SevenBravo
Member
- Mar 20, 2022
- 3
- 1
Hello Folks,
I finally broke down and bought another dirt bike after a 30 year hiatus...and they, of course, have changed. I have a problem I can not identify and I'm hoping someone here might know what's going on.
I have a 2017, throttle body injected, CRF450RX that I bought late last summer, used. When I bought the bike, it started right up, every time. That said, over time, she started getting harder and harder to start (towards the end of season) but I could always get her started with the kick start. Then came winter and about 3 months of sitting. After the bike had sat, she would NOT start...no matter what I did. She's getting spark and fuel, so I thought maybe I had inadvertently put some bad gas in her last fall. I drained and refilled the tank and she started RIGHT UP and ran FINE that day, after some good gas had gone through the system. I did not ride it much, as I was working on the bike that day, but she fired right up before I put her away again. Only a few days later, I went out to do some more work on the bike and found she would NOT start again.
I have since changed the spark plug, along with the battery and still cannot get her started, with the switch or the kick start. Any ideas??? When I bought the bike, she would fire right up.?.?.? Thank you in advance for any help or feedback I can get on this!
UPDATE: I've torn the bike down several times looking for any potential problem. I have spark and I have fuel...and I can't see how I wouldn't have air...where's the fire??? Yesterday, after draining the fuel AGAIN, I decided to check the filter, so I pulled the pump. The main O-ring was broken into 2 pieces but it was NOT leaking fuel. Could this have ANYTHING to do with my problem??? I have NO idea with these computerized bikes. I went through all of my connectors yet again and ended up breaking the clip on to the ECU. It was brittle. I guess I'll have to use a little JB Weld to put her back together with b/c I do NOT want to replace the whole wiring harness. My fuel filter looks fine, though I have NO idea how one is supposed to know when it's dirty???
I even tried a short shot of brake cleaner in the air intake to get her to fire...no luck.?.?.?
I finally broke down and bought another dirt bike after a 30 year hiatus...and they, of course, have changed. I have a problem I can not identify and I'm hoping someone here might know what's going on.
I have a 2017, throttle body injected, CRF450RX that I bought late last summer, used. When I bought the bike, it started right up, every time. That said, over time, she started getting harder and harder to start (towards the end of season) but I could always get her started with the kick start. Then came winter and about 3 months of sitting. After the bike had sat, she would NOT start...no matter what I did. She's getting spark and fuel, so I thought maybe I had inadvertently put some bad gas in her last fall. I drained and refilled the tank and she started RIGHT UP and ran FINE that day, after some good gas had gone through the system. I did not ride it much, as I was working on the bike that day, but she fired right up before I put her away again. Only a few days later, I went out to do some more work on the bike and found she would NOT start again.
I have since changed the spark plug, along with the battery and still cannot get her started, with the switch or the kick start. Any ideas??? When I bought the bike, she would fire right up.?.?.? Thank you in advance for any help or feedback I can get on this!
UPDATE: I've torn the bike down several times looking for any potential problem. I have spark and I have fuel...and I can't see how I wouldn't have air...where's the fire??? Yesterday, after draining the fuel AGAIN, I decided to check the filter, so I pulled the pump. The main O-ring was broken into 2 pieces but it was NOT leaking fuel. Could this have ANYTHING to do with my problem??? I have NO idea with these computerized bikes. I went through all of my connectors yet again and ended up breaking the clip on to the ECU. It was brittle. I guess I'll have to use a little JB Weld to put her back together with b/c I do NOT want to replace the whole wiring harness. My fuel filter looks fine, though I have NO idea how one is supposed to know when it's dirty???
I even tried a short shot of brake cleaner in the air intake to get her to fire...no luck.?.?.?
