Join Date: Apr 2011
Location: San Clemente, CA
Ear Shave and Backfire when starting with engine warm/hot
I did the ear shave procedure about 6 months ago. I re-jetted and everything per the instructions. I believe I read a post that after this procedure, you could have difficulty re-starting the bike when the engine is warm/hot, but I can't seem to find the post.
Anyway, my bike DID have this problem. After riding for a while and stopping the bike, it wouldn't struggle to start again if the engine was still warm/hot. It would try to turn over for about 3-5 seconds, then a LOUD backfire would occur. After the backfire, it would start up immediately with no problem.
I've been dealing with this problem up until now, although it is quite embarressing when at a gas station or parking lot with people around. So the other day I rode my bike home from work (about 20 minutes on the highway at 70mph). After being home for about 15 minutes I went to start my bike again. Same issue...after 3-5 seconds of trying to turn over, a very loud backfire...yet this time, it still would start. I tried again for another 3-5 seconds, and then a second backfire, but this one not as loud as the first. I gave up at that point because I was in a hurry to get to my next destination, so I just drove my truck.
Does anyone know what I can do to alleviate this backfire issue?
1993 VN750 stock