thecurryman
XS400 Member
Alright fellas I am in need of some advice as I have reached something that has stumped me.
All this started with h pipe and pods, fresh battery and synced carbs after each change. Checked valve timing, good. Checked ignition timing, good.
Last post was about loss of power, turned out the bowl gasket was blocking a passage causing that. Modified gasket and it runs but still maxes at 3k.
Started, 145 main and 42 pilot, raised needle one clip position boggy and too rich ro run well. This also put the needle in the last clip position.
Returned needle to previous position, 147.5 main and 45 pilot, same thing too rich to run.
Swapped pilot out for 42 and left the larger main, runs but won't make it past 3k.
Ended up getting the stuff to rebuild the stock air system. Emgo filters and airboxes fitted, same thing. Pegs at 3k.
Did some plug chops and noticed that the lean condition was coming back to more stoic.
Some things I noticed while I had the carbs off, left side carb needle is bent. Must have been from whatever got sucked into the carbs from the PO. Cant find one to save my life, not sure how much performance will be affected but I know it will wear eventually and that will cause issues. Thought maybe the auto advancer for the ignition timing was sticking so I looked into that and it moves freely and returns fine. Even advanced the timing to see if that would help but it didn't. Also of note, riding it when you start to crack the throttle in 1st its not firing evenly and smoothly and it's a little sluggish till it hits 2k and then it pulls pretty hard. Also when you are pushing at 3k, you can feel it pull a little and then stop, pull a little and then stop.
I've got the jets and needle to go bone stock if I have to but I dont think that needle is gonna work.
Truly scratching my head on this one and im at the point to where if you point at a rock and say look under that I will. Thanks in advance for any help you can send my way
All this started with h pipe and pods, fresh battery and synced carbs after each change. Checked valve timing, good. Checked ignition timing, good.
Last post was about loss of power, turned out the bowl gasket was blocking a passage causing that. Modified gasket and it runs but still maxes at 3k.
Started, 145 main and 42 pilot, raised needle one clip position boggy and too rich ro run well. This also put the needle in the last clip position.
Returned needle to previous position, 147.5 main and 45 pilot, same thing too rich to run.
Swapped pilot out for 42 and left the larger main, runs but won't make it past 3k.
Ended up getting the stuff to rebuild the stock air system. Emgo filters and airboxes fitted, same thing. Pegs at 3k.
Did some plug chops and noticed that the lean condition was coming back to more stoic.
Some things I noticed while I had the carbs off, left side carb needle is bent. Must have been from whatever got sucked into the carbs from the PO. Cant find one to save my life, not sure how much performance will be affected but I know it will wear eventually and that will cause issues. Thought maybe the auto advancer for the ignition timing was sticking so I looked into that and it moves freely and returns fine. Even advanced the timing to see if that would help but it didn't. Also of note, riding it when you start to crack the throttle in 1st its not firing evenly and smoothly and it's a little sluggish till it hits 2k and then it pulls pretty hard. Also when you are pushing at 3k, you can feel it pull a little and then stop, pull a little and then stop.
I've got the jets and needle to go bone stock if I have to but I dont think that needle is gonna work.
Truly scratching my head on this one and im at the point to where if you point at a rock and say look under that I will. Thanks in advance for any help you can send my way
