Originally Posted by
BigRed
Ok, having some issues with the 5-port. I reset the needle settings back to factory and started re-tuning. For the life of me the low end is boggy. I can either richer or leaner with no change on the bottom end. I'm hearing from other people that it could be a carb issue. Any thoughts?
Make sure the idle gap is set at .7 to 1 mm. Set both needles to flush and start from there. If it's lean bogging it will be that the HSN is too lean, or maybe a blockage in the HSN jet. Remove needle and flush by blowing fuel through the needle housing. Then reinstall needle and set HSN to flush.
If you have the long needle carb, you need the HSN set rich (flush to start with) to make it work properly.
Let us know what happens.