Runs but not good!

So my 1985 interceptor 700 vf700f was running good then out of the blue started to back fire at wide open, and was just dumping fuel (watching the gas gage drop) just wanted to see if anyone has had this issue! Any help would be great! Clean carbs and good spark and plugs and fresh gas too

 

Jammed float needle

 

Maybe but i checked that once before! Any other idea's?

 

Only dies out when it sits at idle, slowly dies out till it stalls, get a little warmer then i would like to but what can i do for that? Wired fan to switch, i turn it on after a few minutes of riding, like after i pull out if the driveway! All help is welcome! Thanks

 

Plus ot has a new fuel pump too!

 

Is there a return line after the pump to avoid pressuring the system and pushing the floats down?

 

No there was never one there!

 

Was it running OK before the fuel pump swap?

 

Yes was running just fine

 

when it starts to die try the choke, it will point to a carb issue

 

pull the plugs and look for an improper black condition on one or more. u sure choke plungers are at zero when running and that cable isn't sticking ?

 

If it was good until you changed the fuel pump...I'd look at that first. You should be using a very low pressure pump, too much will overcome the float valves and flood the carbs.

 

It is a low pressure pump amd it has been on there the whole time, i think it is a coil that went bad, i ordered a new one! Seems to lost spark on one side of the motor! No choke on this bike! It runs really good when cold and after it warms up is when i am have problems with it! Bike was a rescue, guy was going to crush it! I put new carbs seals and did all new carb slides to!

 

a bike that starts without choke and gets funky when warm may be running too rich, why i suggested you inspect plugs, also air filter.

 

Air filter is dry and and don't smell like gas! Plugs don't look bad! Will post a picture here in a bit

 

That's a old one and one i took out! All look the same!

 

Hmmm, the one in the pics looks OK, the red is just from fuel additives...not sure I'm following here. When you said "dumping" fuel in the first post, did you mean on the outside of the engine?

 

No u can hear it drop and fall on it's face above 6000 rpms then after u back off ot it seems to run ok but will not idle when i come to a stop! Moved coils around and problem seemed to move with on coil, ordered new one so waiting for it to come and will see what happens! Thanks for all the help!!!if this doesn't fix it i will be back asking

 

This is a video of the bike
Can't get video to upload

 

Any one on here know how to upload a video?