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  1. Mach Z RT and MXZ 1000 SDI Models
    Last night I got a call from an other 07 MachZ owner (non DooTalk) who just put a hole in the crown of the MAG piston. Some of you guys will remember this MachZ, since I wrote about it a few times. He's the one who had a broken exhaust valve stem on the MAG side which was stuck closed, and he...
  2. Mach Z RT and MXZ 1000 SDI Models
    The elusive Current Spike I once read that current spikes on the 1000 SDI engines were causing all sorts problems. Here is a simple exercise to narrow down the search and unravel the mystery. Posi-Flow Lift Pump @ ~10 ohms the maximum amp draw will be ~1.4 amp 14 volts / ~10 ohms = ~ 1.4A...
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