93' Bonneville SSEI Smoking and running rough

Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's, Olds 98 91-96, Buick Lesabres and Park Avenue 91-96. Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.
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catladykaren
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Year and Trim: 1993 SSEI

93' Bonneville SSEI Smoking and running rough

Post by catladykaren »

My 93' Bonneville SSEI just started to run rough and hesitate when giving gas. It Idles fine. When driving there is some smoking and that all at once there will be a lot of blackish smoke. It than will stop and run fine. I have already given it a complete tune up. Can running with regular unleaded gas have an impact like this?
Better Half is "D"


'93 White Bonneville SSEI 96,551 miles Image Image
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gonzo4191
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Re: 93' Bonneville SSEI Smoking and running rough

Post by gonzo4191 »

you need to run as close to 93 octane as u can....
-Juan

No bonnie!
93 s10 ex cab: 2.8: t5: exhaust: tbi mods. 5.3, 76mm, and a D.r cam on a stand
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J Wikoff
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Re: 93' Bonneville SSEI Smoking and running rough

Post by J Wikoff »

When the PCM detects enough knock, it will dump in extra fuel and cut the timing back creating black smoke out the tailpipes (mostly unburnt fuel). Definately only run premium gas.
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WHITE WHINE - 1992 SSE Supercharged 236.26 ci (.040 Over) 15.090 at 90.2 MPH on old engine w/ slipping trans & melted O2 sensor - Gen 3 M62 and matching TB, Gen 2 Pully, Zillamotorsports Ported LIM, YT 1.72 Roller Rockers, SII FPR & Injectors, Hypertech Thermomaster chip w/ 160 Thermo, TransGo Shift Kit, Infinity/Pioneer Speakers & a 10" Alpine Type R Sub, all the watts, 140 amp Alternator, Ricepipe CAI w/ heatshield, Pilot Angel Eye Foglights, Clear Corners, '02 17" Chrome Bent 5's, Magnaflow F-Body Muffler and Hi-flo Cat, Ceramic Coated Ported Exhaust Manifolds, Fan Override, Monroe Reflex struts, red calipers
2009 G8 GT - Sport Red Metallic, loaded, SOLO Axlebacks, Rotofab Intake, Tuned, autodim mirror, removed intake manifold cover, HSV GTS triple gauge pod, two tone red-hot shifter and HSV SuperSport steering wheel, GXP rear sway bar and diffuser, 3.45 diff and various Camaro suspension bits, LED Taillights
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robertccach
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Re: 93' Bonneville SSEI Smoking and running rough

Post by robertccach »

93 octane cost more but your mpg will go up so in the long run it all comes out the same in the end plus your car will run better..
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gonzo4191
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Re: 93' Bonneville SSEI Smoking and running rough

Post by gonzo4191 »

a boosted engine needs higher octane to run properly and avoid engine damage
-Juan

No bonnie!
93 s10 ex cab: 2.8: t5: exhaust: tbi mods. 5.3, 76mm, and a D.r cam on a stand
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catladykaren
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Year and Trim: 1993 SSEI

Re: 93' Bonneville SSEI Smoking and running rough

Post by catladykaren »

thanks Is there anything that will help in the mean time? Or just run high octane?
Better Half is "D"


'93 White Bonneville SSEI 96,551 miles Image Image
'79 Bonneville Custom Convertable
93 Ford Festiva Green "Towstiva"
'91 Ford Festiva Red
'88 Ford Festiva Red
'92 Ford Festiva Teal "Nightcrawler"
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J Wikoff
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Re: 93' Bonneville SSEI Smoking and running rough

Post by J Wikoff »

Take it easy on the gas until you get a good tank of premium in there.
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WHITE WHINE - 1992 SSE Supercharged 236.26 ci (.040 Over) 15.090 at 90.2 MPH on old engine w/ slipping trans & melted O2 sensor - Gen 3 M62 and matching TB, Gen 2 Pully, Zillamotorsports Ported LIM, YT 1.72 Roller Rockers, SII FPR & Injectors, Hypertech Thermomaster chip w/ 160 Thermo, TransGo Shift Kit, Infinity/Pioneer Speakers & a 10" Alpine Type R Sub, all the watts, 140 amp Alternator, Ricepipe CAI w/ heatshield, Pilot Angel Eye Foglights, Clear Corners, '02 17" Chrome Bent 5's, Magnaflow F-Body Muffler and Hi-flo Cat, Ceramic Coated Ported Exhaust Manifolds, Fan Override, Monroe Reflex struts, red calipers
2009 G8 GT - Sport Red Metallic, loaded, SOLO Axlebacks, Rotofab Intake, Tuned, autodim mirror, removed intake manifold cover, HSV GTS triple gauge pod, two tone red-hot shifter and HSV SuperSport steering wheel, GXP rear sway bar and diffuser, 3.45 diff and various Camaro suspension bits, LED Taillights
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labonnevillastrangiato
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Re: 93' Bonneville SSEI Smoking and running rough

Post by labonnevillastrangiato »

catladykaren wrote:thanks Is there anything that will help in the mean time? Or just run high octane?
Depends on how much is in your tank right now. If you only have 1/4 tank, filling with premium will dilute it and it may even out. If it's 3/4 - full, perhaps an octane boost attitive will help?
I ran regular gas in my car once, and only because the station was sold out of premium and I was on empty. I will never do it again.

Adam
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00Beast
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Re: 93' Bonneville SSEI Smoking and running rough

Post by 00Beast »

No, octane boosters don't do anything. Run the tank as low as possible, and fill with premium. I ran one tank of regular through my 00 before I knew premium was the only thing I should run. It ran like crap, too.
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catladykaren
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Joined: Mon Jul 12, 2010 10:10 pm
Year and Trim: 1993 SSEI

Re: 93' Bonneville SSEI Smoking and running rough

Post by catladykaren »

I just took the car and had a diagnostic test done. The Master Flow sensor is bad. Wll be replacing that soon.

No more unleaded gas for me. Only premium.

THANKS!!
Better Half is "D"


'93 White Bonneville SSEI 96,551 miles Image Image
'79 Bonneville Custom Convertable
93 Ford Festiva Green "Towstiva"
'91 Ford Festiva Red
'88 Ford Festiva Red
'92 Ford Festiva Teal "Nightcrawler"
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