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07-23-2017
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#21 |
 
Join Date: Feb 2012
Location: Ledyard,CT
Posts: 8,049
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Re: Sulpher Smell
Was the cat nearby?
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07-23-2017
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#22 |
Join Date: Apr 2013
Location: Toronto
Posts: 716
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Re: Sulpher Smell
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07-23-2017
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#23 |
 Join Date: Aug 2015
Location: Magnolia, Texas
Posts: 884
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Re: Sulpher Smell
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07-23-2017
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#24 |
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Join Date: Apr 2013
Location: Toronto
Posts: 716
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Re: Sulpher Smell
Did the cat come back ?
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07-23-2017
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#25 |
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Join Date: Aug 2015
Location: Magnolia, Texas
Posts: 884
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Re: Sulpher Smell
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08-15-2017
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#26 |
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Join Date: Apr 2013
Location: Toronto
Posts: 716
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Re: Sulpher Smell
No more smell . Took the Z on the highway last week and took it to 6500 rpm a few times in 3rd gear and I think that cleaned it out . Shifting below 3500 rpm with these cars is not good for the injectors I figure or perhaps it was just some bad fuel like I mentioned before ...
Sent from my LG-H831 using ZR-1 Net Registry mobile app |
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08-15-2017
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#27 |
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Join Date: Feb 2013
Location: Tallmadge OH
Posts: 116
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Re: Sulpher Smell
Back in the 70's when cats were a new thing and carburetion was less than ideal this was a lot more common. Might signal an a/f ratio problem.
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08-21-2017
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#28 | |
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Join Date: Jul 2010
Location: Woodstock, Ontario, Canada
Posts: 1,275
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Re: Sulpher Smell
Quote:
Remember the Sunoco 94 octane we used to get up here? It was a true E0 gasoline with a true 94octane(Research + Motor Octane)/2. In 2010 Sunoco was bought by PetroCan, but they still offer and E10-94 octane fuel. I used to fill up with Sunoco 94, then drive to the dragstrip. Get there at about 6pm, swap on the slicks and start making passes. As I burned off fuel and as the air got better ETs would drop and speeds would swell. That fuel in conjunction with an LT4 knock module and my PCM recalibrations. I once bought some 104 octane unleaded at the track, man did that fuel smell nice. It was 4 bucks a liter though, and that was when gas was $0.50/liter for 87. There were many GM cars/trucks that had the sulphur smell issues. Sometimes an Italian-Tuneup would help them(ie taking the vehicle out and doing some WOT acceleration runs to get the exhaust hot while at the same time getting as much exhaust volume moving through the cats while at temp. Getting a sulphur smell during a dead cold startup shouldn't be cat related as nothing is going on in the cat until it lights off at several hundred degrees. Unless there is a sulphur compound that has settled in the cats and the initial hit of exhaust is merely moving it out of the exhaust into the air where you can detect it. Sorry Tripler, I just read that you did take her out for an Italian tuneup. Glad it worked for you.
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peace Paul ZR-1 Net Registry Member #1494 Last edited by Hog; 08-21-2017 at 11:19 AM. |
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08-21-2017
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#29 |
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Join Date: Apr 2013
Location: Toronto
Posts: 716
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Re: Sulpher Smell
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08-22-2017
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#30 | |
 
Join Date: Apr 2007
Location: Lake Bluff, IL
Posts: 2,051
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Re: Sulpher Smell
Quote:
Yep, had to do that with my old '68 Hemi Road Runner. First couple of passes and it looked like a B-52 taking off, but once the carbon was blown out it ran very well. --Bob
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2016 Long Beach Red Z06 #10281 "POPS Z" 1995 Polo Green #409 "WARP TEN"--Haibeck 350/510 package, 4.10s, Hurst, Stock Exhaust with QTP Cutouts --Sold but still running strong 1993 Quasar Blue #161 "HIL KING" --Sold but still running strong, now with more than 120,000 miles 1967 Marlboro Maroon/Saddle Corvette Coupe 300 hp/4-spd --Sold a long time ago ZR-1 Net Registry Founding Member #95 NCM Lifetime Member Favorite Quote--Attributed to Mickey Thompson: "Too Much Horsepower is Almost Enough" |
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