My wife's 91 Buick LeSabre smells of sulfur when she backs up her car. And
without replacing everthing I wanted to know how to troubleshoot this
problem. How do I check the leaky injectors, oxygen sensor, coolant sensor,
Not sure how to check those, but I would imagine if any of your sensors or
such had a problem you would be getting a check engine light. It may be wise
to remove and clean your oxygen sensors just for the heck of it. I doubt
your injectors need cleaning or replacing unless you have really high miles
on the car or it has sat for long periods of time without use.
Is the smell there all the time or just for the first few minutes after she
starts the car? If it's just after you start the car it's just because the
car is running rich. Also may be incomplete compustion if your ignition
system isn't up to snuff (old plugs, wires, cap, rotor, etc.), but that
would leave the smell there all the time.
I picked up a car from a dealler that got it from an old man. I know that
is the same old story, but it only have 85thou kms on it. The car is a 91
and I bought it in 98. So it could have been setting around.
My '82 Z-28 has smelled like that since new. Even with a new cat
replaced. Seems like GM cars have that
distinct exhaust odor.
Oh by the way, it recently passed with flying colors the emissions test.
The guy could not believe a car that old did so well. Go figure, stinks
but still passes.
But almost every time I have smelled that, it has been from a GM car.
Do they still use the "honeycomb" technology?
If you have Speedway or Marathon or Ashland available locally, try a few
tanks and see if it still smells. I guaranteee they make good gas. Just get
it from a high-volume station.
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