Re: Tillotson Carb Question

[cajuncook1]

Possible crankcase leak or poor crankcase negative pressure. The negative crankcase pressure shuttles the fuel mix charge into the cylinder for combustion.

Missing or torn carb to crankcase gasket?

Another consideration is obstructed exhaust ports with carbon or your exhaust housing leg is obstructed with trash…wasp or mouse nest or ant pile dirt from laying about.

If flow is obstructed or limited going out then it does not get sucked in.

Not saying that is your problem, but it needs to be considered when other usual culprits are ruled out.