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LB9 hesitation when given gas and no low end power

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Old Aug 5, 2010 | 11:37 AM
  #101  
ASE doc's Avatar
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From: Aurora, OR
Car: 87 IROC Z28
Engine: 355 cid TPI
Transmission: Custom Built 700R4 w/3,500 stall
Axle/Gears: QP fab 9" 3.70 Truetrac
Re: LB9 hesitation when given gas and no low end power

Ive replaced TPI injectors a few times with out disconnecting the fuel lines. Remove the bolt that attaches the assembly to the head, right where the fuel lines attach. This gives you room to raise the rails enough to pull the injectors out. They come out hard so be prepared and be sure to rotate the lock tabs so they release. You can toss these tabs once you have the injectors out. They are unnecessary. Be sure to lube the injector o-rings with vaseline when installing them so they go together smoothly.
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Old Aug 30, 2010 | 11:34 PM
  #102  
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From: Puyallup Washington
Car: 84 15th anniversary Trans Am
Engine: 305 H.O. L69
Transmission: 700R4
Axle/Gears: 3.73
Re: LB9 hesitation when given gas and no low end power

Found out recently that the car I was planning to fix has a bent unibody.... so needless to say this swap wont be happening... after all the BS I went through too... anybody needs some 19lb Bosch IIIs? $160 lol never used!
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Old Aug 31, 2010 | 02:03 AM
  #103  
Chevy86 IROC-Z's Avatar
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From: Far West
Car: 1986 Camaro Z28 IROC-Z
Engine: 350 Tuned Port Injection, for now.
Transmission: 700R4
Axle/Gears: Posi - 3.23
Re: LB9 hesitation when given gas and no low end power

Man I feel bad bro. SO what are you going to do with the car? You still gonna keep it? How did you find out that the unibody was bent?
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Old Aug 31, 2010 | 07:55 AM
  #104  
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Joined: Dec 2008
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From: Puyallup Washington
Car: 84 15th anniversary Trans Am
Engine: 305 H.O. L69
Transmission: 700R4
Axle/Gears: 3.73
Re: LB9 hesitation when given gas and no low end power

Originally Posted by Chevy86 IROC-Z
Man I feel bad bro. SO what are you going to do with the car? You still gonna keep it? How did you find out that the unibody was bent?
Had a guy come out and look at it. it was in a serious accident and thats why my body panel fitment was really bad. I am just surprised the tops didnt leak like a faucet. Atleast the 15th anniversary will get restored sooner now though! look on the bright side my friend.
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Old May 1, 2012 | 10:31 PM
  #105  
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Re: LB9 hesitation when given gas and no low end power

i had the same promblem well close to it and i did some research and found out i needed to turn the screw on top of my carb counter clockways as well as adjust my idle speed screw on the drivers side bottom of the carb. i have a QJ carb just to point out. AND NOW I SPIN TIRES EASY.
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Old May 1, 2012 | 10:36 PM
  #106  
Chevy86 IROC-Z's Avatar
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Joined: May 2009
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From: Far West
Car: 1986 Camaro Z28 IROC-Z
Engine: 350 Tuned Port Injection, for now.
Transmission: 700R4
Axle/Gears: Posi - 3.23
Re: LB9 hesitation when given gas and no low end power

Originally Posted by vargascedric50
i had the same promblem well close to it and i did some research and found out i needed to turn the screw on top of my carb counter clockways as well as adjust my idle speed screw on the drivers side bottom of the carb. i have a QJ carb just to point out. AND NOW I SPIN TIRES EASY.
Uhhhh. Actually your issue was very different. To be exact, 200% way different. The car inwhich this thread was made is for a LB9 (305 TPI). Your issue falls within the lines of carb. This is all apples. Not apples and oranges.
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