sdibbers
Well-Known Member
I have HIF6 carbs on my 2000TC (bored to 2200).
Recently I’ve noticed that my idle is jumping around with different heat conditions. When sitting in traffic it’ll go up to 1,000rpm. If I pull up after a higher speed run she stays at 700-750 rpm.
When in traffic it’s almost like a switch. All of a sudden the idle speed will change without me doing anything. The carbs are in excellent condition absolutely no spindle leaks or float issues.
I have noticed that she gets a little leaner when the idle rises and I wonder if the bimetal jet brackets might be on their way out causing them to jump instead of move gradually?
I’d prefer to have no bimetal compensation so I think I’ll try and make a simple replacement. Modern fuel has such different densities compared to what they were designed for I think they make things worse, especially with the amount of ethanol in New Jersey fuel.
Does anyone have have thoughts on my ramblings?
Thanks in advance,
Steven
Recently I’ve noticed that my idle is jumping around with different heat conditions. When sitting in traffic it’ll go up to 1,000rpm. If I pull up after a higher speed run she stays at 700-750 rpm.
When in traffic it’s almost like a switch. All of a sudden the idle speed will change without me doing anything. The carbs are in excellent condition absolutely no spindle leaks or float issues.
I have noticed that she gets a little leaner when the idle rises and I wonder if the bimetal jet brackets might be on their way out causing them to jump instead of move gradually?
I’d prefer to have no bimetal compensation so I think I’ll try and make a simple replacement. Modern fuel has such different densities compared to what they were designed for I think they make things worse, especially with the amount of ethanol in New Jersey fuel.
Does anyone have have thoughts on my ramblings?
Thanks in advance,
Steven