Quote:
Originally Posted by regal
Thanks elements for the back and forth. I think you've finally proven there are bad DI pumps. I asked toyota for DI pump pressure plots when the whole cricket thing first started. Maybe the cricket noise those of who have spent 20 years in a factory can't hear is a sign of wear. In general a pump making abnormal noises is wearing prematurely. Do they have a new revision yet that does wear out?
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I was told they are on maybe revision 3 but until I get the car back I won't won't able to see if there is a practical difference. I don't think it will get rid of the dip (which we've been able to tune around) as I think that is just what we're going to get with a 3 lobe pump at low RPM.
I had never heard the "crickets" until this particular car so I could never relate to what others were experiencing. These engines make so many strange noises from the cam rattle at start up to the EGR, to the injector clicking, its like an engine haunted house. LOL!