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bad sound...rough idle...stinky gas smell

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Old Jan 23, 2010 | 03:43 PM
  #1  
itsMikey's Avatar
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From: Scottsdale, AZ
Car: 89 GTA/93 S13/91 Si
Engine: 5.7 350 TPI
Transmission: 700R4
Axle/Gears: 3.23
bad sound...rough idle...stinky gas smell

my GTA has ran perfectly fine for the longest time..but all this week it has been raining so i didnt drive it all this week...it sat in the same spot everyday till today when it cleared up...tryed to fire it up to goto the store and nothing...
heres a link to video of what its doing....

http://www.youtube.com/watch?v=wQlxyUEJg_k
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Old Jan 23, 2010 | 06:12 PM
  #2  
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From: Collegeville PA
Car: 91 Z-28
Engine: 360TPI
Transmission: PA Racing 700r4
Axle/Gears: 3:73
Re: bad sound...rough idle...stinky gas smell

Check all your plugs and wires??? Maybe with all the rain you just had, some moisture crawled up in the distibutor cap and is causing it to misfire...

Might as well start with the basics...

GL
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Old Jan 23, 2010 | 06:31 PM
  #3  
itsMikey's Avatar
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From: Scottsdale, AZ
Car: 89 GTA/93 S13/91 Si
Engine: 5.7 350 TPI
Transmission: 700R4
Axle/Gears: 3.23
Re: bad sound...rough idle...stinky gas smell

I checked the wires and cap and jt seemed fine but what's the knocking noise?
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Old Jan 24, 2010 | 12:33 AM
  #4  
itsMikey's Avatar
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From: Scottsdale, AZ
Car: 89 GTA/93 S13/91 Si
Engine: 5.7 350 TPI
Transmission: 700R4
Axle/Gears: 3.23
Re: bad sound...rough idle...stinky gas smell

bump for the day..
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Old Jan 24, 2010 | 01:42 AM
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From: Temple City, CA
Car: 1990 Camaro RS
Engine: V8 305 TBI
Transmission: W/C T5
Axle/Gears: 3.08
Re: bad sound...rough idle...stinky gas smell

Sounds like cam(not distributor) timing's off. I don't think that's possible unless you skip a tooth on the timing gear though.

Any error codes?

The knock sounds pretty bad, misfires usually sound similar though. Check your distributor, rotor and all.

Keep us updated.
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Old Jan 24, 2010 | 11:57 AM
  #6  
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From: Heart of Dixie
Car: 1987 Camaro Sport Coupe
Engine: 355
Transmission: 700R4
Axle/Gears: 7.5 inch 342
Re: bad sound...rough idle...stinky gas smell

May have jumped time when you cut it off last time it was running good. Time for a timming chain and gears. If you dont do it your self don't drive it to the shop. Tow it.
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Old Jan 24, 2010 | 10:03 PM
  #7  
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From: Scottsdale, AZ
Car: 89 GTA/93 S13/91 Si
Engine: 5.7 350 TPI
Transmission: 700R4
Axle/Gears: 3.23
Re: bad sound...rough idle...stinky gas smell

Thanks guys.. I have no idea what to do and can't tell what it is...my grandpa said it might be the injectors or the spark plugs? Maybe... What should I do?
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Old Jan 24, 2010 | 10:35 PM
  #8  
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From: california
Car: 1989 Chevrolet Camaro iroc-z
Engine: 350 Tpi
Transmission: t5 Tranny
Axle/Gears: 3.08
Re: bad sound...rough idle...stinky gas smell

change plugs, wires, cap and rotor first. Just give it a nice tune up, That way it might fix your problem and your giving it a tune up anyways.
Start with the small things before you dig into it!
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Old Jan 25, 2010 | 01:28 AM
  #9  
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From: Temple City, CA
Car: 1990 Camaro RS
Engine: V8 305 TBI
Transmission: W/C T5
Axle/Gears: 3.08
Re: bad sound...rough idle...stinky gas smell

Well, if the cam timing's off, the easiest way to check it would be to pop off the valve cover and determine the firing order. Then take the #1 cylinder and rotate the engine by hand, via the crank pulley and watch the timing mark. When it reaches top dead center the exhaust and intake should both be open for a small period of time in overlap, you can tell by watching the rocker arms on the #1 cylinder. If neither rocker arm moves rotate the engine 180 degrees and try again.

If neither methods work then your cam timing is off. And we'll go from there.
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Old Jan 25, 2010 | 03:59 PM
  #10  
itsMikey's Avatar
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From: Scottsdale, AZ
Car: 89 GTA/93 S13/91 Si
Engine: 5.7 350 TPI
Transmission: 700R4
Axle/Gears: 3.23
Re: bad sound...rough idle...stinky gas smell

okay..will try that (kkingsrulee) but as for the tune up thing...idk if i would change the wires and cap...there only like 3,000 miles old..the cap and wires are both MSD..so..ill just try changing the plugs to start..any other ideas guys???
Mikey
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Old Jan 25, 2010 | 04:06 PM
  #11  
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From: Temple City, CA
Car: 1990 Camaro RS
Engine: V8 305 TBI
Transmission: W/C T5
Axle/Gears: 3.08
Re: bad sound...rough idle...stinky gas smell

I just don't see how it could be the spark plugs. It's just too highly improbable, it sounds as if maybe one spark plug is firing and it's knocking/pinging. Maybe if all the spark plugs went out at once besides one or two, but like I said that's very highly improbable. Definitely check the rotor out though, it's right under the distributor cap, look for any abnormality. They're cheap and easy to replace so start there.

Another possibility could be the ignition module, perhaps it got wet.

You know what though? I don't know much about TPI cars, I guess there could be some malfunction with the injectors, but it really sounds like there's a timing issue here.
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Old Jan 25, 2010 | 04:15 PM
  #12  
itsMikey's Avatar
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From: Scottsdale, AZ
Car: 89 GTA/93 S13/91 Si
Engine: 5.7 350 TPI
Transmission: 700R4
Axle/Gears: 3.23
Re: bad sound...rough idle...stinky gas smell

hmm...okay..will take a look at the rotor later...but i havent changed the spark plugs since i got it like.........5,000 miles ago...dont know how long there suppose to last...but i will definitly take a look at the rotor..thanks kkingsrulee
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Old Jan 27, 2010 | 03:51 PM
  #13  
itsMikey's Avatar
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From: Scottsdale, AZ
Car: 89 GTA/93 S13/91 Si
Engine: 5.7 350 TPI
Transmission: 700R4
Axle/Gears: 3.23
Re: bad sound...rough idle...stinky gas smell

rotor looks fine...i know its not electrical related...cuz not it wont start...it cranks but wont turn over...has to be fuel related...im thinking injectors...need to replace them anyways...can anyone shed some light on this?????? (inijectors)
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Old Jan 27, 2010 | 06:12 PM
  #14  
kkingsrulee's Avatar
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From: Temple City, CA
Car: 1990 Camaro RS
Engine: V8 305 TBI
Transmission: W/C T5
Axle/Gears: 3.08
Re: bad sound...rough idle...stinky gas smell

Okay, yeah, that makes sense.

I would repost this in the TPI section, you will get more information there about injectors.
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Old Jan 28, 2010 | 01:54 PM
  #15  
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Re: bad sound...rough idle...stinky gas smell

sounds like it could be injectors. If you are going to replace them anyway, get yourself a set of bosch lll's......you will be very happy. Besides, if you decide to do so take advantage and save yourself 10%. Just go to our website and type in TG11

www.southbayfuelinjectors.com
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Old Jan 28, 2010 | 02:11 PM
  #16  
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From: NWOhioToledoArea
Car: 86-FireBird
Engine: -MPFI
Transmission: T5
Axle/Gears: 3:42
Re: bad sound...rough idle...stinky gas smell

"bad sound...rough idle...stinky gas smell"

Sound like you own a muscle car
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Old Jan 28, 2010 | 03:52 PM
  #17  
itsMikey's Avatar
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From: Scottsdale, AZ
Car: 89 GTA/93 S13/91 Si
Engine: 5.7 350 TPI
Transmission: 700R4
Axle/Gears: 3.23
Re: bad sound...rough idle...stinky gas smell

yes, yes i do haha
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Old Jan 28, 2010 | 07:41 PM
  #18  
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From: Lincoln, Nebraska
Car: 1988 Firebird, 2000 GTP
Engine: 327
Transmission: 700R4
Axle/Gears: 9" posi, 4.11
Re: bad sound...rough idle...stinky gas smell

Somehow a lot of it sounds like a vacuum leak. But as bad as it's shaking you have to be running on much less than 1 cylinder. I'm going to assume you can't run on one bank but anything is possible. Are injectors on separate fuses for each side? Could one of the fuses have blown somehow? Are injectors sequentialy fired, or batch fired?
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Old Jan 28, 2010 | 09:21 PM
  #19  
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From: Heart of Dixie
Car: 1987 Camaro Sport Coupe
Engine: 355
Transmission: 700R4
Axle/Gears: 7.5 inch 342
Re: bad sound...rough idle...stinky gas smell

So did it jump time?
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Old Jan 28, 2010 | 09:23 PM
  #20  
BASSETT IROC 85's Avatar
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From: Heart of Dixie
Car: 1987 Camaro Sport Coupe
Engine: 355
Transmission: 700R4
Axle/Gears: 7.5 inch 342
Re: bad sound...rough idle...stinky gas smell

My Plymouth in high school did something like that and it was a broke push rod.
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Old Jan 28, 2010 | 09:34 PM
  #21  
itsMikey's Avatar
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From: Scottsdale, AZ
Car: 89 GTA/93 S13/91 Si
Engine: 5.7 350 TPI
Transmission: 700R4
Axle/Gears: 3.23
Re: bad sound...rough idle...stinky gas smell

okay..figured it out...my TPS was unplugged -_- thanks for everyones help...the knock is gone btw...i think i have a cracked rod and/or piston
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Old Jan 29, 2010 | 01:10 AM
  #22  
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From: Temple City, CA
Car: 1990 Camaro RS
Engine: V8 305 TBI
Transmission: W/C T5
Axle/Gears: 3.08
Re: bad sound...rough idle...stinky gas smell

No way???!?!?!

The knock went away, but you think you broke a piston?
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Old Jan 29, 2010 | 04:16 PM
  #23  
itsMikey's Avatar
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From: Scottsdale, AZ
Car: 89 GTA/93 S13/91 Si
Engine: 5.7 350 TPI
Transmission: 700R4
Axle/Gears: 3.23
Re: bad sound...rough idle...stinky gas smell

yeah its runnin like a champ again and yeah the knock went away completely. and now im not sure if i broke a piston :P guess we will find out in the future..
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