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Old January 19th, 2021, 04:37 PM   #159
maverick9611
"a legend in my own mind"
 
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Name: maverick9611
Location: Augusta,Georgia
Join Date: May 2017

Motorcycle(s): 2015 moto guzzi norge(brownie),2020 aprilia dorsoduro,

Posts: A lot.
MOTM - Feb '18
Quote:
Originally Posted by DannoXYZ View Post
To use stick-coils, you need to test those as well by measuring voltage and sticking plugs into them and looking for spark. You've already done that test and spark is OK. Plus you will be introducing even more changes into system that can cause errors such as modifying harness to use stick-coils. We already spent tonnes of time troubleshooting your previous non-stock harness. Let's keep this one pristine and un-modified.

Try swapping plugs first, that way you don't have to collect way more additional data. If cold-cylinder moves to #1, you know plug's at fault. More concrete data than you have now.

Remember that measurements are 100% proof, takes precedence over anything else. That's how Greeks were able to prove a round Earth and Galileo a solar-system rotating around sun with collected data. Swapping perfectly-working parts with brand-new perfectly-working parts changes nothing and symptoms persist. It was measurements that found your faulty-harness last time after tonnes of time wasted swapping parts.


Looks like you've got fueling issue with #2 getting way, way too much petrol. Could be non-sealing float-valve increasing height. Drain both float-bowls into different containers and compare their volumes.

BTW - you're sure that carbs are fully OEM bone-stock? All factory jet sizes and needles? Both slide diaphragms good and they do same >pffft< and speed when manually raised and let go?
these carbs were sent twice to gordon. they are factory new. he has gone thru them twice over. i will not go into the carbs again!
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