1997 gmc yukon - top of distributor

[GEARJAMMER1986]

Okay thanks for the help. Havent been able to login for awhile lol, i will replace the fuel pressure regulator by itself first, as its all i can afford first.lol. Does anyone have instructions on how to do this? on a 1997 vortec 350? Also, whats the best spark plug for this engine. its a 1997 Yukon 4x4 with 350 vortec

 

[SunlitComet]

My instruction is don't do it. Unless you can confirm it is leaking don't replace it until you can afford the new injection system or your engine is desperate for a regulator. Big price savings when you get the whole unit. For the plugs ACDelco 41-993 or Autolite xp605. They will be pre-gapped so do not adjust them.