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jkv45 · April 7th, 2020, 01:03 PM

Carbs...carbs...carbs...

Something isn't right. Did you remove the idle mixture screws and clean the passages? O-rings on the screws look good? Set to 2.5 turns out for starters? Carbs bench synced they checked with gauges?

Did you check all the small holes in jet and jet holder? Is the Needle Jet (collar) in place? https://faq.ninja250.org/images/e/eb/Jim_carb_2.jpg

Rubber diaphragms in good shape? Slides rising and falling correctly?

Ducatiman doesn't like Starter Fluid (Ether) as it's bad for the plastic and rubber parts.

There should be a fuel filter inside the fuel line at the carb inlet that should be checked and replaced if needed.

Check that the petcock is flowing properly and the vacuum line to it is in good shape and attached firmly.

Read through this section for more ideas - https://faq.ninja250.org/wiki/Cleaning_the_carbs_1

April 7th, 2020, 01:03 PM	#2
jkv45 Rev Limiter Name: Jay Location: WI Join Date: Jul 2013 Motorcycle(s): '06 SV650n, '00 Derbi GPR, '64 CA77 Dream 305, '70 CL450 Scrambler, numerous dirt bikes Posts: A lot. MOTM - Jun '18, Oct '16	Carbs...carbs...carbs... Something isn't right. Did you remove the idle mixture screws and clean the passages? O-rings on the screws look good? Set to 2.5 turns out for starters? Carbs bench synced they checked with gauges? Did you check all the small holes in jet and jet holder? Is the Needle Jet (collar) in place? https://faq.ninja250.org/images/e/eb/Jim_carb_2.jpg Rubber diaphragms in good shape? Slides rising and falling correctly? Ducatiman doesn't like Starter Fluid (Ether) as it's bad for the plastic and rubber parts. There should be a fuel filter inside the fuel line at the carb inlet that should be checked and replaced if needed. Check that the petcock is flowing properly and the vacuum line to it is in good shape and attached firmly. Read through this section for more ideas - https://faq.ninja250.org/wiki/Cleaning_the_carbs_1