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Old 09-25-2012, 10:59 AM   #1
Remcycle
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Bike misfiring in cool weather.

When I'm cruising at slower speeds in cool weather(earlier mornings or late evenings), 30-50 mph, I'm encountering misfires. When it's warmed up outside(80+) I don't encounter them. Any ideas?

Riding 2001 Suz TL1000s 90degree twin. Issues occur in the 3-3.5k rpm range.
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Old 09-25-2012, 12:03 PM   #2
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You sure its misfires and not decel popping?
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Old 09-25-2012, 12:25 PM   #3
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Pretty sure. It's not a backfire. It's jumpy like its misfiring. It's 28k miles. Plugs changed within the last coupe years. Should I have the valves adjusted? Anyone ever run something like seafoam through their higher mileage bike to clean stuff? Might try cruising at higher rpm. Maybe I'm bogging it down.
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Old 09-25-2012, 12:40 PM   #4
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A fuel system cleaner is a good idea either way. Try the higher RPM's too
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Old 09-25-2012, 01:20 PM   #5
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sounds electrical..
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Old 09-25-2012, 01:25 PM   #6
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Whatcha mean, jimrad?
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Old 09-25-2012, 01:38 PM   #7
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If it feels like all power is lost intermittently...then there might be a loose connection or faulty switch...your gauges do any funky stuff when it happens? does it feel like you are running out of gas? **Have you done any recent mods (airfilter/ air-box, exhaust)??
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Old 09-25-2012, 01:44 PM   #8
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Old 09-25-2012, 01:49 PM   #9
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My SV has decel pop that sounds pretty gnarly in that range... The TL1000s was kind of the precursor to the SV heritage. Tell you what I will take the TLS off your hands for free because obviously it is more trouble than it is worth.
Ha! No way man.

It's not a pop, as much as the bike feels like its shutting off for a split second several times in a row. Wish I had a go pro I could post a video. Maybe I can figure a way to mount my iPhone to my helmet or bike to demonstrate.

Never noticed lights/gauge craziness. But, yes. Kind of feels like its out of gas. Does it no matter how much fuel is in there, though.
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Old 09-25-2012, 01:52 PM   #10
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Check to see if there is a Positive Air Intake Recycle valve on your bike (there is on the sv650 and sv1000) and remove it, or block it off, if i remember correctly (my bikes exhaust is stock so i dont have to worry about it) but that causes the decel pop you seem to be describing. Also, you may want to inspect the plugs to make sure they're not fouled (if improperly gapped plugs were installed even just a year ago they can foul)

I would also make your way over to the TL1000 specific forum as i've found that theres generally not "much" help here for bike-specific questions on this forum.
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Old 09-25-2012, 01:53 PM   #11
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When under quick accelerating/decelerating(the physics nerd in me hates that last term) I don't have the issues. Only when steady on the throttle or very slightly rolling on/off.
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Old 09-25-2012, 01:54 PM   #12
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Quote:
Originally Posted by Remcycle View Post
When I'm cruising at slower speeds in cool weather(earlier mornings or late evenings), 30-50 mph, I'm encountering misfires. When it's warmed up outside(80+) I don't encounter them. Any ideas?

Riding 2001 Suz TL1000s 90degree twin. Issues occur in the 3-3.5k rpm range.
You say it only does this in cooler weather-lower temp. right? question is does it clear up once the engine fully warms up?
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Old 09-25-2012, 01:56 PM   #13
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Ha! No way man.

It's not a pop, as much as the bike feels like its shutting off for a split second several times in a row. Wish I had a go pro I could post a video. Maybe I can figure a way to mount my iPhone to my helmet or bike to demonstrate.

Never noticed lights/gauge craziness. But, yes. Kind of feels like its out of gas. Does it no matter how much fuel is in there, though.
Bad gas?? condensation in tank from combo of engine heat and cold weather...might want to run some Chevron Techron Fuel sustem cleaner and take it for a good ride...

where u located?
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Old 09-25-2012, 01:59 PM   #14
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Located in Conroe. Only does it in cool weather, regardless of bike engine temp. Only times I noticed it doesn't happen is when ambient air temps are warm. 80f+

Could it have something to do with moist air in mornings/evenings? Sunday morning had lots of fog and moisture. It was especially bad.
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Old 09-25-2012, 02:01 PM   #15
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Could be.. what air filter u use?
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Old 09-25-2012, 02:01 PM   #16
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btw if ur running seafoam in your bike make sure you only use like 1/4 can or less.
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Old 09-25-2012, 02:03 PM   #17
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Old 09-25-2012, 02:11 PM   #18
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I don't know about the TLS engine but the SV 90 degree twin will sputter a little bit at 3k depending on which gear you are in. ..
Hmm. Maybe that's it. I'm going to try to cruise a little higher in the range and see if that is the issue.
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Old 09-25-2012, 03:12 PM   #19
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This one is a mystery. I think you may need to bring it to a shop and hook it up to their diagnostic comp. to find the problem, because this problem does'nt make any sense.
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Old 09-25-2012, 03:23 PM   #20
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Try Seafoam in the tank. Mix as directed. Worked for my HD
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