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1989 iroc z 350tpi HELP

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Old May 4, 2014 | 06:22 PM
  #1  
trailerparkking's Avatar
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From: Maine
Car: 89 iroc z
Engine: 350 tpi
1989 iroc z 350tpi HELP

After driving for 5 mins, its starts cutting out when I put a load on it. If I hold the throttle sounds like it wants to die out almost like it isnt getting fuel? Anyone else have this problem need some help here I put a high velocity fuel pump and bigger fuel rails and it didnt get rid of it and does anyone know the stock flow rate on the injectors?

Last edited by trailerparkking; May 4, 2014 at 06:29 PM.
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Old May 4, 2014 | 06:48 PM
  #2  
vetteoz's Avatar
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Re: 1989 iroc z 350tpi HELP

https://www.thirdgen.org/forums/tech...formation.html



Originally Posted by trailerparkking
its starts cutting out when I put a load on it.
https://www.thirdgen.org/forums/tech...s-dumbies.html

Originally Posted by trailerparkking
I put a high velocity fuel pump and bigger fuel rails and it didnt get rid of it
Is not like a carb engine ; the fuel is controlled by the computer programming
Your changes have little effect on the fuel supply

More important ; What is your fuel pressure @ the rail ?

Originally Posted by trailerparkking
does anyone know the stock flow rate on the injectors?
22lb
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Old May 4, 2014 | 09:14 PM
  #3  
trailerparkking's Avatar
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From: Maine
Car: 89 iroc z
Engine: 350 tpi
Re: 1989 iroc z 350tpi HELP

Ill check tomorrow just bought the car 2 days ago and a 15hr trip with no sleep has left me no time to tear into it too busy catching up on sleep. What would be a good set of injectors to get and what would be a good flow rate for them? Sorry im somewhat of a newbie only 17 so this is my first rodeo with a vehicle like this!!!
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Old May 4, 2014 | 09:27 PM
  #4  
trailerparkking's Avatar
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From: Maine
Car: 89 iroc z
Engine: 350 tpi
Re: 1989 iroc z 350tpi HELP

Is not like a carb engine ; the fuel is controlled by the computer programming
Your changes have little effect on the fuel supply

More important ; What is your fuel pressure @ the rail ?

What Should I be reading for fuel pressure? And my radiator is spanked too could this have something to do with my problem? Its wicked boggy after I give it a hot supper a few times temperature gauge stays right where it should but maybe the thing dont work and shes just getting too hot. Im gonna replace a few things and see what it does i read up on here and most people say its like 4 or 5 things and they are all cheap fixes. Ill do her up good and see how shes feeling after I give her a little love.
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Old May 5, 2014 | 08:32 AM
  #5  
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From: San Antonio, Texas
Car: 1987 Trans Am GTA
Engine: 5.0 TPI
Transmission: Auto
Re: 1989 iroc z 350tpi HELP

Question for you..... when it's cutting out abd you hold the gas pedal down to keep it running, is there a ton of smoke coming out of the exhaust ??
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Old May 5, 2014 | 02:14 PM
  #6  
trailerparkking's Avatar
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From: Maine
Car: 89 iroc z
Engine: 350 tpi
Re: 1989 iroc z 350tpi HELP

Originally Posted by TX-SleeperC5
Question for you..... when it's cutting out abd you hold the gas pedal down to keep it running, is there a ton of smoke coming out of the exhaust ??
No smoke and if I hold the gas pedal it wants to cut out if I let off it goes to a high idle
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