2007 Yamaha YZFR1 Engine cooling Problems

“My 2007 Yamaha r1 1. The bike cuts off almost every time I come to a stop. It does not matter whether the bike is in neutral or in gear with the clutch pulled in. It died approximately. 15-20 times on my ride. 2. If I blip/rev the bike in neutral or while in gear with the clutch pulled in, the bike shuts of as well. 3. I was merging on the freeway in second gear and when I went to speed up, the bike hesitated for about 3-4 seconds and then very slowly picked up. I was almost hit by the car behind me. …”

“2007 Yamaha yzf-r1. Manufacturer defect that causes the intake valve in the number 4 cylinder to rub on the guide and causes the valve to break off into the cylinder. I was lucky enough to catch it early and took it to my repair guy. He disassembled the head and found the bad valve. Sent it out to be machined and the machinist was unable to get a valve guide to press in due to the bad machining from the factory. He then had to machine it out and replace with a different guide. I called Yamaha when this was happening and they told me that no one else had reported a problem like this. …”

“I purchased my motorcycle brand new and noticed one day while trying to accelerate in second gear after slowing that the bike did not respond. The bike acted as if in slow motion and then all of a sudden the power returned to it. It will continue to do it to this day and I do not know why. I have since learned it is a widespread problem. I believe it is a very real safety issue due to the fact that it has happened once when I was trying to get out of the way of a vehicle that was moving into my lane. Luckily they noticed me at the last minute but I can't expect that to always be the case.”

“- the contact owns a 2007 Yamaha motorcycle YZF-R1. When the motorcycle is in 2nd gear and at 5500 rpms, the motorcycle hesitates for approximately 3-4 seconds when he tried to accelerate. The contact had not taken the motorycle to be diagnosed. The failure mileage was 1 mile, and the current mileage was 743 miles.”

“This motorcycle consistently refuses to accelerate when in second gear at approximately 550rpm or 49 MPH. There is a substantial delay in response and a very slow increase in speed until nearly 70 MPH is reached when it starts to accelerate as normal. There are no fault codes or any other abnormal indications, and this can be recreated at any time. This poses a significant hazard for collision avoidance as well as merging with existing traffic.”