Tenere dead after valve check.

[jeepinoutwest]

2017 s10 42,000 miles, never a single issue until now. Had a valve inspection done and had plugs and air filter changed too. Ran great on the way home 65 miles. Go to start it again and it cranks fine but won’t turn over. Can’t be a coincidence. Bike was on a tender as usual. Any ideas?

 

[EricV]

Did you hear a metallic clank when you first went to start it?

Did you ride it home, park, then later fire it up to move it? Or worse, wash it, then fire it up to move it back into the garage?

It may simply be the classic hard start, but it may also be a slipped timing chain if they didn't secure something or the CCT wasn't reset correctly.

 

[jeepinoutwest]

Thanks Eric V, So I didnt hear any clank, I didnt do a short term start up and I did not wash it.

Do they even remove the timing chain or CCT when it is just an inspection and not an adjustment?

 

[tntmo]

Thanks Eric V, So I didnt hear any clank, I didnt do a short term start up and I did not wash it.

Do they even remove the timing chain or CCT when it is just an inspection and not an adjustment?

If no valves were adjusted, the CCT doesn't have to be removed.

 

[EricV]

No, they normally would not touch the timing chain if they just checked with feeler gauges and did not do a re-shim.

I'd say you are an unlikely candidate for a CCT failure with a Gen II bike and your mileage. Pull the EFI fuse and crank it until it starts to pop, then put the fuse back in and see if it will fire up. Go to WOT or 3/4 throttle if it doesn't catch immediately and keep cranking.

If that's a no go, you shouldn't be any worse for wear. Next would be checking for codes.

It's also possible it's just something silly, like the wire to the intake air temp probe came off. You unplug it when you pull the airbox out and w/o that sensor input the bike won't start.

 

[jeepinoutwest]

I did check to make sure the fuses were all good, they are. I havent tried starting without that fuse then putting it back in. What will that rule out?

 

[EricV]

I did check to make sure the fuses were all good, they are. I havent tried starting without that fuse then putting it back in. What will that rule out?

It's a common fix method for Super Tens that won't start due to being flooded.

One thing about the design, its subject to cylinder wash down where fuel runs down the sides of the cylinder walls when you're cranking it and rinses off the oil from the cylinder walls and piston rings, which reduces the compression so much it won't fire up. Cranking w/o the EFI fuse in lets it spark and turn over w/o adding more fuel. When it starts to pop, you know you've gotten the air/fuel mix and compression back into a ok range and then you can try starting it with fuel again.

If you do this and get it to pop, it really should fire up once you put the fuse back in. Don't be shy about jumping it to a car or truck battery. You won't damage anything as long as you don't crank the starter for a really long time and over heat the starter.

 

[jeepinoutwest]

Thank you Eric for that tip. I will give it a go tomorrow.

 

[EricV]

Fingers crossed that it's just a hard start. Broken bikes suck.

 

[Juan]

Could be a simple electric plug not connected when reassembling air box and tank.

 

[jeepinoutwest]

Sooo. I'm only 90% sure about this but you know when you turn the key on (I always leave the kill switch on) you hear what I believe is the fuel pump priming for about 2-3 seconds? Well, that noise is absent. Now what? Is it possible the electrical plug to the fuel pump is not connected? (but I did ride home 60 miles after the service)

 

[tallpaul]

Maybe a connector wasn't pushed fully home and it has vibrated off? First port of call is to lift the tank and check the connectors.

 

[MIMSEY]

This may not be any help to you but I had a similar issue on my Vstrom 1000. it was the clutch micro switch, put in a new one, never had the issue again.

 

[EricV]

Try turning the kill switch off, key off, then turn the key back on, kill switch on and see if you hear the fuel pump then. If the system is already to pressure, I don't think the pump will come on. It's pressurizing the fuel rail when you first hear it.

I agree with Paul, lift the tank and check the connections on the bottom of the fuel tank for the pump, and the air box intake air temp plug on the right side of the air box to see that it's fully seated. Might as well double check that the vent and drain hoses are not crimped or tangled too.

If you've not had the tank up before, you need to pull the two vent/drain lines away from the bracket first.

 

[dmulk]

If you feel it's a tank venting issue a quick test would be to open the fuel tank filler cap and try starting.
<D>

 

[jeepinoutwest]

Solved!!! Thank you all! Turns out the tech who did my valve check did not press click the electrical connection lock to the fuel pump. As soon as I clicked it in she started right up. Thanks again.

 

[tallpaul]

Nice one! Chalk that up to a win!

 

[tntmo]

Good to hear.

 

[Stef]

Gotta love a free and easy fix!

 

[ballisticexchris]

Solved!!! Thank you all! Turns out the tech who did my valve check did not press click the electrical connection lock to the fuel pump. As soon as I clicked it in she started right up. Thanks again.

Right on!! This is a good reminder to check the simple stuff.