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  1. I

    Misfire on idle after fixing code 42

    So this could be the issue causing the miss? Still confused on why it would run fine on base timing if it was a motor issue. Unless it not sealing so messing with the sensors?
  2. I

    Misfire on idle after fixing code 42

    Just checked vacuum and it’s extremely erratic at around 20inhg Almost looks like the needle is buzzing between 18 and 21 Is this a valve not fully closing? Or a vacuum leak. And could this cause the mis if it was running fun on base. I did the test with the truck not missing
  3. I

    Misfire on idle after fixing code 42

    What all controls timing on these trucks. I’d assume the knock sensor does is there a map sensor and if so does it have an effect on timing. I’m wondering if there could be a simple vacuum leak or something that wouldn’t cause too much of a problem when the electronic timing isn’t working which...
  4. I

    Misfire on idle after fixing code 42

    How do I check these things. How do I identity which cylinder is missing and o2 sensor swings
  5. I

    Misfire on idle after fixing code 42

    Yes with it just running off base timing it doesn’t miss. But with the electronic advance connected it misses but only on idle. Does the electronic timing control anything other than just ignition timing? Because if not wouldn't it stand to reason that there is a fault in that system if it ran...
  6. I

    Misfire on idle after fixing code 42

    I’ve got a weird one. I recently bought my 1994 k1500 with the 350 from a guy in my area. He had owned it for a short time and the owner before him put an aftermarket tbi setup with a spacer and different ram style intake in it. To my knowledge that is the extent of the aftermarket parts...
  7. I

    Clicking/buzzing coming from drivers side dash

    It still doesn’t make sense to me why it quits when at full lock going down my driveway. Maybe the noise is sneaking by the steering shaft grommet or resonating through something that just so happens to deaden out when in that position?
  8. I

    Clicking/buzzing coming from drivers side dash

    I believe so I didn’t do much research into it. Has a spacer and an intake and the guy was unclear if it was an aftermarket unit or just a remand one. And yes I can feel the injectors firing in time with the click.
  9. I

    Clicking/buzzing coming from drivers side dash

    I took the air cleaner off and this is what it sounds like. Almost sounds like injector noise is seperate from whatever the other one is. Not even 100% sure that’s what I’m hearing in the cab because I don’t know how it sounds so clear in there. I can feel a sort of vibrations that is in time...
  10. I

    Clicking/buzzing coming from drivers side dash

    Previous owner claimed to have installed a new one. How could I test it.
  11. I

    Clicking/buzzing coming from drivers side dash

    Not really, doesn’t feel like anything is wrong with it. Previous owner put an aftermarket throttle body in it could it be a solenoid or iac or something inside that?
  12. I

    Clicking/buzzing coming from drivers side dash

    I’ve done some more investigation and it seems like it’s coming from under the hood. Either the distributor ignition coil or the throttle body. Any ideas?
  13. I

    Clicking/buzzing coming from drivers side dash

    Here is the noise
  14. I

    Clicking/buzzing coming from drivers side dash

    Please help. I recently bought a 94 k1500 with the 350. When the engine is running there is this weird rapid clicking or buzzing coming from the drivers side dash area. It sounds louder when you are under the dash where the pedals are. If you give it a little throttle it increases in speed and...

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