Pregen uses 12.7mm reach plugs and newgen has 19mm. If newgen plug was accidentally installed in pregen, it would hit and stop engine very first spin around. And/or punch hole right away. But I don't think starter has that much power. It would go >CLUNK< and stop.
Check cam-chain wear and tension along with cam timing.
Last futzed with by DannoXYZ; July 25th, 2018 at 09:33 PM.
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