Quote:
Originally Posted by Diseasel300
It sure is easy to overcomplicate things and do a lot of extra work, especially when so many DIFFERENT things can cause nailing. I'd consider the DV's to be a "major" issue compared to the "usual suspects" such as injectors, compression, timing, and DV seals (on the 60x engines).
Before doing a bunch of work that simply isn't required and spending countless hours worrying about that .1mV, take care of the usual issues first. If the problems don't resolve and the compression is good, move on to DV's.
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I hate having to pitch milli volts. It is just a tool that more and more is learnt about. .
I believed one gentleman was clearing carbon as his milli volts where growing closer to each other. It really bothered me that his idle was not improving as the milli volts had closed up substantially.
I knew they where still in no way close to what they should be. Yet he saw no improvement. Since there was no compression check done of the engine I was reluctant to speculate. You cannot skip an indicated step in using milli volts in testing without risking getting lost.
Some of the more conventional service types at the time thought his head might need to come off. All I know is when you do not know what is going on. Using any tool that can help establish what is. Is not a bad thing.
Tragically since milli volt application has not caught on yet. Almost ever time it is used something new is learnt.
I suspect at this time. When we develop a workable test for delivery valves. This poster will find some leakage in others in his injection pump. Not as bad as the real offender was. Realistically a good check valve has no leakage present at all.
No absolute reason to address them if the engine is still running normally as far as the ear notices.