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  1. O

    instart no restart on great running engine (new Injectors)

    got it problem was the high pressure relief valve. supposed to pop of at 27500 was letting fuel through on crank. Replaced it and no more problems!!! thanks guys
  2. O

    instart no restart on great running engine (new Injectors)

    i did not replace the feed line i media blast them and reuse. i have done it at lease 100 times and never had an issue.
  3. O

    instart no restart on great running engine (new Injectors)

    No lift pump all thigh I do pressurize tank to ensure low pressure fuel to cp3 trying to eliminate that possibility
  4. O

    instart no restart on great running engine (new Injectors)

    I purchased an 2004 gmc 2500hd 6.6 lb7 with 210,000 miles not running very cheap for a project truck. After finding only 1,000 max fuel pressure while cranking with all needed P.I.D.s I pulled all 8 injectors and the cp3 for testing. All 8 injectors had issues but it turns out the pump was...