Stalling issue on brand new 90cc - Page 2 - Yamaha Raptor Forum
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post #11 of 15 (permalink) Old 11-25-2019, 12:19 AM
I may be getting older, but I refuse to grow up!

 
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Let at least 1 gallon of fuel flow freely from the hose removed from the carburetor. If it slows down at all it may be caused by the gas cap vent. Loosen the cap and see if it speeds up. See the 2 holes on the bottom (inside) of the gas cap, those are the vents. Shake the cap empty of gas, cover one hole with a finger and blow thru the other, (Yuck, you can wipe it off with a prep pad). You should not be able to blow thru. Now, try to suck thru, there should be no resistance, allowing the tank to vent. If the tank doesn't vent it creates a vacuum and eventually the fuel doesn't flow. When the motor runs bad and dies, the tank will eventually loose the vacuum and restart.

Will the RPM's increase as it shuts off?

'19 Can-Am X3, RS Turbo, 172 HP, 1300x15 STU #2 paddle, Tribute front, DynaTec controller, cat delete, GTP blow off valve, custom flame wrap, Bent Metal windshield, Blazer wiper, rear window, 48in LED light bar, 14in LED light bar, GTP LED side lights, S3 shock tower brace, aluminum rear pull plate, 5K Badlands winch, dual batteries, 5ft lighted whips, Rugged radio and intercom, interior lights, rock lights, chase lights, over $200 additional switches, YES, street legal with dirt tires.

Last edited by DEZPERADO; 11-25-2019 at 12:45 AM.
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post #12 of 15 (permalink) Old 11-25-2019, 12:42 AM
I may be getting older, but I refuse to grow up!

 
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Quote:
Originally Posted by ryguy76 View Post
Fuel flows freely from the fuel line once petcock is turned to on position. I was really hoping to see it trickle.

How can I tell if the brass fitting that the hose connects to is partially clogged?


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The brass fitting allows fuel regulated by the needle and seat, opened and closed by the float, into the float bowl. Chances there isn't a problem there.

Another possibility is dirt thru the air cleaner getting in the carburetor. Remove the air cleaner and wipe the inside of the carb boot with a white paper towel. It should be clean. Even fine dirt could plug small jets.

'19 Can-Am X3, RS Turbo, 172 HP, 1300x15 STU #2 paddle, Tribute front, DynaTec controller, cat delete, GTP blow off valve, custom flame wrap, Bent Metal windshield, Blazer wiper, rear window, 48in LED light bar, 14in LED light bar, GTP LED side lights, S3 shock tower brace, aluminum rear pull plate, 5K Badlands winch, dual batteries, 5ft lighted whips, Rugged radio and intercom, interior lights, rock lights, chase lights, over $200 additional switches, YES, street legal with dirt tires.

Last edited by DEZPERADO; 11-25-2019 at 12:49 AM.
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post #13 of 15 (permalink) Old 11-25-2019, 11:35 AM Thread Starter
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Originally Posted by DEZPERADO View Post
The brass fitting allows fuel regulated by the needle and seat, opened and closed by the float, into the float bowl. Chances there isn't a problem there.

Another possibility is dirt thru the air cleaner getting in the carburetor. Remove the air cleaner and wipe the inside of the carb boot with a white paper towel. It should be clean. Even fine dirt could plug small jets.


Ok, will see what Iím able and comfortable to do myself. Iím stressing myself about it all though and slept very little last night. For a brand new machine, I kinda think I need to just dump it back at the dealer and let them do what needs doing to fix it. I paid full price for a working ATV.


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post #14 of 15 (permalink) Old 11-25-2019, 11:55 AM
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The dealer won't warranty dirt, and the gas cap is easy to check.

'19 Can-Am X3, RS Turbo, 172 HP, 1300x15 STU #2 paddle, Tribute front, DynaTec controller, cat delete, GTP blow off valve, custom flame wrap, Bent Metal windshield, Blazer wiper, rear window, 48in LED light bar, 14in LED light bar, GTP LED side lights, S3 shock tower brace, aluminum rear pull plate, 5K Badlands winch, dual batteries, 5ft lighted whips, Rugged radio and intercom, interior lights, rock lights, chase lights, over $200 additional switches, YES, street legal with dirt tires.
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post #15 of 15 (permalink) Old 11-25-2019, 11:58 AM Thread Starter
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Originally Posted by DEZPERADO View Post
The dealer won't warranty dirt, and the gas cap is easy to check.


I can definitely check that one. It behaved the same with engine running and gas cap off though.


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