Rough running after warm up

[Berlin Bob]

I am having a problem with this super x alittle...I have loaded tune 8352..it starts and runs fine
up until warm up..then it won't idle...spits and sputters...have the K & N ,pick up tube,oil cooler
and tune...all battery joints are tight...have new plugs in it...fuel pump is new,...injectors are new
I have taken down engine and had crank balanced previuosly...put back together,timed it and hear it is ...any help    seems like I missed something...443-783-0920    Berlin  Bob

[wytfut]

Wow Bob..... Tookit all the way down eh?

Well do you have the superxtuner on a computer? I'd be interstedto know what it reading.

Being I'd only know what Jamie has given me in past experiences for the the superxtuner/reader, I really recommend you give him a shot here. But I'll give it a shot, if you have that info.....

To me right off it sounds like the stepper may be an issue. Jamie visits this site time to time.... I'll put a bug in his ear....   

Anyone else wanna jump in feel free to help Bob out!

[Traveller]

Hey Bruce, I woke up with a bug in my ear this morning, very disconcerting.

Bob, What you describe can be caused by a lack of compression and I would test that first. But to be thorough also make sure that the O2 sensor, TPS and IAC are functioning properly. If you don't find anything out of spec. check the fuel pressure. Remember to hold the throttle wide open when conducting the compression test and do it when the engine is hot.

Jamie

[wytfut]

Lol.....   Thanx Jamie

[Jumper]

How's the rubber cap on top of the throttle body??
Jumper

 

[Berlin Bob]

Hey guys  thanks for all the help...been thru your suggestions..and for the life of me..and hears were it gets stupid....after all I did,and everything is possitive....on all your tests...it was the
stupid fuel pump after all...now I have another question, how can you test the fuel pump without
it being on the bike ... is there a way    by the way I popped it off and took it for alittle scoot...running just fine !!!!   oh  this is the basket case bike   # 1374 from florida that Jumper delivered to me    thanks everyone  for all your help !!!!   Berlin Bob

[wytfut]

Outstanding.....    I suppose there is..... But for me it would require a bit of jerry rigging....

Being shade tree and all,  with no store bought testing equipment.... Hee hee hee

[Jumper]

Maybe to test the pump while on the X, Make a pressure gauge/bleed off valve set up with about a foot or two of high pressure fuel line. bleed it back into the tank... Cycle the pump, record cut off pressures or see if the pump bleeds down when it builds up pressure. Also, there was a tool in the E-H tool kits that you could plug int the fuel pump plug and it would run the pump. Handy if you filled the tank up and THEN decided to pull the tank...
Just random thoughts..
Jumper