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I was getting into my Bronco tonight from the passenger side. My girlfriend started the Bronco right before I got in and I smelled gas strongly. I have a pretty bad electrical whine coming from my fuel pump too. It's a 96' with a 351. I looked and didn't see any leaks, but did see a drip from my tailpipe, which I thought was normal. Is it possible that I am not firing on a cylinder and the unburned gas is coming through the tail pipe? Or could it be a pump problem?
Thanks
Mine has done that after skipping the tune up for too long. When have you replaced the Plugs, Cap, Rotor and wires? You may be getting a "Rich" condition because of a weak ignition system.
But also to be safe, I would crawl under the truck and closely inspect all of the fuel lines from the tank up to the engine. The fuel rails and injectors and the fuel filler neck.
Another possibility is the Evaporative Emissions System could have a leak. This system recycles and burns vapors from the fuel tank.
this happened to my chevy once, the injectors where letting gas into the block(dont ask me how) but I had to get all new CPI injectors for it, fixed it right up.
This is wierd. I just got the Bronco about a month and a half ago. It runs great with no hesitation or loss of power. It passed emmisions with flying colors. The previous owner maintained it meticulously and I have all the paperwork, so I don't think it is a tune up issue. I will check all the fuel lines and the evaporative system. Wouldn't it seem like a problem with fuel would have failed it during the emmisions test?
While the engine is running, check the fuel rails; front, back, and both sides. If it smells like gas in the vehicle, it is a possibility that the rails are leaking near the connections at the rear of the engine.
Yeah - this is a problem to look at immediately - I wouldn't drive it until the problem is found, or until you're satisfied it isn't a fuel line leak. If you're not comforable looking at it (knowing exactly what you're looking at) let a shop check it. A buddy of mine had a fuel odor years ago - next thing he knew he was called out to the parking lot to attend to his fully envolved vehicle - not fun. The fuel system stays pressurized for a long time after you shut it off, so there's any number of leaks that can occur. I'd get under that thing asap!!
Good Luck!
Cheggie
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