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Bought 2013 V7 Stone and now it won't start

kael

Just got it firing!
Joined
Sep 14, 2019
Messages
3
Location
85716
Hi all,

Last weekend I bought a 2013 Moto Guzzi V7 Stone. It had been sitting a while, but the previous owner put in a new battery and it fired up OK. It would run with a low idle and sometimes die without a little rev for the first 5 min of running it after it sat for a bit. The price was right so I ended up going with it.

I rode it ~20 miles that weekend and the gas light came on. I filled it up and rode home. The next day I went to ride to work and it wouldn't start. The fuel pump would prime, but it would just crank and crank (strong cranking, so I don't think it is electrical). I checked the plugs and they were a little gunked, but each gave a spark. I tried starting it with some starter fluid and it fired up for one strong rev, and then would die immediately. This led me to think it was fuel delivery.

I drained the tank, which seems generally clean and free of rust. The gasoline is clear and uncolored. The fuel filter seems a little swollen and the gasoline inside had a fairly off yellow color, so I ordered the full metal replacement. In the meantime I pulled the injectors and soaked the tips in some injector cleaner. I put it all back together with the new filter today, hoping that I had solved it. Same issue. Pump primes, strong crank, never catches. I can still get it to give a rev with the starter fluid. I checked all of the fuses and they seem unbroken. I'm not sure if the injection system has its own relay, but the three under the tank were all the same model number so I swapped them all into the starter relay position-- they all seem to work.

I've tried starting it enough now that the new battery is dead and I am clean out of ideas. Any help or insight would be appreciated.
 
Just a bit of an update: I got a little bit paranoid with the amount of buildup on the spark plugs, so I threw in some new ones for an $8 peace of mind. I also pulled each of the injectors again and tried starting with them outside of the engine. They are both receiving fuel and spraying with some pressure. It does look like more of a 'stream' from each of the aerorators rather than a fine 'mist'. I am used to seeing a stronger, finer spray but am also used to seeing car injectors.

It appears at least that there is fuel, air, and spark getting to the engine.
 
I also pulled each of the injectors again and tried starting with them outside of the engine. They are both receiving fuel and spraying with some pressure. It does look like more of a 'stream' from each of the aerorators rather than a fine 'mist'.
They must be professionally cleaned and/or rebuilt. Try a local diesel shop or rcfuelinjection.com - else it will likely never run correctly.
 
I still have to check the compression.

The injectors probably need to be cleaned. Do you think that that would cause the bike not to start, though? Especially that it was running and then all of a sudden not even starting?
 
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