firing

so after almost 3 years i am back on the roads, before 2 days as iwas riding my no 1 cylinder stoped firing, things i have checked checked if i had spark. No spark replaced with new spark plug - No spark replaced the ht coil with the right one to see if i had spark - No spark , my bike...

I got my bike up and running finally but it ran rather rough and I felt the exhaust and the front left is dead cold. Did a compression test and it started at 90 psi and finished at 150 psi so I assume the issue is not mechanical. The plug was not wet and looked clean. I swapped over the plug...

Hi guys, hoping someone can help me with my 88 vmax not firing on all cyclinders? A week ago it was hesitating (breaking down) under load and if you held the trottle open it would clear and accelerate normally? Now it's running on roughly 2 1/2 cyclinders, the front 2 are normal, the rear Lh is...

Hi, I've got a 91 Max that I bought used. Had all sorts of carb problems that I got sorted and it ran ok. Then it started running rough again. I checked the plug wires and coils and it wasn't firing on two cylinders. So I ditched the coils and plug wires and installed some COP"s from a...

All the recent talk about exhaust sounds has got me curious about what is the most efficient exhaust between how UFO does their 4-2 and how Marks does their 4-2 I've looked in the manual and am not sure I understand the chart. Even tho I built my engine I'm still not sure. I know Damon told me...

In desperate need of some help. Okay here we go....screwed the pooch by drilling out #1 and#2 pilot screws. Now the holes are too big and the screws only allow me to turn them out 3 turns. Tore apart the carbs completely 6 times, not a speck of dirt. Float levels set and diaphragms are good...

hey guys my vmax is back firing on over run i have checked the air filter box and fitting and there fine and i have checked my exhaust headers and pipe and there all tight no leaks (kerker full system) help please

Hi Folks, Today I drove a little while in the rain. Not my usual thing to do.... But after a while I noticed that the engine during idle so once in a while run lower in rpm and sounded like he mist a cylinder. Only for one or two firerings. My first idea was maybe some moister somewhere...

I own a 92 full power Vmax. Last weekend i fitted a Scorpio bike alarm , run a series of tests after installation one being trying to start the bike with the alarm armed. When i did this and turned the ignition and kill switch off the starter stayed engaged and by the time i could unhook the...

I am having fits w my 95 vmax not wanting to run at low rpm. At first I thought it was the low rpm circuit in the carbs but it was running perfect only a few days ago and I went through the carbs just to make sure. It seams that the front right and rear left cylinder are not firing at low rpm...

when going hard then shutting down the throttle I get some decel popping and backfiring from the pipes? I have marks exhaust. morley kit stg 1 needles 2nd clip and 155 mukuni jets. do I need to richen the mains? I also am not overly impressed wiht the power of this set up. seems about the same...

The factory service manual states that the firing order is 1-3-4-2, but on the same page it shows a diagram that coflicts this. Per the diagram it looks as if it is 1-3-2-4. Which is correct?

There are some threads that seem to be close, but I am trying to narrow down the problem specifically to mine so as not to replace working items. up until this week, I had no problems with starting (needed a little throttle, but not excessive). All of a sudden (during some high 30 degree...

Hello All I was wondering what the firing sequence is for our bikes. :ummm: Read through the tech manual a bit and didnt see it. Plus I am assuming it is an "even firing engine" since it is a four cylinder:confused2::confused2: Cheers Fargo