Golf L4-1588cc 1.6L DSL SOHC Turbo (1985)
Note
Pay no attention to figures displayed in rpm window of testor VW 1367
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check OXS-duty cycle and CO reading
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OXS-duty cycle must read 25-65% (23-59~ dwell) (reading must fluctuate)
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CO must read between 0.3-1.0%
If CO reading is higher than 1.0% with OXS-duty cycle reading correct
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check following and repair as necessary
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leaking exhaust system
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leaks in intake system
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uneven fuel distribution by fuel distributor
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injector spray pattern incorrect