Have a 2000 vulcan 1500 classic with 29600 miles up until the other nite it has run great i change oil when she needs and do annual services on her. With out warning she went to backfireing and not running rite, she will idle and throttle up great but put her on the road she pops and *****. Took carb apart and cleaned and did new sparkplugs, same thing.
I had same issue with my 96 I replaced the fuel pump and filter now she runs great againI had same issue with my 96 I replaced the fuel pump and filter now she runs great again
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i will tell u first the easy fix Before you do your next oil change, try adding some SeaFoam to the crankcase and ride for 50 to 100 miles. This should help remove any junk on the clutch plates. I'd also switch to another oil brand and see if it makes any difference. if it will still do the same: maybe the engagement dogs on the gears are damaged and probably the shift fork as well. The gears will stay engaged at lower torque but when the torque is great enough it causes them pull apart. And get the service manual it i help you a lot you can download it from the below link: http://goo.gl/HyxTzr Good luck
TO ALL VN1500 OWNERS....This once happen to me, I went to the garage to start the bike "Nothing ""The first thing is the lights are bright but no turning over,Next you think the solenoid is kaput but the answer was very simple and the fix takes 30 seconds.. Do not take the bike to bits looking for other problems and look at the clutch leaver and you will see some wires going into a plastic shroud going into the switch in the clutch leaver, Make sure this has not popped out if its connection as it some times may do after a few years due to constant turning on the handlebars, When this is not connected you will have a bike that will not fire up but comes alive and you will hear a clicking noise but this is from the engine carb area and every function of the bike will work but it will not turn over, Worth looking at and saves sixteen quid for a starter unit you never needed.
as long as you let out the excess oil and have it to the proper level now you should be all right.depending on how many miles are on your bike you may get a little oil that accumulates in the air filter housing because it comes from you crankcase breather tube, this tube vents out unburnt fumes out of your engine and is a normal thing that happens and may gets a little more heavy as your motor gets older.
Did you follow your service manual recommendations for oil changes. Your bike may require two different oils in different locations. Call your service center, to verify.
Use 10w40 motor oil in the gear box. Don't use any synthetic oils, oil marked "EC", or oil with "special" additives. Stick with the major brands; Pennzoil, Quaker State, Mobil or Shell. If in a hot area like Texas or New Mexico go with 20w50.
Lubrication: Wet sump, 3.7 qtA “very helpful” rating on this answer?Thanks! Compression ratio: 9.0 :1 Carburetion: Digital Fuel Injection, two 36mm throats Minimum fuel grade: 90 octane Valve arrangement: SOHC, 4 valves per cylinder Type: Liquid-cooled 50-degree V-twin Transmission: Wet clutch, 5 speeds Displacement, bore x stroke: 1470cc Final drive: Shaft, 2.619:1
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