Quote:
Originally Posted by usmma2013
As an aside but perhaps related, despite starting very quickly the idle is fairly horrid until fully warmed up and even then not stellar.
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Given this, and that you've already removed / replaced the #1 delivery valve and you may not have replaced the copper seal with new, I'd recommend you order at least a complete set and maybe some extras if you plan to adjust timing in the future, and "rebuild" all the delivery valves with new washers. New springs are recommended by the FSM as well, but most people don't bother.
I would imagine that old weak springs would allow an earlier release of fuel from the DV, but the injector pressure setting would hold that build up of pressure until the set point is reached, so maybe no effect?