Way to go 2000CAYukon!!
Good job pointing me in the right direction...I was sick of "skirting" around the fuel delivery problem by letting people make me think it was sensor/ignition related.
Went back to shop today and plugged in the fuel pressure guage...
Turned on ignition - pump came up to 63psi
Turned off ignition (leaving gauge hooked) - saw the inevitable...a slow drop in pressure!! By 2 minutes into it was at 30psi.. (thinking bad pump)
Started the truck with guage hooked...pressure jumped to 73psi!!! ACK!!
No wonder it's RICH...I hope I haven't damaged Fuel Pressure Regulator or Injectors...or clogged my CAT...
Guys at the shop are replacing it Thursday (parts were guarenteed). That's good.
Many thanks, I'll post follow-up and let ya'll know how it all goes after pump replacement.
(sigh of relief)....for now
CrazyHerb
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