ProSimex
XS650 Addict
right ok, Ive posted on this before a few months ago and only got links to the tuning guide. I don't need the tuning guide, I've a dozen copies of it and frankly it aint helping.
So i bought some VM34s a few years ago, swapped out needle, needle jet, main, and idle, dumped the air jet. This baby was bullet proof, pulled hard, ran smooth, easy start AKA I would have rode it across country any day, was my daily rider. 185 main, 25 idle, needle set in middle clip, needle and needle jet... i forget but god damn it worked!
This spring i start it up and holy christ the smoke!!! Terrible terrible smoke. Ive had the carbs apart a dozen times, cleaned every obvious passageway, fooled around with float height, dropped the needle, raised the needle. Shes running insanely rich, as in 3/4 of a sporty tank in 25 minutes rich. At anything under a 1/2 to 3/4 throttle she sputters like its bogging down, just drowning in fuel. Ive done cam chain, valve, and ignition adjustments, even swapped out the coils and condenser to be sure it wasnt a ignition issue. So the issue here isnt ignition or valves, done that, its not jetting, the jest were correct last year, and its not fuel as I've run a tank of fuel from every station in town, no result.
Ive cleaned the needle valves well with a swab and carb cleaner, there is no noticable debris or varnish sitting in there.
plugs show sooty sooty black
When the bike is first started there is a few seconds of clean running then smoke starts coming out bad, at this time bubbles are seen rising up through the fuel lines. Is it possible that the needle valves or more worryingly the needle valve seats are worn out after only a couple years? is there any way to correct this, can i cut a new seat into the body? Am I barking up the wrong tree? Im at my wits end here.
So i bought some VM34s a few years ago, swapped out needle, needle jet, main, and idle, dumped the air jet. This baby was bullet proof, pulled hard, ran smooth, easy start AKA I would have rode it across country any day, was my daily rider. 185 main, 25 idle, needle set in middle clip, needle and needle jet... i forget but god damn it worked!
This spring i start it up and holy christ the smoke!!! Terrible terrible smoke. Ive had the carbs apart a dozen times, cleaned every obvious passageway, fooled around with float height, dropped the needle, raised the needle. Shes running insanely rich, as in 3/4 of a sporty tank in 25 minutes rich. At anything under a 1/2 to 3/4 throttle she sputters like its bogging down, just drowning in fuel. Ive done cam chain, valve, and ignition adjustments, even swapped out the coils and condenser to be sure it wasnt a ignition issue. So the issue here isnt ignition or valves, done that, its not jetting, the jest were correct last year, and its not fuel as I've run a tank of fuel from every station in town, no result.
Ive cleaned the needle valves well with a swab and carb cleaner, there is no noticable debris or varnish sitting in there.
plugs show sooty sooty black
When the bike is first started there is a few seconds of clean running then smoke starts coming out bad, at this time bubbles are seen rising up through the fuel lines. Is it possible that the needle valves or more worryingly the needle valve seats are worn out after only a couple years? is there any way to correct this, can i cut a new seat into the body? Am I barking up the wrong tree? Im at my wits end here.