low power problem

When I take off on my XJ700 it seems like it doesnt have enough power but after it gets going it runs like a scalded dog.Do you think it could be a generator problem or coils are week ?

 

Probably fuel / mixture.

 

you think adjusting the pilot screws will help?

 

Yes, once you have cleaned & synced the rack.

 

cleaned them up last week I guess turn and read plugs now

 

Wow, I was just going to post something similar. Mine was running, but now that I set the floats and replaced the mixture screw O-rings, it doesn't want to run so good.

Is there a ballpark # of turns out for the mixture screws? Of course the exact setting depends on a bunch of variables, but it would be great to know if I'm even close. The only documentation I could find was "start with 3 turns out" in Dynojet's kit instructions, but I think they might say that generically for every model.

I started at ~3.25 out, and I'm up to ~4.5 turns now, and it still seems very, very lean.

 

2.5 out is a good starting point. Then colortune to get it just right.

 

I guess that's a "no" to my question then! :lol:

 

did you synchronize the carbs ?That is very important. If you put a dyno jet kit in they need to be synchronized ,and did you change the air filter

 

my problem turned out to be the ignitor box.

lack of power and somewhat misfiring condition untill it 4000 rpm. then she ran like a champ.

the ignitor box wasn't changing the timing like it's supposed too. it was stuck in high rpm mode.

it's supposed to be somewhere in the neighborhood of around 10 - 12 degrees at idle. 35 degrees at the higher rpm. and mine was running at 35 constantly.