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Posted by Trevor Grigg on January 14, 2004, 7:03 pm, in reply to "FORD ESCORT 1.4 1993 SPI & FIESTA 1.1 SPI 1993"
Hi John,Carry out procedure as indicated by J.W.you can then start to address the high O2 reading,providing you have not got a situation with falsified air, your problem is to weak a mixture,first connect up some form of equipment to monitor hego sensor transitions,then prise out the tamperproof bung from the pressure regulator and find a suiteable allen key.connect fuel pressure gauge,start and run engine up to approx 2500 rpm and note 02 sensor readings,you will probally see reading pegged at say 200 mv indicating lean mixture,then insert allen key into adjuster screw and turn clockwise untill you achieve lambda switching and a reduction in 02 and lambda reading,this becomes a bit of a balancing act john,because if you overdue it with the sherry you will have good lambda but co out of spec,its a compromise situation,you basically your trying to compensate for wear and tolerencing problems,and what i consider is a C..P fuel injection sytem anyway,i might add that i usually clean inj on asnu first john,but it depends what you have at your disposal.I hope this info is of some help to you,
Regards Trevor.
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