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Running SUPER sluggish!!! HELP PLEASE!!!

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Old Feb 13, 2010 | 09:00 PM
  #1  
ssmtyper's Avatar
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Running SUPER sluggish!!! HELP PLEASE!!!

ok so i picked up an 86 iroc that had been sitting for 3 years... Initially I had to tow it home. Got the radiator and fan back in, new battery, freash gas and some "heet" a few cranks later and a shot of carb cleaner, it fired right up... it ran ok but was miss firing pretty bad... So I change the plugs and wires, cap and rotor, fuel filter, engine oil, tranny fluid, fuel filter and air filter. Wha La, it ran really decient had a little power(still didnt seem like enough) and was scooting around town ok.

Well over the past few times I have driven it, it seems to be getting more and more "slugish" (smells like its running pretty rich) it still drives ok at a slow speed or even if you just increase speed slowly. When I press the gass to the floor it makes no difference in speed, rpms, nothing but dumpin more gass apperantly...

It has what I assume is the original lg4 with quadrajet. the car is a 5spd

any help is greatly appriciated!!!
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Old Feb 14, 2010 | 05:57 AM
  #2  
Ilike2stroke383's Avatar
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Joined: Feb 2010
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From: in my car
Car: 1987 Gta Trans Am
Engine: 383 Stroker
Transmission: t-56
Axle/Gears: 3.47 02 SS rear end
Re: Running SUPER sluggish!!! HELP PLEASE!!!

did you rebuild the carb? Thats a long time to sit up.. probably a vaccum leak at the very least.
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Old Feb 14, 2010 | 10:00 AM
  #3  
Blind Driver's Avatar
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Joined: Nov 2009
Posts: 419
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Car: 1986 Trans Am
Engine: 5.0
Transmission: 700r4
Axle/Gears: beats me
Re: Running SUPER sluggish!!! HELP PLEASE!!!

Did you set the timing?
Check the fuel filter again.

I fought vacuum leaks after I got my T/A running. It was sitting for several years as well.

Might try some Sea Foam down the carb.
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Old Feb 14, 2010 | 05:39 PM
  #4  
stroker_SS's Avatar
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Joined: Nov 2005
Posts: 670
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From: Michigan
Car: 1984 Camaro Berlinetta
Engine: 355
Transmission: Th-350
Axle/Gears: 3.23
Re: Running SUPER sluggish!!! HELP PLEASE!!!

My suggestion is to find a book on q-jets and study it before you even touch the carb.
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Old Feb 14, 2010 | 09:08 PM
  #5  
ssmtyper's Avatar
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Re: Running SUPER sluggish!!! HELP PLEASE!!!

Thanks for the fedback everyone.

I am definatly not carb knowlegable ( i usaually fix up newer cars) I will track down all my vacumes and make sure they are good and going to the correct place. And I was already considering running some sea foam so i'll do that too.

Does anyone else think clogged cat when they read about this trouble???
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Old Feb 15, 2010 | 07:17 AM
  #6  
stroker_SS's Avatar
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Joined: Nov 2005
Posts: 670
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From: Michigan
Car: 1984 Camaro Berlinetta
Engine: 355
Transmission: Th-350
Axle/Gears: 3.23
Re: Running SUPER sluggish!!! HELP PLEASE!!!

Well, here is a tool to test for any restrictions in the exhaust.

From what I've read 2-3psi is normal for a stock exhaust.
http://qualitytoolsforless.com/Produ...ProductID=2690
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