spark plugs

  1. N

    P1345 code and it's syptoms or effects

    I got a catalytic converter issue on my 1996 sierra 7.4 vortec with almost 300,000 miles. It has new lifters,rods,cam,sprockets,chain,oil pump,stater,crank chaft sensor,cam shaft sensor,disributor cap,plugs and wires etc. Not sure if it was caused by engine problem related to this code but I...
  2. 8

    fouled spark plugs??

    my 81 gmc started running rough and would shake and hesitate when pushing the gas, like it was misfiring. Would fouled spark plugs do this? there was fuel all over one of the plugs when i took a glance at it
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