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  1. J

    P0300 but seeing cylinder 4 misfire

    Ok. Well either way they're stretched. In my experience and opinion, should not be reused.
  2. J

    P0300 but seeing cylinder 4 misfire

    Thanks! I plan on replacing that bank 2 upstream sensor. I definitely plan on keeping this beast going. Hoping for a good shake down drive this evening.
  3. J

    P0300 but seeing cylinder 4 misfire

  4. J

    P0300 but seeing cylinder 4 misfire

    So this might be long winded but here we go. Before my initial compression test I was in there checking rockers and push rods. Didn't like where the lash was for number 4 and honestly I made a bad mistake I didn't pay enough attention to how the rocker was sitting when I adjusted it and the...
  5. J

    P0300 but seeing cylinder 4 misfire

  6. J

    P0300 but seeing cylinder 4 misfire

    It's been a while since I've followed up on this. Fuel pressure 58 key on engine off, 55 truck running. Doesn't drop off after turning the key off. Compression test, over 160psi on all cylinders except #4 that one didn't even give me a reading. Sent a bore scope camera in there, piston looks...
  7. J

    Been lurking around trying to find answers. Here's my introduction.

    Its got the 305 h.o with the quadrabog carb Getting ready to build a 4 bolt main 350 for it though.
  8. J

    P0300 but seeing cylinder 4 misfire

    Been chasing this for too long. Started as #4 mis then went to a multiple cylinder misfire. Following list is items I have replaced to date. Spider injection, upgraded Cap, wires, rotor, plugs and cam position sensor ( Plugs are gapped at .45) Fuel filter Tps MAF Plenum gaskets, was in there...
  9. J

    Been lurking around trying to find answers. Here's my introduction.

    I have a 99 suburban 5.7 with 168k on it. Pretty decent for being in northeast NY haha. Lover of older vehicles, prior to the Burban I had a 95 Tahoe tbi, drove it till the frame was ready to snap. Attached is a picture of the Burban the day I towed my 83 z28 project home.

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