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Post by Senna1Rossi on Mar 3, 2021 23:43:51 GMT -5
I was thinkin that we have so many smart blokes here on this site (much smarter than me), that maybe I ask just in case... I was going to drop her off at a local motorcycle shop (called nearby Yamaha dealer and they said the oldest they will work on is 2011 model year... hmmm), but after reading little into it, it may possibly be the fuel pump that's the culprit? I've read that they tend to go oot (especially for 2008 models of this and WR250R), so I order an aftermarket (oem is $470) fuel pump and was gonna just gamble this will fix the issue...
Last i rode was late summer of last, and it vapor locked (or sim. because the bike wouldn't start... i had to park the bike and come back that night with a rented trailer to pick her up and bring er back home. Next morning, it started right up and no issues. the bike sat for several weeks and the next time i tried to start her, the same thing as below happened.
The below vids were taken last weekend. The first one is cold start (bike was sitting for at least a week before attempting this start for video):
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Post by Senna1Rossi on Mar 3, 2021 23:46:45 GMT -5
and this is after about 6th or 8th attempt of turning off the ignition (and re-priming) the fuel pump (you could hear the whine). it finally starts, but dies quickly after...
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Post by Senna1Rossi on Mar 3, 2021 23:47:56 GMT -5
and finally, this is when you try to give it little gas...
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Post by geoffh on Mar 5, 2021 15:45:21 GMT -5
Mr Rossi,I feel your pain,soft questions as I know zilch about your bike,is it good fresh gas? Have you tried it with easy start spray?
Geoff
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Post by Senna1Rossi on Mar 5, 2021 17:10:12 GMT -5
Mr Rossi,I feel your pain,soft questions as I know zilch about your bike,is it good fresh gas? Have you tried it with easy start spray? Geoff It was approx 1/4 tank from previous ride. I added fresh gas to fill the tank just several weeks ago hoping that may be the issue... Are you referring to starting fluid type of spray? Do I just spray into the air box (after removing air filter) for fuel injected engines? |
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Post by woodini on Mar 5, 2021 17:42:12 GMT -5
Yes sir
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Post by geoffh on Mar 6, 2021 4:21:28 GMT -5
Leave the air filter on and just spray into the inlet tube,just a shiist or two will do the trick,ditch the gas your using and get fresh regular gas(premier high octane is a no no) and yes I mean starting fluid spray,at least you will have tried the simple fix.
Geoff
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Post by 190mech on Mar 7, 2021 7:03:45 GMT -5
If you have the replacement pump in hand,put it in,,thats likely the problem..Without diagnostics and a fuel pressure guage it is just a guess..
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Post by Lucass2T on Mar 9, 2021 6:23:03 GMT -5
Check if the throttle valve is dirty first.
Does it have any electronics/sensors on it? Electronic idle control? Auto enricher? Any of that funny stuff?
It might be a faulty tps? Try unplugging it.
What happens when you manually turn up the idle speed? Does it still wanna die?
Can you take some pics of the engine/inlet/electronics sitaution?
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Post by Senna1Rossi on Mar 9, 2021 22:28:03 GMT -5
Check if the throttle valve is dirty first. Does it have any electronics/sensors on it? Electronic idle control? Auto enricher? Any of that funny stuff? It might be a faulty tps? Try unplugging it. What happens when you manually turn up the idle speed? Does it still wanna die? Can you take some pics of the engine/inlet/electronics sitaution? Every single word I just read (other than idle speed.. I don't think there is a mechanical idle adjuster for this?) was a foreign language to me... Like Martian language... Hahaha. Me know noting of engines and electronics... Me sad. Me not dumb, but me not know  |
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Post by woodini on Mar 9, 2021 22:45:25 GMT -5
It’s a lot of foreign language that doesn’t apply to every single setup
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Post by Lucass2T on Mar 10, 2021 3:59:41 GMT -5
Check if the throttle valve is dirty first. Does it have any electronics/sensors on it? Electronic idle control? Auto enricher? Any of that funny stuff? It might be a faulty tps? Try unplugging it. What happens when you manually turn up the idle speed? Does it still wanna die? Can you take some pics of the engine/inlet/electronics sitaution? Every single word I just read (other than idle speed.. I don't think there is a mechanical idle adjuster for this?) was a foreign language to me... Like Martian language... Hahaha. Me know noting of engines and electronics... Me sad. Me not dumb, but me not know  Okay, so. Did you check if the the fuel pump indeed vapor locked? When you pull off the fuel line from the injector or fuel rail, does it squirt fuel when you prime the pump? |
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Post by 90GTVert on Mar 13, 2021 6:29:01 GMT -5
Check if the throttle valve is dirty first. Does it have any electronics/sensors on it? Electronic idle control? Auto enricher? Any of that funny stuff? It might be a faulty tps? Try unplugging it. What happens when you manually turn up the idle speed? Does it still wanna die? Can you take some pics of the engine/inlet/electronics sitaution? Every single word I just read (other than idle speed.. I don't think there is a mechanical idle adjuster for this?) was a foreign language to me... Like Martian language... Hahaha. Me know noting of engines and electronics... Me sad. Me not dumb, but me not know If you can get a service manual for the bike, you can look this stuff up. It should explain diagnostic tests that can be done and there should be a troubleshooting section that will tell you how Yamaha suggests approaching a no-start on this particular machine. If you plan to work on your own bike, finding one is well worth it. It's good for small scoots and stuff, but becomes more essential and is a big time saver when you are dealing with larger and more complex machines IMO. |
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Post by Senna1Rossi on Mar 13, 2021 14:40:30 GMT -5
^^ Ah, smart suggestion, Brent. I just hope I'll have time and impetus to work on me own stuff soon... most likely will be trailer/drop off at a shop, but was hoping it would be an easy notice of typical sign(s) of the issue |
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Post by geoffh on Mar 14, 2021 10:19:21 GMT -5
I have been around transport,dealerships etc for a long time,the teccies just swap components till they find the answer,if your going to drop it into a dealer set some $$ limits and tell them to inform you if they need to "learn" how to fix your bike. Geoff,oh just a thought try it with the the fuel cap off  |
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