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  1. Papikev252

    P0300 - misfire only at idle, none while driving

    Been chasing this P0300 for a while now. 98 K3500 7.4L Hooked up a scanner to view misfire data and it’s all over the place with 2 & 3 and 6 & 7 being the worst. I’ve replaced every ignition component, spark plugs gapped at .45, new Bosch fuel injectors. New crank position sensor and did a...
  2. Papikev252

    7.4L P1133 and P1153 after new O2 sensors

    99 K3500 Replaced both upstream oxygen sensors with new Denso ( from Amazon ) and now am getting both codes. I didn’t get them with the old ones, but they had well over 100k on them and wanted to change. I swapped them with new ones from them after returning and still have the code. Is it the...
  3. Papikev252

    CEL won’t come on

    98 K3500 7.4L Trying to figure out why my CEL only will come on sometimes. When I turn the key to the on position it will most of the time not come on. One day it’ll do it for the day and sometimes on the same day it will not. If I have a code it’ll stay off for a while and then maybe once in a...
  4. Papikev252

    Vacuum Leak at Smog/AIR pump

    1998 K3500 7.4L in California. I had been chasing a vacuum leak for a while. Bought a smoke leak detector and I saw a big cloud of smoke coming from behind the smog pump. Is the pump bad? Is there a seal or hose on it I can replace to where it may be leaking? I just want to see what to look for...
  5. Papikev252

    Hydroboost - stalls with brakes pressed and full lock.

    I recently replaced the fuel injectorss with Bosch on my 99 K3500 7.4L and it finally got rid of my multiple misfire code. Engine idles and runs smooth as ever. After it reaches operating temps, it still runs good but earlier today when I was backing into my parking spot, it stalled. I know the...
  6. Papikev252

    Front Passenger upper shock mount broken off frame

    Hey guys. So I bought this K3500 and only thing that is wrong is that the passenger upper shock mount was broken. Everything else is solid. Whoever tried to fix it did a crappy weld job. How should I get this fixed? Atleast temporarily. I found a guy who can fab and weld new ones only but it...
  7. Papikev252

    7.4L low fuel pressure

    So initially I had a P0300 code for a multiple random misfire so started with changing the spark plugs, fuel filter, wires, distributor, tested and cleaned injectors and replaced the fuel pressure regulator. I then narrowed it down to the reason im getting that code is because I have low fuel...

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