I think you're right about the pin 3. I'll try that.

I put in a bottle of Liquid Moly Jectron 2007 fuel injection cleaner every time I fill the tank, and double up when I let it sit for up to a month. I also occasionally use Stabil 360 if I fill up at Sam's Club (my normal go-to is Quik Trip, with top tier premium, and Shell once). I'd rather have too much additives than not enough...fuel injection requires more care than the carburetion that I grew up and trained for, then used for 45 years!

Also, I checked the operation of my injectors using the BimmerTool android app, which checks for "smooth running" and misfire counts. I did that last year (about 1200 miles ago), and all 6 cylinders were running quite balanced, with no misfires, at that time.

I haven't removed the injectors to physically test them, but the previous owner ( who had purchased the X5 specifically at my request, to swap for my Chevelle in trade) bought and installed new Bremi injectors only about 6 months before we swapped cars (he had renewed & restored most systems that needed work, as per our agreement). So, those injectors probably have only about 4k miles on them, but who knows how many hours, due to my constant testing and trying to find the phantom vacuum leak (and my fan projects, too). But, I plan to get an injector tester when any signs of a misfire occur.



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__________________
01 BMW X5 E53,3.0i-5L40E, 7/13/01
topas-blau,Leder-grau,"resto-project car"

Here:
14 Lexus ES350,3.5L-U660E
09 HHR Panel,2.2L-4T45E
04 Chevy 2500HD,6.0L-4L80E
98 GMC Sierra 1500,5.7L-4L60E

Gone:
66 Chevelle Malibu 2dr ht.,327>441c.i.-TH350>PGlide/transbrake
08 Cobalt Coupe,2.2L-4T45E
69 & 75 C10s,350c.i.-TH350
86 S10,2.8L-700R4
73 Volvo 142,2.0L-MT4
72 & 73 VW SuperBeetles,1.6l-MT4
64 VW,1.2l-MT4
67 Dodge Monaco 500 2dr ht.,383c.i.-A727
56 Chevy 210 4dr,265c.i.-PGlide