I quick fixed my lack of engine power I had at DR....flipped on half choke and its flying once again. Why didn't I think of that on race day??? *bangs head against wall*
Scotto, your engine is running lean which is why it runs better with the choke half way on. Get that main jet drilled for the next race and you'll be flying with your choke off. Send me a PM if you need any help with the process.
Or assuming it is a CNS carb just seal it up and set the needle.
I have it down to a science now and just happened to take a couple of pics this morning on yet anther I did.
I just use a cheap black silicon sealant and fill in the the T-groove on the carb from the inside like this.
1. Pop out the rubber gasket.
2. Use something like a piece of a cut off zip-tie as a trowel and just fill in the groves from the inside and wipe off the slop with a Q-tip or the like.
3. Look into the carb held up to some light and when you see no light it's tight.
4. Done properly it looks like this from the outside.
5. In the mean time take you round white plastic spacer and fill it's grove in too.
6. Give them and hour or more to set, then put the gasket back in, slide in the plastic spacer with it's grove pointing down, and tighten it up.
7. Finally, move your Pac Man clip down (towards the pointed end) to the bottom setting, which is as rich as it will go with the needle up as far as it will go out of the jet.
IF the problem is pre-jet air leaks choking and bigger jet size compensate but not as well (IMHO). A sure sign of course is choking helps.
Bet she wouldn't idle with the choke where it 'runs good' either.
When ALL air in goes across the jet and adjusting there is the best, it actually uses the design of the carbs inner body to atomize the mix.
Yell at me at you want, but to me even suggesting someone even try to drill a jet to treat a different problem cause has to be...
Lets just say you might want to try the easy logical fixes before you start drilling into small precision pieces like a jet with your hand drill.
When ALL the air going into your head passes over the carbs venture (jet) THEN you can think about a bigger jet or tapering the needle in some if you still need more fuel is what I suggest.
