Rotten egg smell - Page 3 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 12-12-2013, 04:11 PM   #21
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most of the time the regulator wont throw a code
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Old 12-12-2013, 04:44 PM   #22
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Do you ever experience hard starting after the car has sat awhile?
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Old 12-12-2013, 04:46 PM   #23
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No. Thats the problem. It runs like it just came off the showroom. Just stinks.
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Old 12-13-2013, 09:07 AM   #24
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When you checked the FPR, did you leave it disconnected for a minute or two to be sure the diaphragm is not ruptured?

Check this video, at around the 1:50 mark.
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Old 12-13-2013, 04:38 PM   #25
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GM insisting it is fuel with too much sulphur
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Old 12-13-2013, 05:27 PM   #26
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Quote:
Originally Posted by palmdc8 View Post
GM insisting it is fuel with too much sulphur
I didn't know sulphur had an effect on MPG. Sounds like they don't want to spend time diagnosing it.
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Old 12-13-2013, 05:28 PM   #27
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Which still leaves us guessing our heads off until either A. The FPR is verified, or B. a decent scanner that can show live data is connected to the car. Other than that, we can spend pages and pages of what this could be.
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Old 12-13-2013, 07:46 PM   #28
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The local mechanic/ postman/drunk says the clicking noise is coming from the resonator
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Old 12-13-2013, 07:59 PM   #29
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any chance that is where the foul odor is coming from?
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Old 12-13-2013, 09:15 PM   #30
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No. The smell is coming from the cat converter because it can only process so much exhaust. Whatever it can't process, = sulfur smell.
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