Recent content by Road Trip

  1. Road Trip

    Fuel pump

    Yeah, I also noticed after the fact that a full screen snap is sub-optimal when wiring diagrams are involved. Let's try this instead. Instead of a screen snap to a .jpg, this time I extracted the page in question to a .pdf file and attached that. On my end this looks to be a near 100%...
  2. Road Trip

    Cylinder Compression

    Greetings katwood16, When you installed the timing gears & chain, did you line up the timing marks per the manual? We need accurate cam/crank phasing in order to generate proper compression. And if that is known-good, we then need to verify how you adjusted your valvetrain. (Lifter preload?)...
  3. Road Trip

    IAC counts high

    Greetings dhworkin, Welcome to the GMT400 forum. I don't know the age and/or condition of your harmonic balancer. If it's the stock one, the outer ring may have slipped in relationship to the inner hub after all these years. (I wish that a small painted witness mark would be drawn on all...
  4. Road Trip

    1990 C1500 distributor reinstallation

    Greetings Herbk, Welcome to the GMT400 forum. Been where you are. If you do the following sequence of events, you should have no problems with the distributor R&R: 1) Disconnect the battery. Prevents accidental turning of the engine while the distributor is out. This is 99% of the reason...
  5. Road Trip

    Cooling System Upgrade/Replacement

    Sounds good. I much prefer a straightforward parts fatigue type failure as opposed to an issue where the cooling system is being pressurized from a failing spot in a head gasket. Sounds like you managed to add some cooling system headroom by a savvy treasure yard upgrade while you were at it...
  6. Road Trip

    Cooling System Upgrade/Replacement

    I've seen that plunging behavior when there was an air pocket in the vicinity of the thermostat. Make sure that you have the overflow tank in place and keep filling it back up to the cold mark until the system quits burping air/slurping water coolant to replace it. Once the system is 100%...
  7. Road Trip

    Fuel pump

    Turns out I did. Check out this SIR page taken from the '96 FSM. (See attached.) Another fun factoid you can share at the next party you get invited to. :0)
  8. Road Trip

    Fuel pump

    I just rescanned the '97 FSM for all instances of G201. Sure enough, it's a separate ground dedicated to some sections of the SIR circuitry: By the same token, G200 is also intertwined in all this. (Admittedly this the first time I've looked at the SIR circuit, thanks to the fact that the...
  9. Road Trip

    Fuel pump

    Physical location illustration of G200 & G201: And the big picture overview of how the Ground naming convention is laid out: For what it's worth --
  10. Road Trip

    Fuel pump

    Hello 62barsoom, According to the '97 FSM, the short answer is that there are only 2 grounds in the cab area: Given the 5-image limit I'll have to post the physical location illustration in the next post. And if I'm not mistaken, G201 is only used for the Air Bag setup? At any rate, you...
  11. Road Trip

    Distributor problem am lost

    My best guess from over here is that the spring loaded conductive carbon button that goes between the cap-mounted coil & the spinning rotor underneath is MIA, and this missing component would lead to this kind of high-voltage carnage: Note: The large cap HEI system is the unofficial Honey...
  12. Road Trip

    P0303 Misfire only under load

    + **** Greetings SableSlayer, Looks like both @Jacobchevys & @98yuk haven't been in here for awhile, so although my comments pertain to all 3 forum members, I am going to focus on your situation, since you are currently active. **** The SBC in our GMT400s can falter in one of 2 ways. The...
  13. Road Trip

    My 1991 RCLB C1500 Silverado

    From up here in the rust belt that looks to be a super clean beauty of a RCLB. Take good care of your first truck, for you will be making memories that will last a lifetime. And you may not realize it yet, but there are a lot of people who will walk by all manner of new trucks in order to get a...
  14. Road Trip

    Teal daily driven farm truck.

    I'm old enough that we used to rebuild Master Cylinders as the default, and only swapped them out when the original unit was beyond repair. Anyway, I just wanted to share that your last sentence is spot on. Back in the day we would have a vehicle with a firm pedal, but noisy wear squealers...
  15. Road Trip

    Teal daily driven farm truck.

    ...and there's the last piece of the puzzle for yours truly. My bad for not reading for comprehension. With all new braided stainless, everything fully adjusted, and a fresh, correct master I would expect a really good pedal? I'm looking forward to what you figure out. This is a head scratcher.
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