intermittent popping thru exhaust on idle only

no pops on accel or decel. im hesitant about adjusting the 44,s. could it be anything else.

Bob - There has been a lot of discussion on this issue by people with more knowledge than myself. Do a search in Knowledge. For now, make sure your carbs are tightened properly. Any air leak could cause this. The second thing I would do is make sure your 44's are balanced. If the are not, popping will occur. You will need a flow meter to do this. It's not hard to balance them, but you need to do a little reading before you start. Gordon Nichols has a good explanation on how to do this. Good luck.

I HAD A CLOGGED IDLE JET
I USED A BOTTLE OF LUCAS IN MY GAS EACH FILL UP AND AFTER THE 3RD FILL UP IT CLEARED OUT

That sounds like good advice..

But if it only happens when the engine is cold and it disappears after 5 minutes of idle you need to check the valves,,

One might be getting too snug at the rocker.


Oh if it has points? also suspect a fried condenser from leaving the key on.. that won't go away after a warm up. It will only get worse with pop and cracking noises..

I've done that one too..

Barnco!
Go see Greg........ The weather's right, I'm your ride!

I'm gonna make up a sample t-shirt to sell. A silhouette/gray scale image of a 44 Weber on the front and the words, "What's that popping sound?" across the back.

Betcha I sell a million of 'em . . .

...or 'Popasaurus'

...or 'Sir Popsalot'

...or 'Pop,pop, do run run'