Posts
609
Joined
7/8/2015
Location
IL
US
Edited Date/Time
1/9/2019 5:48pm
Just picked up this beauty last saturday. It a 18 250f.
Took it to the indoor track it was hard to start needed a little throttle and about 10-12 kicks to fire up. Once it warmed up it started 3-4 kicks all day. Got it home it was hard to start again. Fast forward to today took 10-15 kicks fired up. Let it warm up idling once warm went to give it a slow braa
p on the stand. The minute the play came out of the throttle it died and will not start again. I'm gonna call the shop in the morning an talk with them. But does anyone have a idea. Its only got 45 minutes on it
Took it to the indoor track it was hard to start needed a little throttle and about 10-12 kicks to fire up. Once it warmed up it started 3-4 kicks all day. Got it home it was hard to start again. Fast forward to today took 10-15 kicks fired up. Let it warm up idling once warm went to give it a slow braa
p on the stand. The minute the play came out of the throttle it died and will not start again. I'm gonna call the shop in the morning an talk with them. But does anyone have a idea. Its only got 45 minutes on it
The Shop
The fuel injection may need to be cleaned. It does not take much to clog. Had this happen to a new bike i had.
Buy the Twin Air filter that goes inside the gas tank. It will catch any debris when you are pouring gas into the bike.
Kidding of course!
I’d take it back and if it is the valves demand an entire brand new head.
Could be something simpler as well the symptoms you described remind me of my carbed 08 450 that came brand new off the show room floor with water in the gas. Would hardly start and when it did just idle like crap then die if i gave it any throttle.
I had a 16 and 17 YZ250F and had the same problems. Sounds like you got a lemon.
The bike will start like a bastard and once it warms up it will start fine. As soon as it's cold you're going to have the same problem. This won't last long until the bike won't start at all unless you bump start it. You can do this for awhile until you put the crank through the motor. Eventually I got good at knowing when the valves were out of spec cause it felt like the bike had no pull (felt like the clutch was worn). You'll come across that if this is the case in this bike already.
Some other frightening stories about the Yamaha's...
The beginning of 2017 two (C) class brothers purchased brand new YZ250F's (as did I). One of them got a left over 16 and the other got a brand new 17 like me. The guy that bought the 17 valves went at less than 10 hours. He took it to the shop and had to replace both intake valves...this lasted only for a few hours until they went again. He once again got them fixed and sold the bike (with 0 hours on the new valves) and the new individual that bought the bike toasted them again couple hours later. The guy that bought the 16 valves went at 5 hours...he saw what his brother was going through and sold the bike as is. The guy that bought it was a fast B rider and kept running it by jump-starting it. He put the crank right through the motor only a few weeks after.
Yamaha won't do F-All for you man. I learned my lesson the hard way on my third Yamaha purchased last spring with the new YZ450F. I had to put a new motor in it at 6 hours, the starter clutch went in the new motor at 5 hours, and about 15 hours after that I had to get a whole new cylinder, another starter clutch, and the valves were completely our of spec. You can say that I have the bike prepped and ready for a trade in the coming months.
It's proven Yamaha is reliable and they keep winning bike of the year, but somewhere in the factory they are letting a lot of lemons out.
Some people are going to be on my ass and tell me my maintenance is shit, but that's not the case at all. So heres a photo of what my 18 looks like right now. I might of got 30 hours on it this summer and spent more money repairs this summer than what the trade in values worth.
Pit Row
You’re in a shit ass spot that myself and two others I witnessed were. Luckily for me my bike was bought and paid for. They other guys both took out five year loans on a dirt bike that was worth less than half the value when they parted ways.
My dealership did the same thing. They ate a lot of the costs of labour and parts but at the end of the day I still had a very hefty bill on a brand new bike that only had 6 hours on it for a new motor.
Definitely will be polite and professional with them. It thinks that's mandatory. No offense taken on my mechanical skills. As far as mechanical skills. Im Yamaha certified. I've had my hands on motors that guys lining up tonight rode. Also had my hands in one of these yzfs for a may or maybe not retired rider.
The whole reason I posted it up here was to show it off and see if anyone had something odd like this happen. I did test all connections tps,a new plug. I didn't do a compression test cause i honestly didn't want to know that yet lol. As far As my thoughts It does seem like a fuel delivery or intake valves are tight. I took it to the dealer since its brand new and has a 30 day warranty. An i dont think it's my responsibility to fix this especially cause who knows what's gonna happen later on down the road. They are being super nice and helpful. When they find out what's wrong they're going to give me a call so I can if needed put my two cents in. Might walk out with a 19 instead.
I was trying to see if any one had something odd they found that might be it since these guys a 3 hours away.
As far as odd things on bike I've seen bike come untouched with seized main bearings linkages, no fork or shock oil.
Me personally I've had a few. A cr125 no one could get to run right. A pair of Husky/BMW 449's that didn't make it 2 hours befor the both locked up from different causes.
So i guess my 03 kx125 i picked up and was gonna build will have to hold me over.
Just out of curiosity what brand of bike and model do you think you will get next?
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