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August 20th, 2005, 06:07 PM
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Gray powder in tail pipes?
I have been running 110 leaded for about a tank and 1/2 now. Love the smell and it is the only high-octane close to me.
I was cruising the Woodward Dream Cruise area last night for about 4 hours which means I was basically idling for that long. I stopped to get a bite to eat and noticed that the insides of my tailpipes were very light gray. I wiped my finger in there and it came off easily. My Check Engine light came on towards the end of the cruise but went out when I got on the highway. It would come on again a few times on the way home but the car ran fine. is all the gray powder and the CE light from the leaded fuel? I got a denso O2 sensor as I heard they last longer but I have only put on about 350-450 miles on this one.
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87 GN - 41k http://clubs.hemmings.com/frameset.c...buickturboclub http://community.webshots.com/album/80578595oKYpqO     
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August 20th, 2005, 09:59 PM
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The high octane leaded will make a tailpipe burn"white". It doesn't take very much leaded fuel to eat an o2 sensor, I've done it before on 5 or so gallons. The lead will do a number on your plugs too after a while, deposits etc.
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86 T- .40 over stock bottom end w/forged pistons, 205/205 Reeds,pump and hotwire, TT chip, TE45a, Cottons fmic, Champion irons, Champion fuel rails, Precision plenum, Magnacore wires, Accufab afpr, 60lb Siemans, RJC aluminum pulleys and Champion alt relocation and a/c delete bracket, 3"ssthdp and cutout, 3" single shot, CK Performance stage2 trans w/3200-3400 Pro-Torque l/u converter, brake and deep pan, Eaton posi, PTE turbo saver, Trans plus and 3"Ls1 maf, 90/10 fronts, Gabriel upgraded stock rears, Global West rear sway, UMI lca's, no front sway. Rabbits foot on rear view mirror. Vanity: JUSTASIX 
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August 21st, 2005, 10:07 AM
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I hooked up Tlink and drove about 40 miles. Towards the end of the drive the CE light came on for a few seconds. I looked at Tlink and the O2 Cross counts were not changing. I stabbed the throttle and let off and they resumed rising by 30-40 counts.
Every now and again they would freeze on a number for a little while then pick back up again. Car runs fine evern when the CE light is on and I have 12 more gallons sitting in the garage. I will just run all that through and replace the O2 sensor at that time.
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87 GN - 41k http://clubs.hemmings.com/frameset.c...buickturboclub http://community.webshots.com/album/80578595oKYpqO
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August 22nd, 2005, 01:31 AM
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A heated o2 sensor "supposedly" lasts longer when running leaded race fuel. So I've been told !
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'87 Turbo T with T Tops, new engine brought to life 11/14/05!! 212 roller, ported cast iron heads,TE61 turbo, Duttweiler necked IC, Hi-Z injectors, Commander chip, TH 3" DP, Hooker dump tube back exhaust, Precision Industries converter , trans and transbrake by Performance Transmission Las Vegas, (Thanks Len !) Best times as of 5/19/06: ET of 11.72, MPH of 118.55 ! now for some traction devices!!!! 
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August 22nd, 2005, 04:43 PM
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Quote:
__________________
86 T- .40 over stock bottom end w/forged pistons, 205/205 Reeds,pump and hotwire, TT chip, TE45a, Cottons fmic, Champion irons, Champion fuel rails, Precision plenum, Magnacore wires, Accufab afpr, 60lb Siemans, RJC aluminum pulleys and Champion alt relocation and a/c delete bracket, 3"ssthdp and cutout, 3" single shot, CK Performance stage2 trans w/3200-3400 Pro-Torque l/u converter, brake and deep pan, Eaton posi, PTE turbo saver, Trans plus and 3"Ls1 maf, 90/10 fronts, Gabriel upgraded stock rears, Global West rear sway, UMI lca's, no front sway. Rabbits foot on rear view mirror. Vanity: JUSTASIX
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