1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

Gas in throttle body hose

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Old May 18, 2006 | 09:50 PM
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Default Gas in throttle body hose

there is gas in my throttle body hose (between the filter and the throttle body) im tryin to find out what would be the cause of this
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Old May 18, 2006 | 10:02 PM
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Alright, well how does the car run? Eratically? Backfiring? Rough idle? Give us a little more info, we can help ya out.
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Old May 18, 2006 | 10:07 PM
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How much gas?
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Old May 18, 2006 | 10:11 PM
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My guess is the fuel pressure regulator is leaking into the vacuum line, and the gas is going into the intake. Pull the vacuum line off the FPR, any gas in it?
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Old May 18, 2006 | 10:34 PM
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i pull the one leading from the dashboard area off and theres no gas and the top one on the other side. i did this to replace the vacum hose that holds it together, but that isn't the problem. its only a little gas not a whole lot. its hard to start, it stalls when im shhiftin from r to p or r to d or d r when the engine'* hot. when the engine is cold it runs good. i do have rough idling, and erratic it backfires rarely when its in park, but its not loud.
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Old May 18, 2006 | 10:39 PM
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There should be a line that goes to the FPR. The FPR is on the fuel rail. You need to check that one.
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Old May 18, 2006 | 10:43 PM
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the bigger one? cuz theres only three small lines (2 on one side and 1 on the other)
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Old May 18, 2006 | 10:55 PM
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Look behind the throttle body. You'll find it.
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Old May 18, 2006 | 10:57 PM
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ok if and when i find that then what...........like if i stand in front of the car it would be in the back of the throttle body
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Old May 18, 2006 | 11:06 PM
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The fuel pressure regulator (FPR) is IN the fuel rail directly behind the throttle body. There is a single vacuum line coming into the top of it.

Pull it AFTER DRIVING, and see if there'* fuel in it.
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