SV650 running on one cylinder only. Solving the problem. 

It is a KKMoon speedometer for a Ninja. I had to build the lower housing from fiber-glass and a stainless-steel bracket. The KKMoon has a tank-gauge, but no lamps for "tank empty", "tank very empty" and Oil-pressure as on my 99 SV650 has. So I placed two yellow and one red lamps on the bracket. I also changed the water-temperature control-switch to a temperature feeler (standard car-part), to make the temperature gauge work.

Not really, the mechanical movements are still the same. But it feels sluggish and rough and sounds bad.

Check the drainholes, if they are plugged they could cause dirt and water to build up

The idea of the vakuum-pulse is to close the fuel supply? Sorry, but that is wrong. The bike has a vakuum controlled fuel-valve, which closes the fuel supply, and a vakuum pump, whose function is to supply fuel to the carbs, as the tank at almost empty has a lower level than the float chambers. I do intend to change the pump back to a pulse type, as I have found one on Wish. The vakuum type has one big disadvantage over the electrical though. If you run out of fuel, it can be difficult to get the air out. Chain-saws have a priming pump, the Suzuki hasn`t.

@@elchapulin2434 I know and understand the fuel valve. The exact function of the the pulse pump escaped me, until now. I assumed it was a redundant shut off to the primary fuel valve. Thanks for explaining. 👍

@@elchapulin2434 The electrical one has a big advantage too....😁 it can break down. A non working vacuum pump will leave you with at least one cilinder running, as you proved. By the way, that was some awesome troubleshooting you did there though. Hats off ✌

You mean the oscilloscope-wires? Look at the video 1:02. Connect to the ignition-control-box in the tail of the bike. The white wire goes to the rear-cylinder coil, black/yellow to the front coil, black/white is ground.

I used a 10 dollar electric fuel pump from e-bay. However, the ticking annoyed me. This year I found a cheap aftermarket membrane-pump which I installed instead. One more thing: Look at the needle-valve seat in both carburetors. It has a fine filter that gets plugged up with polymerized "biofuel" over time. This year both my filters were plugged up. I bought a Carburetor-repair set, that contained new seats, needles and filters.

Can u send details on new pump and the carby kit u bought I love my bike and want it to run like it should it's great when both cylinders are working mines 20 years old but It's great for daily commute

@@lukeallen5042 The electrical fuel pump was a HEP 02-A universal fuel-pump from ebay. I later changed to a vakuum-pump found on Wish.com with the following text: Durable Motorcycle Vacuum Fuel Pump, Sturdy Vacuum Fuel Pump, High Reliability for Motorcycle Scooter Gy6 50Cc-250Cc It looks like the original, but I had to build a new bracket and re-route the vakuum and fuel hoses. The carb-repair set was this: www.ebay.de/itm/185299565818 Should be available on ebay in your country too.

are you able to do a quick video of how your rerouted the vac a fuell hoses?@@elchapulin2434

Chech if the drainholes are plugged

Take ur time and check if u get current to the spark plug, check if u get fuel at all times in the rear cylinder,or better yet,get ur bike to a good mechanic