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I got a 2012 Yamaha R1 was running great turned it off an…

Customer Question
I got a 2012...

I got a 2012 Yamaha R1 was running great turned it off an now when i try to start it turns over but wont start an the check engine light starts flashing

Mechanic's Assistant: Does the light stay on, or does it blink?

Blink till i release starter button

Mechanic's Assistant: What is the model of your '12 motorcycle?

Raven

Mechanic's Assistant: Are you fixing your bike yourself? What have you tried so far?

Yes an nothing so far just figured id ask forms first before i start

Mechanic's Assistant: Anything else you want the mechanic to know before I connect you?

I can spray starter fluid in intake an it will start for a second so i know its getting fire just not fuel

Submitted: 7 months ago.Category: Motorcycle
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Answered in 4 hours by:
12/19/2017
Motorcycle Mechanic: Louie, Technician replied 7 months ago
Louie
Louie, Technician
Category: Motorcycle
Satisfied Customers: 13,487
Experience: 25+ yrs. experience
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Hi and welcome to JustAnswer. My name is ***** ***** I'll be assisting you with your question regarding your "...2012 Yamaha R1..." I apologize for the extended wait time you experienced, I've only just come online now and would like to assist you with your question.

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Motorcycle Mechanic: Louie, Technician replied 7 months ago

Initially, let's try check and review the basics; proposed preliminary try (if have not been done) is to determine if the fuel pump would prime at first turn on of ignition switch. If not, then a potential fuel pump/relay issue. If yes, then delivery/injector concern.

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Customer reply replied 7 months ago
Where is the fuel relay at ?
Customer reply replied 7 months ago
The last week a few time well riding some times hard it would fall completely on its face like it lost all fuel pressure
Motorcycle Mechanic: Louie, Technician replied 7 months ago

The fuel pump relay would be under the seat left side.

Depending on the version, there may even be a lean angle sensor in the same location that may be causing the fuel pump relay to intermittently power the fuel pump.

...or even completely stop powering the fuel pump.

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Customer reply replied 7 months ago
Ok So replaced fuel pump but before i did it started shut it off wouldn't start again so replaced it an new fuel pump does the same thing wont cycle any fuel what could it be ?
Customer reply replied 7 months ago
relay is clicking an when held you can fell it every time
Motorcycle Mechanic: Louie, Technician replied 7 months ago

"...relay is clicking..."; confirm that indeed the fuel pump is running/priming at initial turn-on of the ignition switch.

  • IF yes, THEN potential injectors/triggers issue;
  • IF no, THEN and as earlier posted, check the lean angle sensor;
  • and all attendant wiring, connections including common tie points/joints.

More particularly, let's try check and review the basics. Proposed tests (if have not been done):

  • • presence and consistency of BAT+12V on the red wire from the starter relay to the fuel pump relay;
  • • if yes on BAT+12V, then check +12V on the red/blue wire from the fuel pump relay to the fuel pump;
  • • if none, check for RUN+12V on the fuel pump's red/black wire from the OFF/RUN kill switch;
  • • ensure fuel pump's black wire is tied to a good common ground.

Even if just for test purposes, hardwire a secondary ground line from the battery's - terminal to the frame, to the engine and to the harness' black ground wires as well as their joints/common tie points particularly that of the fuel pump's.

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