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Thread: Diagnostic Socket on Mk2 16v

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  1. Diagnostic Socket on Mk2 16v 
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    Hi

    I'm struggeling finding the diagnostice socket on my 1990 16v mk2. I live over seas where the only VW dealer is 100km away. The problem is that it coughs and splutters with no power to drive (will tick over) after 10km so I can't get there easily. Any idea anyone? I've replaced the intank fuel pump.

    Thanks

    Paul
     
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  2. Re: Diagnostic Socket on Mk2 16v 
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    there isnt a diagnostic socket on a 16v mk2, as the injection etc is all Kjet mechanical!

    i just posted this elsewhere on here, borrowed from volksdevil - it'l give you some pointers


    ***********************

    Try cleaning out the inlet tracts of oil and the airflow flap.
    If the engine isn't hunting when cold or hot, the CO is correct. 16Vs run
    best at 2.0 % CO.
    To achieve 2.0%, disconnect the famous "red lead" behind the coil (after the
    engine is at temp), pull off the breather hose and block the airbox hole.
    Start the engine and the revs should plummet, if they don't, the idle valve
    is ******* and you're idling off the bypass screw alone. Now, with the
    engine running, turn the idle screw up until you get 950rpm +-50.
    If the idle wanders or is lumy (engine visibly rocking), insert your 3mm
    allen key into the CO screw and turn it anti clock to weaken. Just prior to
    the engine cutting out, turn the key clockwise in 1/8th turn increments
    until the idle smooths out. Eventually, the engine should settle to a nice,
    steady idle. This will be 2.0% or very close to. Switch off and reconnect
    everything. Take it out for a run and when you dip the clutch, the tacho
    needle should gently fall to 1000rpm, not plummet. If after all that it's
    still missing and rough, investigate air leaks.

    write up by DarrynK (cgti)

    note:exhaust gas analiser should be used for perfect c/o settings.
     
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  3. Re: Diagnostic Socket on Mk2 16v 
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    intake fuel pump?? there are two pumps on your car and if its spluttering the chanses are the high pressure pump has gone,which is a result of the primary lift pump (in the tank) failing....a definate symptom of the high pressure pump falure is a loud buzzing noise from it,also spluttering on cornering and fast accelleration
     
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