Topic: Damaged Carburetor Jets

[76 Supersport]

Good afternoon all,

I have searched to no avail. I think my question is either too basic or such a no brainer no one has asked.

I am having issues with a non starting issue motor cranks and after a while backfire and motor hates  choke. Spark on all plugs and when removed they are soaked.

Got it running on two cylinders with carbs now empty and using a spray of carb cleaner in the air box.

Carbs are cleaned and I have ordered new float valves since the rubber tip on several looked rough.

Now for my actual question. When I cleaned out the carbs I notice the pilot jets base (slotted end) chewed and stripped.

Does the end of the jet have a big influence on the fuel getting to the engine? Seems like the fuel level is higher than the base so it should t influence it too much.

[BenelliSEI]

Mains or idle jets? Unless the damaged end is actually blocking the hole, it shouldn’t really affect the performance. Don’t be afraid to clean the slot with a tiny file.

[76 Supersport]

Pilot jets specifically. This is on keihin cvk and the pilots are recessed quite a bit. I guess I’m leaning back toward a high fuel level causing a extremely rich condition.