmack

    Replace seals on power steering gear box on truck or bench?

    I would try replacing the seals and see how it goes. Seal kits are cheap (as am I).
  24. Dmack

    Strange brake issue

    Probably the proportioning valve got tripped, therefore not letting fluid go to the rear brakes. It should be on the front crossmember on the right side.
  25. Dmack

    Riding mower takes a dump

    Did you check that the wire to the electric clutch didn't get unplugged when you were dealing with everything else? I had one spit completely out from under the mower on a JD320. Ripped the connector off.

Latest posts

Forum statistics

Threads
48,673
Posts
1,074,333
Members
43,346
Latest member
workinman789
Top