Non exsistant low end

So after installing my 65 metra kit on the freespirit with the 16.16 Del, I have noticed I have almost no low end power, even with the high compression head. It dosnt bog, but 4 strokes like crazy. Once it hits around 18-20mph it FLYS as the revs pop up. What could be needin of adjustin?

Re: Non exsistant low end

Brendan Chenelle /

Plug chop and see what you're jetting is like!

Also could be adjusting the mid range mix. I don't know about dell'orto, but i'd look at the needle setting on my bing.

Re: Non exsistant low end

agree. Mess with your needle settings. If this does not improve completely, investigate different idle jets and atomizers.

Re: Non exsistant low end

Could it possibly be an airleak too?

Re: Non exsistant low end

no needle on an SHA, air leaks are lean at idle and go rich when you top out, usually... i think you're looking at an ignition problem.

Re: Non exsistant low end

fish_SHARK /

might be jetted really high, do a plug chop and see

Re: Non exsistant low end

Did you adjust your timing?

Re: Non exsistant low end

Not since I installed the kit. but it was running in tune when I had the stock set up. I did a plug chop a couple of times, Its got blackness on it after a pull at WOT so I already know its rich, Im going to run it this way until I put about 400miles on. Revs fine on stand, with load is when It has issues at the bottom end.

Re: Non exsistant low end

fish_SHARK /

sounds like its just bogging due to the high jetting. though like you said its being broken in.

Non exsistant low end

I agree with Graham. My kit will wind out with a low load but climbing hills its doggy. I know thta my spark is weak and thats my problem. You also have a fat jet causing it to run rich but your problem is weak spark if I had to guess.

Re: Non exsistant low end

hmmm, if its a weak spark what would I need to replace to fix this? Maybe a new coil?

Re: Non exsistant low end

open your points slightly.

Re: Non exsistant low end

yeah check your timing and point gap.

i was dealing with similar symptoms recently - 4 stokey low end and then fast when it got up to speed - i thought it had to do with gas/air ratio so i spent a ton of time trying different jets and needle settings with no change at all in performance. today i opened the point gap a little and it took right off.

even if you haven't touched that area recently, a different cylinder affects the length of your stroke right? which will in turn effects timing? maybe not, but either way different cylinders seem to have their preferences.

Re: Non exsistant low end

stall the clutch

Re: Non exsistant low end

How much did you open your point gap by. I just got a new bosch super thinking it would fix the ultra slow start and the fact that i have to peddle up hills, but it didn't.

Re: Non exsistant low end

double checked for exhaust leaks?

« Go to Topics — end of thread

Want to post in this forum? We'd love to have you join the discussion, but first:

Login or Create Account