2007 Tourist - dies at idle

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2007 Tourist - dies at idle

Post by TriumphRider87 » Sun Apr 07, 2019 5:13 pm

Hey everyone, looking for some advice on troubleshooting my rough-running problems.

I still love my 2007 Tourist, and have had quite a number of happy kms of riding, both solo and with my son as passenger. He loves it and wants to ride all the time. We rode almost every other weekend this winter. Ran well.

Recently, it's not been running well, and getting worse. Now will die at idle, at stop signs and stop lights. Won't start with the electric starter. Can't kick start it either. Can bump start it every time. I'm getting my exercise pushing it along then hopping on.

It will run if I keep the revs up, but obviously that's just masking the problem, and isn't a safe way to ride.

So I tried some things today: I just finished dropping the float bowls and pulling the jets. They're all clean. No build-up, nothing looks out of the ordinary. Reinstalled and all good, I think.

Just replaced the spark plugs. Old ones were fairly black - see pics. Runs a little better, but not really. Still died on me after taking a 1-mile test ride just now. Had to turn around, point downhill and roll start it.

Generally requires choke to start, unless it's been running. If it were running rich, which is what the black spark plugs might indicate, then you'd think the choke wouldn't be necessary to start it.

So I'm confused. Is it too rich? Too lean?

Further symptom, has happened 2 or 3 times, and just happened on that test ride about 30 minutes ago: stopped at stop sign, holding the revs a little higher than idle, I went to turn right and gave it some throttle. The engine did not rev up. Ran rough and slow for about 15-20 seconds, then roared to life. Backed off the throttle a bit, out with the clutch, and all was good.

But that symptom of giving it gas and it not revving up, feeling like it was working its way through something, before finally responding normally.


Ideas? What should I look at next? Perhaps a clogged fuel line?

Please point me in the right direction. Thanks in advance.
Last edited by TriumphRider87 on Sun Apr 07, 2019 5:44 pm, edited 1 time in total.
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Re: 2007 Tourist - dies at idle

Post by TriumphRider87 » Sun Apr 07, 2019 5:26 pm

picture of spark plugs, old and new:

Note I did gap the two that I put in, to 0.035" The one on the right in this photo is one of the extra two (I bought 4), and is still factory gap.

But - is the one on the left overly black? Would this be considered fouled, or merely well used?

Though I'm still getting the same issues with the new ones in, so that's not it.

Image
Last edited by TriumphRider87 on Sun Apr 07, 2019 5:44 pm, edited 1 time in total.
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Re: 2007 Tourist - dies at idle

Post by TriumphRider87 » Sun Apr 07, 2019 5:32 pm

And like I mentioned in first post - jets are clean. Can see right through, no build-up. - And that is thanks to ReCycled (David B)
- who very selflessly helped me with clean jets.

They're still clean as a whistle, as far as I can tell.
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Re: 2007 Tourist - dies at idle

Post by jeffsaline » Sun Apr 07, 2019 11:29 pm

Just long distance guessing with this post but if I was working this issue with what I currently understand of the situation I would check two things.

First is the condition of the battery. I would make sure it is fully charged and check voltage readings while resting (key off), key on, and then also verify the voltage while cranking the engine. If I had any doubt I would fully charge the battery and take it to a shop or autoparts store to get it load tested. Voltage I would like to see is 12.5 or better at rest, 12.4 or better with the key on and 10.0 or better while cranking the engine. I would also want to verify the charging voltage with the engine running at about 2,500 rpm for maybe 15 seconds. I would hope to see at least 13.5 volts.

Second thing I'd look at is the vacuum portion of the petcock. If the vacuum diaphragm is leaking it can add fuel to the air fuel mixture in the carb the vacuum line is connected to. At higher rpms there is usually enough air passing to mask a problem and allow the air/fuel mixture to combust. At idle the extra fuel can cause a rich mixture so rich it can prevent combustion in the affected cylinder. Additionally a leaking diaphragm could prevent the vacuum operated portion of the petcock from fully opening and causing restricted fuel flow. You can check the inside of the vacuum line for any dampness (fuel) by riding and doing a closed throttle deceleration. Stop in a safe location and immediately stop the engine and remove the vacuum line from the petcock. Look inside the vacuum line. It should be dry. If there is any dampness it suggests the vacuum diaphragm in the petcock is leaking fuel.

Good luck with your continued troubleshooting.

Jeff
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Re: 2007 Tourist - dies at idle

Post by VWK75S » Mon Apr 08, 2019 5:12 am

Dirty air filter,
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Re: 2007 Tourist - dies at idle

Post by rivers » Mon Apr 08, 2019 6:53 am

VWK75S wrote:
Mon Apr 08, 2019 5:12 am
Dirty air filter,
John
+1
Dirty or over oiled air filter is easy enough to check.
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Re: 2007 Tourist - dies at idle

Post by Mr Wazzock » Mon Apr 08, 2019 7:33 am

I think it's misfiring, so won't keep going at low revs also accounts for the black plugs because of unburnt fuel, is like being too rich. I'm assuming the 2007's have electronic ignition? (General question to the collective ) Known to fail because gets too hot where it's mounted on front of engine. Only going by what I've read here. As above diagnosing from a distance.
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Re: 2007 Tourist - dies at idle

Post by S 854 » Mon Apr 08, 2019 8:58 am

rivers wrote:
Mon Apr 08, 2019 6:53 am
VWK75S wrote:
Mon Apr 08, 2019 5:12 am
Dirty air filter,
John
+1
Dirty or over oiled air filter is easy enough to check.
Unscrew the two bolts holding the air filter lid just a bit... lift the lid about a quarter inch (lets the engine suck unfiltered air) and see if’n your problem goes away...
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Re: 2007 Tourist - dies at idle

Post by Claus » Mon Apr 08, 2019 10:47 am

jeffsaline wrote:
Sun Apr 07, 2019 11:29 pm

First is the condition of the battery.
That was my first thought!
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Re: 2007 Tourist - dies at idle

Post by TriumphRider87 » Tue Apr 09, 2019 12:13 am

Thanks everyone!

Battery is only a year old, and is kept on a tender all the time. So while it could be the battery, I think that’s less likely. But I will indeed test the voltage and see.

Will look into the petcock test, and the air filter test - thank you for those suggestions.

My wife has suggested simply bad gas. I’ll test that as well. Drain this tank, put in fresh / new.

But I’m thinking it’s probably the petcock. Hm.

Will let you all know.

Thanks again!
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Re: 2007 Tourist - dies at idle

Post by Mothra35 » Tue Apr 09, 2019 10:30 am

If it is just at idle and you can stop and hold it open a bit and it will stay running,,,maybe someone messed with your idle screw..idle it up a bit and see what the RPM's are....Blue Ox productions has a video on setting the Idle by RPM's with a test light.

Just another suggestion
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Re: 2007 Tourist - dies at idle

Post by TriumphRider87 » Sat Apr 13, 2019 8:31 pm

jeffsaline wrote:
Sun Apr 07, 2019 11:29 pm
Just long distance guessing with this post but if I was working this issue with what I currently understand of the situation I would check two things.

First is the condition of the battery. I would make sure it is fully charged and check voltage readings while resting (key off), key on, and then also verify the voltage while cranking the engine. If I had any doubt I would fully charge the battery and take it to a shop or autoparts store to get it load tested. Voltage I would like to see is 12.5 or better at rest, 12.4 or better with the key on and 10.0 or better while cranking the engine. I would also want to verify the charging voltage with the engine running at about 2,500 rpm for maybe 15 seconds. I would hope to see at least 13.5 volts.

....

Good luck with your continued troubleshooting.

Jeff

Hi Jeff,

Thank you for your suggestions. Tried a few things today.

Battery voltage before ride: 12.9V. Static, sitting. (photo below, sorry about the 90degree)
Battery voltage after ride: 13.0V. Again, static, sitting. (photo below, again 90 degrees off)
Battery voltage with key on: 12.4V. (photo below, same 90 degree issue)

Battery voltage when cranking: 12.4V. (no photo, but it didn't droop, which was interesting)

So I don't think it's the battery. Let me know if you think otherwise.



Battery Before Ride:
Image

Battery After Ride:
Image

Battery with Key On:
Image
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Re: 2007 Tourist - dies at idle

Post by TriumphRider87 » Sat Apr 13, 2019 8:52 pm

jeffsaline wrote:
Sun Apr 07, 2019 11:29 pm
Just long distance guessing with this post but if I was working this issue with what I currently understand of the situation I would check two things.

...

Second thing I'd look at is the vacuum portion of the petcock. If the vacuum diaphragm is leaking it can add fuel to the air fuel mixture in the carb the vacuum line is connected to. At higher rpms there is usually enough air passing to mask a problem and allow the air/fuel mixture to combust. At idle the extra fuel can cause a rich mixture so rich it can prevent combustion in the affected cylinder. Additionally a leaking diaphragm could prevent the vacuum operated portion of the petcock from fully opening and causing restricted fuel flow. You can check the inside of the vacuum line for any dampness (fuel) by riding and doing a closed throttle deceleration. Stop in a safe location and immediately stop the engine and remove the vacuum line from the petcock. Look inside the vacuum line. It should be dry. If there is any dampness it suggests the vacuum diaphragm in the petcock is leaking fuel.

Good luck with your continued troubleshooting.

Jeff
Thanks for this suggestion. So here's what the vacuum line from the petcock looked like, immediately after pulling over and disconnecting it, first the bottom, then the top. See pics below.

So there was dampness at the bottom. Not at the top. But there's a funny whitish dry residue at the top... maybe old fuel?
What do you think? Evidence of the vacuum diaphragm leaking?
I've gone ahead and ordered a knockoff Yamaha fuel petcock, will replace and see how that goes.


Fuel Petcock Vacuum line bottom (note this is displaying 90 degrees off):
Image


Fuel Petcock Vacuum line top (note this is displaying 90 degrees off):
Image
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Re: 2007 Tourist - dies at idle

Post by TriumphRider87 » Sat Apr 13, 2019 9:02 pm

VWK75S wrote:
Mon Apr 08, 2019 5:12 am
Dirty air filter,
John
I'll try that tomorrow. Thanks.
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Re: 2007 Tourist - dies at idle

Post by ReCycled » Sat Apr 13, 2019 9:15 pm

Remember it draws air from inside to out. So it will look clean if you just peak inside.

Don't over oil or you may end up with same symptoms. Maybe run without for quick test?
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