troubleshooting

  1. D

    1980 C10 backfires through carb under load

    So I have a 1980 c10 with a 305 I bought in perfect running condition a few months back. I did a edelbrock performer intake, performer 1406 carburetor, plug wires and plugs, cap and rotor on the distributor, recurved it and set it to 8* BTDC and now as soon as I give it any load that's not...
  2. L

    Heatercore to transmission problems.

    Hey, I just finally had to replace my heater core in my 85 c10, had to special order the core off of summit so it took a few days to get here, the truck had to sit for about 3 days, and was operating just fine until I parked it, I drove it home, now, after taking that heater box off, replacing...
  3. Y

    Leaking head gasket?

    Hi, this is my first post but I have been using this forum for information for a while now. I have a 1987 gmc v2500 5.7l. My issue is that my coolant turned from the normal slightly dirty/rusty to black with a touch of green from the Prestone within a couple of days. I noticed I had lost oil...
    • youcancallmedusty
    • Thread
    • 1987 gmc v2500 5.7l blown head gasket dark coolant diagnostic head gasket leak sierra troubleshooting v2500
    • Replies: 9
    • Forum: Tech Discussion
  4. Z

    New to Square body.. electrical nightmare...

    New to the forum, new to chevy square body's and not the most experienced mechanic. I bought a 1983 C30 to build a classic welding rig out of, its got some problems so I'm sure I'll be here a lot. Starting off, its definitely got some wiring issues, headlights are not working, only the running...
  5. B

    Silly Question but could I possibly have an ECU?

    Strange question, I know but I have an 84 K20 w/502. Bought truck with an OLD analog Projection 4 fuel injection system. Truck runs amazing at full throttle but stalling when slowing or stopping and hard to get going again. I changed all tune up stuff, fuel pump and even new distributor b/c...

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