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Just replaced fuel injectors Tuning Question

Discussion in 'Technical Q&A' started by f68, Feb 17, 2014.

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  1. f68

    f68 Karting

    Jan 4, 2014
    75
    Orange Co California
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    Rodz Of Ages
    #1 f68, Feb 17, 2014
    I Just replaced my fuel injectors and seals in my1982 308 GTSI. What i need to no is what is the process before starting the car ? Or do i just start it and start tuning ?And if so whats the process of tuning these engines. Hope that made sense
    Thanks
     
  2. Brian Harper

    Brian Harper F1 Rookie
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    Feb 17, 2006
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    San Jose area
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    Brian Harper
    #2 Brian Harper, Feb 18, 2014
    Unless you (or someone else) messed with the CO screw on the fuel distributor there is nothing to do. Start it up and drive away.

    I'm not sure what you have in mind for tuning.
     
  3. f68

    f68 Karting

    Jan 4, 2014
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    Orange Co California
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    Rodz Of Ages
    #3 f68, Feb 18, 2014
    Is the CO screw the big allen screw? If so my neighbor did now its running rich he thought he was adjusting an Edelbrock carb lol
     
  4. Brian Harper

    Brian Harper F1 Rookie
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    #4 Brian Harper, Feb 18, 2014
    Big allen screw on the throttle body is for idle adjust. I don't recommend just turning all of the adjustments hoping for the best. Do a search for K-jet setup and read them. European cars through the '70's and '80's used this system and there's lots of good stuff out there on them. This site, but also Volvo, VW and Porsche sites, have really good instructions on how to make sure all is right with the Bosch CIS.
     
  5. 2NA

    2NA F1 World Champ
    Consultant Owner Professional Ferrari Technician

    Dec 29, 2006
    18,221
    Twin Cities
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    Tim Keseluk
    #5 2NA, Feb 18, 2014
    There's more to it than can be described here. If you're not familiar with CIS mechanical injection there's a good chance of making things worse by fiddling with it. A fuel injection test set and an understanding of what it will tell you is required. Beyond idle adjustment, you'd be wise to let someone (probably not the neighbor) do it. I'll bet where you live there are a few experts nearby.
     
  6. f68

    f68 Karting

    Jan 4, 2014
    75
    Orange Co California
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    Rodz Of Ages
    #6 f68, Feb 18, 2014
    thanks for the advice guys
     
  7. hanknum

    hanknum Formula 3

    Nov 1, 2003
    2,050
    Santa Barbara
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    Henry
    #7 hanknum, Feb 18, 2014
    Did you just replace the injectors with OEM size or did you go larger? Are there modifications to the engine?
     
  8. f68

    f68 Karting

    Jan 4, 2014
    75
    Orange Co California
    Full Name:
    Rodz Of Ages
    #8 f68, Feb 18, 2014
    Hi hanknum i went with the Bosch Fuel Injector #0 437 502 047 with the brown Plastic Insert with little green Oring
     

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