2007 Yamaha YZFR1

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 LATER LEARNED THAT THEY DO KNOW ABOUT IT AND IT IS A RECURRING PROBLEM FOUND IN MANY OF THE 2007 R1'S PRIMARILY THOSE STAMPED 02/07 ON THE VIN. I CALLED YAMAHA BACK AND THEY SAID THERE WAS NOTHING THAT THEY WOULD DO SINCE THE WORK WAS ALREADY DONE AND IT WAS NOT UNDER WARRANTY. MORE INFORMATION CAN BE FOUND ON THE R1 FORUM UNDER THE MECHANICAL HELP THREAD. TITLED RECALL ON 07/08 SHOULD THEY? CAN WE PUSH THIS? I FIRST NOTICED THAT THE BIKE WAS LOSING A LITTLE POWER AND THEN IT BEGAN TO GET WORSE. *TR

TL* THE CONTACT OWNS A 2007 YAMAHA YZFR1 MOTORCYCLE. THE CONTACT STATED WHEN DRIVING THERE WAS AN ABNORMAL TICKING COMING FROM THE VEHICLE. THE MANUFACTURER ADVISED THAT THE NOISE WAS NORMAL. THE CONTACT STATED THE NOISE PROGRESSED AND THE VEHICLE WOULD SPORADICALLY BACKFIRE WITH LIMITED POWER AND PRESSURE. THE CONTACT BELIEVED THE FAILURE TO BE CAUSED BY THE VALVE STEM WHICH WAS PLACED INCORRECTLY AND COULD POTENTIALLY BREAK. THE VEHICLE WAS NOT REPAIRED AND THE CONTACT WAS NO LONGER DRIVING THE VEHICLE. THE FAILURE AND CURRENT MILEAGE WAS APPROXIMATELY 7,000.

HAS EXTREME THROTTLE LAG IN SECOND GEAR AT AROUND 5500 RPM. PROBLEM ISN'T PRESENT EVERYTIME, BUT CAN BE DUPLICATED BY PUTTING THE BIKE INTO SECOND GEAR AND STAYING AT 5500 RPM FOR 1 TO 2 SECONDS AND THEN APPLYING GENEROUS THROTTLE. A LAG USUALLY AROUND 3 SECONDS AFTER POWER APPLICATION CAN BE FELT. IT HAS CAUSED ME TO ALMOST BE INVOLVED IN 2 ACCIDENTS DUE TO THIS ISSUE. AT THAT RPM AND GEAR SETTING THE BIKE IS UNSAFE DUE TO THE LACK OF THROTTLE RESPONSE AND CAN CAUSE AN EXTREMELY UNSAFE SITUATION ON THE PUBLIC ROADS FOR NOT ONLY THE MOTORCYCLIST BUT FOR OTHER MOTORISTS AS WELL. *TR

I RECENTLY PURCHASED THE 2007 R-1 MOTORCYCLE AND HAVE BEEN HAVING CONTINUOUS PROBLEMS WITH THE THROTTLE LAG. 2ND GEAR AT 5500 MPH THE MOTORCYCLE HAD NO POWER. I FOUND THIS TO BE VERY DANGEROUS WHEN PASSING VEHICLES AND ACCELERATING THROUGH TURNS. I FELT THAT YAMAHA WAS NOT DOING THEIR PART TO FIX THE PROBLEM. $12,000 LATER AND UNHAPPY. PLEASE HELP. *AK

I RECENTLY PURCHASE A 2007 YAMAHA YZF R-1. UNDERSTANDINGS IT IS THE FIRST YEAR YAHMAHA USES THIS TECHNOLOGY ON THE R1S WAS A CONCERN. BUT I BOUGHT IT ANYWAY. MY FEARS CAME TRUE WHEN MERGING ONTO FREEWAY. THE BIKE HAS A DANGEROUS THROTTLE LAG IN 2ND GEAR AT 5500RPMS (45MPH). THIS IS AN UNSAFE SITUATION ON ANY VEHICLE BUT ESP A 2 WHEEL MOTORCYCLE. APPARENTLY THERE IS NO FIX FOR THE PROBLEM AND YAMAHA IS NOT PLANNING A RECALL DESPITE KNOWING OF THE HAZARDOUS POSITION IT HAS PLACED ITS CUSTOMERS IN. *TR

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. I REALIZED THAT IF I'M AT 5500 RPM'S IN SECOND GEAR FOR A FEW SECONDS AND THEN OPEN THE THROTTLE, IT CAUSES THIS LAG EVERY SINGLE TIME. THIS IS DEFINITELY NOT SAFE! I WAS ALMOST REAR ENDED BY A CAR. 4. THE BIKE ALSO REACHED 250 DEGREES SEVERAL TIMES UNDER CRUISING CONDITIONS. I CAN'T EVEN TRUST THIS BIKE TO STAY RUNNING EITHER 'CAUSE IT SEEMS IT DIES EVERY TIME I COME TO A STOP. 5. THE BIKE ALSO SOMETIMES TAKES QUITE A FEW TRIES TO START IT. I HAVE TO HOLD DOWN THE STARTER FOR ABOUT 3-5 SECONDS SOMETIMES. *TR

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. *TR

2007 YAMAHA YZF-R1 SUPER SPORT MOTORCYCLE. THERE IS A CONSTANT FAILURE MODE IN THE ENGINE MAPPING THAT CAUSES SLOW ENGINE ACCELERATION IN THE FOLLOWING CONDITIONS: 2ND GEAR, 5500 RPMS. THIS CONDITION CAN BECOME A SIGNIFICANT SAFETY ISSUE WHEN MANEUVERING IN HEAVY TRAFFIC, OR EXPECTING ENGINE POWER TO HELP STAND THE MOTORCYCLE UP AFTER A TIGHT TURN. AFTER CONTACTING YAMAHA, I WAS TOLD THAT THE ENGINEERS HAS EVALUATED THE CONDITION AS A CHARACTERISTIC OF THE MOTORCYCLE AND NOT A SAFETY ISSUE. YAMAHA HAS NO PLANS TO CORRECT THIS ISSUE.

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. *JB