August 27, 20195 yr Author comment_582665 Pic 2&4 are front carb, 1&3 rear Link to comment https://www.classiczcars.com/forums/topic/62728-fouling-spark-plugs-su-carbs/?&page=2#findComment-582665 Share on other sites More sharing options...
August 27, 20195 yr comment_582666 the front nozzle needs to be lowered and the rear raised. Adjust nozzle height by turning Idle Adjust nut (6) (knurled knob) Link to comment https://www.classiczcars.com/forums/topic/62728-fouling-spark-plugs-su-carbs/?&page=2#findComment-582666 Share on other sites More sharing options...
August 27, 20195 yr Author comment_582667 Is there a specific height recommended? Link to comment https://www.classiczcars.com/forums/topic/62728-fouling-spark-plugs-su-carbs/?&page=2#findComment-582667 Share on other sites More sharing options...
August 27, 20195 yr comment_582668 to set both nozzle heights, turn Idle Adjusting Nut all the way up then turn it down 3 full turns. Link to comment https://www.classiczcars.com/forums/topic/62728-fouling-spark-plugs-su-carbs/?&page=2#findComment-582668 Share on other sites More sharing options...
August 27, 20195 yr Author comment_582669 6 minutes ago, 240260280 said: to set both nozzle heights, turn Idle Adjusting Nut all the way up then turn it down 3 full turns. Not sure 3 turns was enough looks pretty short here's some photos, these nozzles seen a bit different than my other ones Link to comment https://www.classiczcars.com/forums/topic/62728-fouling-spark-plugs-su-carbs/?&page=2#findComment-582669 Share on other sites More sharing options...
August 27, 20195 yr comment_582670 Great photos! Now it looks the same for front and rear. (needle tip showing amount is same) Try it. If the plugs need more colour, lower the nozzles 1/2 turn (3.5). If it runs too rich, raise the nozzles 1/2 turn (2.5). Link to comment https://www.classiczcars.com/forums/topic/62728-fouling-spark-plugs-su-carbs/?&page=2#findComment-582670 Share on other sites More sharing options...
August 27, 20195 yr Author comment_582671 4 minutes ago, 240260280 said: Great photos! Now it looks the same for front and rear. (needle tip showing amount is same) Try it. If the plugs need more colour, lower the nozzles 1/2 turn (3.5). If it runs too rich, raise the nozzles 1/2 turn (2.5). Awesome I'll give it a shot still gonna run a quick sand on the nozzles and carb cleaner plus I need to change the oil, still have a ton of fuel in it! Appreciate the help I'll get back to you tonight or sometime tomorrow ? Link to comment https://www.classiczcars.com/forums/topic/62728-fouling-spark-plugs-su-carbs/?&page=2#findComment-582671 Share on other sites More sharing options...
August 27, 20195 yr Author comment_582675 3 hours ago, 240260280 said: Great photos! Now it looks the same for front and rear. (needle tip showing amount is same) Try it. If the plugs need more colour, lower the nozzles 1/2 turn (3.5). If it runs too rich, raise the nozzles 1/2 turn (2.5). Alright so I drained the fuel cleaned the spark plugs and started it, got a horrible back fire and dies when given throttle, I tried turning up the fuel and it didnt seem to help? Out of curiosity when the needle goes lower that is more fuel correct? Link to comment https://www.classiczcars.com/forums/topic/62728-fouling-spark-plugs-su-carbs/?&page=2#findComment-582675 Share on other sites More sharing options...
August 27, 20195 yr comment_582679 Lowering the nozzle adds more fuel. The next thing to check is fuel level in the bowls and correct needle valve functioning. Link to comment https://www.classiczcars.com/forums/topic/62728-fouling-spark-plugs-su-carbs/?&page=2#findComment-582679 Share on other sites More sharing options...
August 27, 20195 yr Author comment_582704 7 hours ago, 240260280 said: Lowering the nozzle adds more fuel. The next thing to check is fuel level in the bowls and correct needle valve functioning. Alright I'll get on that when I get back again haha Link to comment https://www.classiczcars.com/forums/topic/62728-fouling-spark-plugs-su-carbs/?&page=2#findComment-582704 Share on other sites More sharing options...
August 28, 20195 yr comment_582733 There's a beautiful set of SUs ready to bolt on for sale on here. Figure how much rebuild kits are plus your time then compare to $250 with a 24/7 tech guy. The one that's helping you now. Post that advert link @240260280 Link to comment https://www.classiczcars.com/forums/topic/62728-fouling-spark-plugs-su-carbs/?&page=2#findComment-582733 Share on other sites More sharing options...
August 28, 20195 yr comment_582741 Link to comment https://www.classiczcars.com/forums/topic/62728-fouling-spark-plugs-su-carbs/?&page=2#findComment-582741 Share on other sites More sharing options...
Create an account or sign in to comment