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Car pops and stumbles after injector upgrade

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Old Apr 27, 2003 | 08:11 PM
  #1  
CB99SS's Avatar
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From: Amarillo
Default Car pops and stumbles after injector upgrade

What would cause my car to pop and stumble after I installed my 30 lb SVO injectors? I also installed a walbro 255 fuel pump. It does it when I'm taking off from a light or stop sign. It doesn't do it all the time. Last night when leaving a local hangout. I got on the car pretty hard. Friends of mine said my car was poping then when I hit second gear it stopped.

I've changed my injector flow rate table using ls1 edit. How do you check injectors? Could my problem be from a injector putting excess fuel in the cylcinder? Could it be a bad spark plug or wire?

Thanks for the help.
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Old Apr 28, 2003 | 08:21 PM
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96SCTA's Avatar
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From: BLOOMFIELD, NY
Default Re: Car pops and stumbles after injector upgrade

what does your fuel preshure look like????
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Old Apr 28, 2003 | 09:56 PM
  #3  
CB99SS's Avatar
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From: Amarillo
Default Re: Car pops and stumbles after injector upgrade

It shows 64 psi. Then when I floor it it drop to 58 psi.

Thanks
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Old Apr 30, 2003 | 05:27 PM
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From: Las Vegas, NV
Default Re: Car pops and stumbles after injector upgrade

Why don't you try scanning the car dude; even a mechanic would want to see data before making a diagnosis .
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