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MG MGB Technical - Mystery odor
|Took the 74 B on a 120 r/t today. Car ran fine, with no strange noises, obvious leaks or any other unexpected glitches. But we could smell something that seemed to be either|
c) gear oil
I haven't changed anything, but this is the first time I noticed the smell.
I haven't drained or topped off the tranny or diff in a while, so I don't suspect that. When we stopped, the odor seemed stronger at the rear of the car.
We got home a couple of hours ago and the smell is gone.
|Don - Check the gaiters on either end of the stering rack for leaks. Cheers - Dave|
|Hypor smells rather sulpurous, check the level in your diff, you may have a leak.|
|Those are both good suggestions, but I can't see any leaks from either of those. Also, there's no oil on the floor under either of them.|
Anyone else care to weigh in?
|Those are the only two places that have gear oil in them. You might also check the pinion seal where the steering shaft enters the rack housing. A leak there will also produce the smell. You can have a leak anywhere on the steering rack enough to smell but not enough to leave spots on the garage floor. Another thing that will produce a stink, is a engine oil leak that drips down on the exhaust manifold or the hot exhaust pipe. Chers - Dave|
|Since you asked for someone else to "weigh-in". Fast food on long trips can also cause a problem.|
|A far out thought. |
I had something like this happen to a midget. It was squirrels that had stuffed nuts in the exhaust. It stank and smoked a little bit then it went away never to return.
|I always suspect it's a bit of gear oil out of the rear tranny seal spitting on the exhaust and burning off. Again, I think it's accumulating on the exhaust around town, then burning off when I occasionally take it out for a run. That's when I smell it for a short time.|
Might be the same for you.
|If the smell is gone, as you indicate, then forget it.|
|Paul Hunt 2|
|Check the inside of your rear rims and drums. Gear oil may be leaking past the seal and soaking into the shoes then burning off.|
|Smell of sulphur from the rear ... Had the same when my alternator was overcharging due to faulty regulator, resulting in the batteries overheating and the acid boiling inside. A new alternator fixed the problem.|
This thread was discussed between 22/07/2007 and 24/07/2007
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