TOPIC: Long drive killed engine? Carbs check out

newkzrider18 wrote:
took all the jets, holders, pipes, what have you, out and shot carb cleaner through them, then air compressed all around, and repeated that twice; so everything got it three times. Then I checked to make sure I could see through them, so I can clean it again I just don't know if that would even do anything.

Did you cleaned these holes in the main jet holder pipes and pilot jets too?

Do the thumb test on the slides.
Steve

Thumb test checked out; they're good!

I did make sure to clean those, but I have no shame cleaning the entire carb for the 4th time. Might as well, I'll be excruciatingly thorough...

I once had a problem with a sticky float. It would close and then stay closed. The gasket would hold it up in place. But it was only one float out of four.

If you have another set of carbs you might try switching them to see if the problem persists.

Hi,
Maybe a little far-fetched but have you tested so that the battery is fully charged and in god condition?
It could be a charging problem resulting in a weak spark.

Regards
Anders

OK overdue and long update.
Cleaned carbs AGAIN looking to make sure I could see through all the jets and those holes in the various pipes, sprayed through the carb body passageways as well.
Same problem. Hesitates with throttle.
No sticky floats.

So I ended up doing a compression test and it looks good. On the high side, (dry 170 left & right, wet 205 left & right), although the manual said "109-150 psi OR within 14 psi of eachother"....they are definitely within 14 psi of eachother, but not within the former range, so idk what the 'or' is about, but I'll probably clean the piston heads for good measure.

Anyway...I'm fairly certain now it is a carb adjustment problem.
I actually had it running and no blipping or hesitation, I could use the throttle however ONLY when the choke was fully used. If I tried to lower it at all, the bike hesitated and died like before.
Since all the fuel tests I did before checked out, I think there is some adjustment issue....

Would someone walk me through how to adjust the carbs?
I know the manual tells you to back out the pilot screw 2.75 turns then to change the idle adjuster until it is at appropriate range, but maybe because there are aftermarket exhaust on the bike the pilot srew amount of turns could be different?
And the shimming on the needle, it was at 3 before, and I changed it to 2, maybe I should go back.

Because I could at least get it to not hesitate when there was enough fuel, so it's pretty clear it is a fuel issue:
1) carbs clean (every single part)
2) floats not sticky
3) vacuum on petcock works
4) floats getting fuel = carb getting fuel
5) sliders are in working condition (air compression tested and thumb test)

Has to be an adjustment problem???
That's still so weird though, why would a long drive mess that up!?!?

Thanks if anyone reads this after so long!

Did you check the fuel level using the clear tube method described in the factory manual?

The fact that it runs better with the choke on is an indication of a very lean condition.
Fuel level is much too low.
Pilot circuit clogged.
Air leak.

correct, it all points to a lean condition.
Yes I did the clear tube method and it is within specs.

It's just, there are already 3 washers on the thing. That already seems like a lot. I am weary to add more to fix the lean condition.
Don't think it would be the pilot circuit as stated the carbs have been thoroughly cleaned not once, but multiple times.
Maybe the air leak. Though I did change the carb boots recently and they have no cracks.
Any other places to look for an air leak?

Your carbs are still clogged / dirty. I know you said you cleaned them but if it only runs on choke the pilot circuit is clogged or you've got a massive vacuum leak which is unlikely. I've had to take apart and clean some carbs numerous times in the ultrasonic cleaner before they were actually clean.

newkzrider18 wrote: (bought bike used, also has aftermarket exhaust on it so maybe this was an adjustment?)
I don't have the pods, I made the custom air filter that's on this site.

I suspect this is at least part of the problem. The jetting needs are changed based on the different airbox and exhaust.

I'd put the needle back to stock and then slowly block off intake flow using tape over the filter element a little at a time to see if that helps clear up the running problems. Assuming that helps you will then know where to focus your efforts (jetting.)

Hello,

Have you checked the timing advancer unit so
its moves easily.

Timing advancer is good.
I'll try the tape method after cleaning the pilot circuit. Unfortunately when I bought the bike I took it to a used parts store to see if they had the original air box (obviously they didn't since I made one) and we checked to see if they made a jetting kit for my bike but they don't :[

As for carb cleaning here's what I know:
I can see through ALL of the following (any holes on them included)
1) Pilot Jet
2) Primary Main Jet
3) Bleeder Pipe
4) Secondary Main Jet
5) Needle Jet Holder

Since I can see through all their various respective parts, I think it is safe to assume those parts are clean.
that being said, is there a passageway I can run wire through to see if it is clogged, or squirt something and it should come out somewhere?
Manual wouldn't/doesn't give any information on passageways.

Thanks for all the help everyone