I have a 2007 Vulcan 900 custom with only 8000 miles. I have been trying to troubleshoot it for a while now. I know it is firing, getting fuel and getting air but still won’t crank just keeps turning over. The local shop looked at it and told me the same stuff I already know. Does anyone happened to have experienced this before?
MarkL2006
Sorry Mark, but the first thing you need to do is learn how to describe your issues.
CRANK / CRANKING OVER = this means the starter motor is turning the engine over - rar...rar...rar...rar...
FIRE / FIRING = this means you are actually getting combustion, and you hear "explosions" coming from the exhaust...like the engine is actually running, or at least trying to run/fire.
GETTING FUEL PRESSURE = you only know this by testing the PRESSURE output from the fuel pump.
FUEL VOLUME = you have actually tested the fuel pump VOLUME flow with a graduated cylinder or similar container.
GETTING SPARK = quick way to check this is by pulling a plug (or both), grounding the threads, and cranking over the engine using the starter - look for the SPARK between the plug centre & side electrodes. Careful, you may still be getting FUEL being injected into the cylinder, so don't do this too long - ie: you may/will be flooding the cylinder with raw fuel - you need to let it evaporate - leave the plugs out for a bit.
GETTING AIR = well, assuming your air filter is clean/new and your intake valves are adjusted correctly, and you have no other restrictions in the intake tract, you are very likely getting AIR into the cylinders...kinda obvious.
So, what is actually happening?
Is the starter CRANKING the engine? Is it FIRING? Can you smell FUEL? Do you have SPARK? How do you know you are getting FUEL into the cylinders?
Sorry dude, I read too many of these "diagnostic posts" and am feeling a little tired and cranky (no pun intended).
CRANK / CRANKING OVER = this means the starter motor is turning the engine over - rar...rar...rar...rar...
FIRE / FIRING = this means you are actually getting combustion, and you hear "explosions" coming from the exhaust...like the engine is actually running, or at least trying to run/fire.
GETTING FUEL PRESSURE = you only know this by testing the PRESSURE output from the fuel pump.
FUEL VOLUME = you have actually tested the fuel pump VOLUME flow with a graduated cylinder or similar container.
GETTING SPARK = quick way to check this is by pulling a plug (or both), grounding the threads, and cranking over the engine using the starter - look for the SPARK between the plug centre & side electrodes. Careful, you may still be getting FUEL being injected into the cylinder, so don't do this too long - ie: you may/will be flooding the cylinder with raw fuel - you need to let it evaporate - leave the plugs out for a bit.
GETTING AIR = well, assuming your air filter is clean/new and your intake valves are adjusted correctly, and you have no other restrictions in the intake tract, you are very likely getting AIR into the cylinders...kinda obvious.
So, what is actually happening?
Is the starter CRANKING the engine? Is it FIRING? Can you smell FUEL? Do you have SPARK? How do you know you are getting FUEL into the cylinders?
Sorry dude, I read too many of these "diagnostic posts" and am feeling a little tired and cranky (no pun intended).
To run you need fuel, spark and compression. Is the fuel fresh? When you checked them, are the plugs wet with fuel? Did you check for spark with a spark tester? The spark tester will only fire if you have a strong enough spark. While the plugs are out to check, dry, clean, do a compression test. You can't be sure anything is good unless you test it.
I had recent similar initial symptoms.
While I am not suggesting a cause for yours.
Here was mine: https://www.vulcanforums.com/forums/49-vulcan-900/297516-engine-turns-over-but-does-not-start.html
Good luck sorting it out.
While I am not suggesting a cause for yours.
Here was mine: https://www.vulcanforums.com/forums/49-vulcan-900/297516-engine-turns-over-but-does-not-start.html
Good luck sorting it out.
Mark, if a bunch of folks in cyber-space are going to have any chance of helping you, you're going to have to really "dig deep" and tell us what is happening.
First, how did you get the bike to the "local bike shop" so they could "... looked at it and told me the same stuff I already know".???
Do you have any mechanical abilities?
Tell us about the bike. Year, miles, stock or not - pipes, fuel controller, intake? How long have you had it? How many miles do you put on it in a usual week/month?
What lead up to this situation? For example, did you drop the bike? Did you wash it? Did you try and do anything else to the bike? Did you just fuel-up? Did you try and add any electrical parts to the bike? How long does it sit between regular rides? Where do you store it? Did this "no start" situation just happen one day out of the blue? If it has happened before, how did you get the bike finally going/running? Was the bike running when you took it to the "shop" for them to diagnose it, or did you trailer it there?
OK, so, once you give us the back-story, there will be more questions. We are trying to be patient.
First, how did you get the bike to the "local bike shop" so they could "... looked at it and told me the same stuff I already know".???
Do you have any mechanical abilities?
Tell us about the bike. Year, miles, stock or not - pipes, fuel controller, intake? How long have you had it? How many miles do you put on it in a usual week/month?
What lead up to this situation? For example, did you drop the bike? Did you wash it? Did you try and do anything else to the bike? Did you just fuel-up? Did you try and add any electrical parts to the bike? How long does it sit between regular rides? Where do you store it? Did this "no start" situation just happen one day out of the blue? If it has happened before, how did you get the bike finally going/running? Was the bike running when you took it to the "shop" for them to diagnose it, or did you trailer it there?
OK, so, once you give us the back-story, there will be more questions. We are trying to be patient.
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