daydreamer
New Member
- Joined
- July 27, 2008
- Messages
- 3
- Reaction score
- 0
- City, State
- East Central Illinois
- Year, Model & Trim Level
- '94 XLT 4X4
I pulled the dual vacuum lines off of the EVR vacuum solenoid and gas poured out. I suspect the fuel pressure regulator is leaking gas into the vacuum lines. I have a "94 XLT with 236,000 miles. I have a couple of codes 137, 173 KOER (HO2S, L + R, sensor fault, always rich.) My question is when I replace the regulator do I have to lubricate the O-ring before installing? Can I just use a little bit of engine oil? Thanks.