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Re: visible exhaust - what's it mean? Posted by Saana88 [Email]  (#207)  [Profile/Gallery]
(more from Saana88) on Fri, 12 May 2006 20:00:46
In Reply to: visible exhaust - what's it mean?, Brian, Wed, 10 May 2006 05:12:51 Members do not see ads below this line. - Help Keep This Site Online - Signup |
If it smells like gasoline, it's gone rich. If this is on startup only, your air mass meter or fuel pressure regulator may be faulty. Since your video says it's after the engine warms, then it's probably not the air mass meter.
It's also possible you've been bitten by someone's bad attempt to meet May 1 re-re-reformulated gasoline regulations. Last September I got bitten figuring that my '92 could stomach a tank of what turned out to be the worst regular unleaded I've ever found. (post-Katrina, twenty cents cheaper than anyone else, what could go wrong?) The gas had such low octane that any time I tried to get anywhere (accelerating past the slightest squeeze of the pedal) the engine would knock lightly (by design), the knock sensor worked its magic, the timing retarded into oblivion to offset the knock brought on by the terrible gasoline, and the engine would nosedive in a hurry if I wasn't careful. I don't have any vacuum leaks, and the air and fuel filters were clear.
My solution was to bite the bullet. I used that tank of aqua-gasoline up gently on the highway (cruising has a very low octane requirement), to 55 miles after the low fuel light stayed on, then refilled with name-brand super. As soon as I turned the car on and drove out the driveway of the gas station, the car was noticeably much better.
It's been a while since I s#!tlisted a gas station, but I've never been back to this once since, and I encourage others to avoid it.
Eight months later, I've been using gasoline from the same station from the same company of the same octane grade and had no problems at all. Lesson learned? Just like the latest election-year political nonsense, saving three cents a gallon is not significant, and in my opinion, not worth it. Wouldn't it be great if the solution turned into not putting huge seventies-esque large displacement motors in big heavy cars and trucks and using them to get groceries or sit in traffic instead of having to make and supply two dozen different gasoline formulations to the entire countries to force engines lean? Ligher pressure on the gas pedal and eliminating unneeded trips would do wonders, but this is the wrong place to suggest that.
Political tirade over, you probably got some bad gasoline as long as your fuel filter has been changed in the past two years and fuel pressure regulator does not leak. Someone at a refinery knows that gasoline should not be sold, and that's why the bargain retailers buy it, and it goes into your tank. It's not for a lack of technology governing your engine; electronic fuel injection has hardly changed since the mid-eighties.
Bad gas. Use it up or invite a neighbor to siphon your tank overnight when you're not looking, then change the fuel filter (if it's due) and refill with something good.
, Fri, 12 May 2006 20:00:46 <-- Viewing This Message
, Wed, 10 May 2006 06:26:46
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