Minor Popping noise from exhaust

[Jerome P.]

Today I noticed a occasional, but minor, popping from the right side exhaust while the engine was running at idle.

Any thoughts as to what is going on?

[Joe L.]

Re: Minor Popping noise from exhaust

Today I noticed a occasional, but minor, popping from the right side exhaust while the engine was running at idle.

Any thoughts as to what is going on?

Jerry-----

One possibility would be a slightly malfunctioning diverter valve. Easy to check. Disable the pump (remove the belt) and seal off the diverter valve vacuum source from the carb. If the popping ceases, you've found the problem. If not, it's something else.