Hi folks. I’ve been gradually getting my desmogged FJ60’s Weber carb jetted after living with a vacuum leak for too long. Here’s the question, briefly:
What is the preferred idle speed for a 2F engine? There seem to be a range of answers out there. I’m not sure if the general Weber tuning spec applies (700-900rpm) for my engine.
More background, if you’re still reading: I bought this truck about a year ago. PO had desmogged it and put in the Weber (I know, I know, lots of hate for Weber carbs on Mud. Don’t blame me!) I finally replaced the stupid 2-piece manifold adapter with a one-piece unit from JT Outfitters. The telltale vacuum leak whistle went away. But now the jetting was off. Got a jet kit and started tinkering. It is now to the point where it starts pretty easy, idles fine, cruises real nice just off idle, and it isn’t so bad at WOT. Minimal stumble when I get into the main circuit, once things are warm. BUT … idle speed is 500rpm, which seems low. I live at 7000 feet, and I really can’t go much leaner on the idle jets. Just not sure if I’ve got it as good as it can be or if I should try something else to bring up the idle speed.
Thanks!
What is the preferred idle speed for a 2F engine? There seem to be a range of answers out there. I’m not sure if the general Weber tuning spec applies (700-900rpm) for my engine.
More background, if you’re still reading: I bought this truck about a year ago. PO had desmogged it and put in the Weber (I know, I know, lots of hate for Weber carbs on Mud. Don’t blame me!) I finally replaced the stupid 2-piece manifold adapter with a one-piece unit from JT Outfitters. The telltale vacuum leak whistle went away. But now the jetting was off. Got a jet kit and started tinkering. It is now to the point where it starts pretty easy, idles fine, cruises real nice just off idle, and it isn’t so bad at WOT. Minimal stumble when I get into the main circuit, once things are warm. BUT … idle speed is 500rpm, which seems low. I live at 7000 feet, and I really can’t go much leaner on the idle jets. Just not sure if I’ve got it as good as it can be or if I should try something else to bring up the idle speed.
Thanks!