Andy Edwards Posted September 18, 2012 Share Posted September 18, 2012 HiFinally after 5 years of rebuilding i've got my GT6 MOT'd :). while it was being tested i asked the tester to check the emissions for me, and the CO2 was over 9%! As i was rebuilding the engine i decided to change the carbs to new SU's, but didnt know what size needles to fit, as its running so rich obviously the ones in it are wrong, does anyone know the correct size/part number please?Many ThanksAndy Quote Link to comment Share on other sites More sharing options...
RedRooster Posted September 18, 2012 Share Posted September 18, 2012 Have you adjusted the jets? Quote Link to comment Share on other sites More sharing options...
Andy Edwards Posted September 18, 2012 Author Share Posted September 18, 2012 Yes the jets are adjusted as far as they can be. Quote Link to comment Share on other sites More sharing options...
Royboy66 Posted September 18, 2012 Share Posted September 18, 2012 Andy. Take the needles out and have a look what letters are stamped on them, ppl can then advise whee to go from there :-) Quote Link to comment Share on other sites More sharing options...
RedRooster Posted September 18, 2012 Share Posted September 18, 2012 But if it was an MOT tester the engine was at idle, the jets may just need adjusting up. Quote Link to comment Share on other sites More sharing options...
Fizzy Posted September 18, 2012 Share Posted September 18, 2012 Was the choke on during the test? Quote Link to comment Share on other sites More sharing options...
piman Posted September 18, 2012 Share Posted September 18, 2012 Hello Andy, "Yes the jets are adjusted as far as they can be."That's not how they work. Nominal setting is the jet adjuster nut two full turns down from being adjusted flush with the jet tube. New carburettors would have been set to that anyway, do you know if they are the correct specification for your car?Alec Quote Link to comment Share on other sites More sharing options...
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