Do different pilot jets matter?

Question

I recently on my 81 suzuki gn400 (single cylinder/carb) rejetted to a 45 from a 42.5. The stock had a jet with holes spiraling around it, but the new one does not. Runs a bit better, not great. Do you think this makes a difference?

Answer 1

you put the wrong pilot jet in there

Answer 2

I'm with the guy that said wrong jet.

If its not identical except for the o*****e, its wrong.

Answer 3

yes, this is changing the was the fuel flows, especially under acceleration.

Answer 4

Yes

Answer 5

Are you at high altitude?

You have leaned the mixture.

If it runs better, you might be OK, but check spark

plug(s) for evidence of it being too lean.