tonyg-5386
Well-Known Member
Hi Guys,
I'm in a bit of trouble with my 1996 vmax. It is currently in the shop. Here is the breakdown of what occurred and what was done. I noticed one of the carbs was leaking a bit and the bike was bogging down intermittently. I have a reputable mechanic who has worked on my other bike (79 xs1100) numerous times so I brought the bike to him to checkout. I explained what was happening. He kept the bike for a few days to check it out. He then called me and told me that he found a loose fuel line that may have been the cause of the problem. He also said that the carbs were way out of synch so he synched them. He then said he would test ride the bike and get back to me. He then called me back to let me know that he rode the bike again and in the beginning of the ride the bike seemed ok but then it started doing what I originally described. He then decided to rebuild the carbs. It still did the same thing. He then decided it was ignition related and decided to replace my cdi with a new dyna ignition. He told me that after he changed the ignition the bike was test ridden and said to be fine. I go to pickup the bike and I pay him. I get on the bike and proceed to the nearest highway. I get the bike up to about 4500 -5000 rpms when shifting gears and the whole bike starts to shudder as if there is some sort of miss or fuel starvation. The bike seems to run fine until you really start getting on it. I rode the tank to almost empty, refueled and decided to take it for a decent run the next day to see if it cleared up. Nope. The bike is now back in the shop and the mechanic is kind of stumped by the problem. Any ideas at this point would be greatly appreciated. I already posted this on vmoa.net. I'm just looking for more ideas. The responses I got are below.
If your bike is running rich it will generaly show-up around the 4K~5K RPM range, this seems to be a common issue. If the carbs are stock setup have him check the float levels they have to be right first before you try to setup anything else.
+1 on the floats! First thing I thought was that there is a stuck float and the bike is pulling that bowl dry and the bike is starving for fuel at high RPM.
I will have him re-check the floats but I'm fairly certain he went over the carbs thoroughly when he rebuilt them and that's why he went after the ignition as the next step.
He checked the floats...they are set correctly. Any other thought?
I'm in a bit of trouble with my 1996 vmax. It is currently in the shop. Here is the breakdown of what occurred and what was done. I noticed one of the carbs was leaking a bit and the bike was bogging down intermittently. I have a reputable mechanic who has worked on my other bike (79 xs1100) numerous times so I brought the bike to him to checkout. I explained what was happening. He kept the bike for a few days to check it out. He then called me and told me that he found a loose fuel line that may have been the cause of the problem. He also said that the carbs were way out of synch so he synched them. He then said he would test ride the bike and get back to me. He then called me back to let me know that he rode the bike again and in the beginning of the ride the bike seemed ok but then it started doing what I originally described. He then decided to rebuild the carbs. It still did the same thing. He then decided it was ignition related and decided to replace my cdi with a new dyna ignition. He told me that after he changed the ignition the bike was test ridden and said to be fine. I go to pickup the bike and I pay him. I get on the bike and proceed to the nearest highway. I get the bike up to about 4500 -5000 rpms when shifting gears and the whole bike starts to shudder as if there is some sort of miss or fuel starvation. The bike seems to run fine until you really start getting on it. I rode the tank to almost empty, refueled and decided to take it for a decent run the next day to see if it cleared up. Nope. The bike is now back in the shop and the mechanic is kind of stumped by the problem. Any ideas at this point would be greatly appreciated. I already posted this on vmoa.net. I'm just looking for more ideas. The responses I got are below.
If your bike is running rich it will generaly show-up around the 4K~5K RPM range, this seems to be a common issue. If the carbs are stock setup have him check the float levels they have to be right first before you try to setup anything else.
+1 on the floats! First thing I thought was that there is a stuck float and the bike is pulling that bowl dry and the bike is starving for fuel at high RPM.
I will have him re-check the floats but I'm fairly certain he went over the carbs thoroughly when he rebuilt them and that's why he went after the ignition as the next step.
He checked the floats...they are set correctly. Any other thought?
