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Is this a normal startup time?


stillshot2

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stillshot2

I feel like my bike has been taking more cranks to get started lately. Battery seems to be testing ok but to make sure I even hooked it up to a car battery and was the same thing. It's only on a cold start and right after it starts if I shut it off and restart it will fire right up. New spark plugs and a throttle body sync made no difference, has about 10,600 miles on it. Here's a video link: 

 

Edited by stillshot2
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Triple Jim

Mine often starts with less cranking, but sometimes starts just like in your video.  If it were mine, I would not be concerned.

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ElGonzales

Mine acts like Jims and I think it's okay

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stillshot2

Hmm ok. The reason I'm a little concerned is that it used to start up quicker but now it's like 9 or 10 cranks every time like this. Should I be concerned about the fuel regulator or fuel pump slowly failing?

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Triple Jim

I'm not sure what you mean by 9 or 10 cranks.  Your video shows 2-3 cycles, which is maybe 4-6 rotations of the engine.  The initial fuel pump cycle sounded very normal too.

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clinical

Mine starts slower in warm weather or when engine is hot.  I think it has to do with the charcoal canister system (cali bike) but not positive.

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ElGonzales

It the same with my bike. When it is hot outside and I ride it pretty fast (within my limited abilities) after a short break the engine sometimes needs longer to start or a even a little bit of opening the throttle. But I don't have the charcoal system.
I told this to a mechanic for japanese bikes nearby when I brought him my wheels for new tires. He said, all the Yamahas have this, it's like the ECU has a problem to find the correct parameters for this situation in the first seconds. 
Maybe it's just the air intake temperature sensor placed at the fuel tank above the hot engine, for whatever reason? Hot air rises up while the bike stands still,  accumulates under the covers and the temperature value signaled to the ECU is way to high. Just a guess. 

Edited by ElGonzales
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