I've got a miss

[rolncoal82]

98.5 got a miss in it once it warms up. When it's cold it idles smooth but once it's warming up it slowly gets a miss to it, it's never a consistent miss either. I've changed injectors unplugged sensors cracked injector lines one at a time with no change. It runs great under a load just does it when in park or neutral. I've seen in the search that jlwelding was having the same problem just curious if he ever figured his out. Thanks for any help!!

 

[rolncoal82]

No one ???

 

[Timbeaux]

How old is the VP?

 

[rolncoal82]

That I don't know it has a fass and carries 17lbs but don't understand why it only does it after it warms up