Cutting out at highway speeds - trip interuption - Triumph Forum: Triumph Rat Motorcycle Forums
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post #1 of 12 (permalink) Old 11-03-2012, 09:04 PM Thread Starter
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Exclamation Cutting out at highway speeds - trip interuption

I'm stuck on the road till I find the problem.

I left home today for a weekend ride to Half Moon Bay, and then to San Fransisco. I've come of of the road because of these symptoms...

As I throttle down the highways, at about 60-70 mph, the bike begins to cough as if it's not getting fuel. This is intermittent, and happens while cruising, as well as throttling. This just started happening about a hundred miles into the trip, with about 80 more to go.

Before I stopped to refill the fuel tank, I was on full throttle when I had to switch it over to reserve, losing power. It started immediately and ran good for about 30 miles until the symptoms began.

Could it be bad fuel, clogged filter, or something else. All advice to be taken in consideration, ASAP.

07 Bonne Black with ARK, AI removed, K&N Pods, Nology Coil and wires, D&D full exhaust, 135 mains/42 pilots, 1 shim @ sea level. Biltwell trackers, Hagon 2810's & progressive fork springs. all blacked out.
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post #2 of 12 (permalink) Old 11-03-2012, 09:33 PM
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Check that the tank breather hose is clear. There's a procedure to test it at the link below, but you can just pull it off the tank for now or ride with the gas cap slightly undone to allow air into the tank.

http://www.triumphrat.net/twins-tech...-and-tips.html
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post #3 of 12 (permalink) Old 11-03-2012, 09:34 PM
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Originally Posted by ovni View Post
I'm stuck on the road till I find the problem.

I left home today for a weekend ride to Half Moon Bay, and then to San Fransisco. I've come of of the road because of these symptoms...

As I throttle down the highways, at about 60-70 mph, the bike begins to cough as if it's not getting fuel. This is intermittent, and happens while cruising, as well as throttling. This just started happening about a hundred miles into the trip, with about 80 more to go.

Before I stopped to refill the fuel tank, I was on full throttle when I had to switch it over to reserve, losing power. It started immediately and ran good for about 30 miles until the symptoms began.

Could it be bad fuel, clogged filter, or something else. All advice to be taken in consideration, ASAP.
Dirty fuel line or something might be pinched? Sorry to hear you are having problems. I was at Woodside today riding 84 and Pescadero road. Too bad they just started ripping apart Skyline Blvd, be careful if you are going up there, Skyline Blvd has tons of gravel.
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post #4 of 12 (permalink) Old 11-03-2012, 10:10 PM Thread Starter
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Originally Posted by Forchetto View Post
Check that the tank breather hose is clear. There's a procedure to test it at the link below, but you can just pull it off the tank for now or ride with the gas cap slightly undone to allow air into the tank.

http://www.triumphrat.net/twins-tech...-and-tips.html
Thanks Forchetto! I've read some other posts of your pertaining to the igniter coupler under the seat as well as others here, and the general feeling I get is vaporlock. I don't think it's coil related, but will check the connectors at the front of the frame under the tank as soon as I get out of this cafe.

I'm going to get back out on the road after removing the fuel breather under the tank. It's possible that it was kinked during the Innovate (temp) install when I removed the tank to access the under tank connectors. Even so, that was 2,000 miles ago and no problems until now.

I'll keep it under 60 till I get to a good place to further check the condition.

07 Bonne Black with ARK, AI removed, K&N Pods, Nology Coil and wires, D&D full exhaust, 135 mains/42 pilots, 1 shim @ sea level. Biltwell trackers, Hagon 2810's & progressive fork springs. all blacked out.
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post #5 of 12 (permalink) Old 11-03-2012, 10:12 PM Thread Starter
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Dirty fuel line or something might be pinched? Sorry to hear you are having problems. I was at Woodside today riding 84 and Pescadero road. Too bad they just started ripping apart Skyline Blvd, be careful if you are going up there, Skyline Blvd has tons of gravel.
Thanks for the heads up about SF. I've never ridden in the city and haven't been there for many years.

07 Bonne Black with ARK, AI removed, K&N Pods, Nology Coil and wires, D&D full exhaust, 135 mains/42 pilots, 1 shim @ sea level. Biltwell trackers, Hagon 2810's & progressive fork springs. all blacked out.
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post #6 of 12 (permalink) Old 11-03-2012, 10:18 PM
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Thanks for the heads up about SF. I've never ridden in the city and haven't been there for many years.
Sorry ovni. I was quick to the punch assuming you know where i was talking about. You said you were at Half Moon bay. Skyline Blvd runs at the top of the hill between Highway 1 and 280 from San Mateo all the way to Saratoga. Skyline Blvd also links you to Alice Restaurant at Woodside which is a huge motorcyclist hangout because of twisty highway 84 and Pescadero Road

https://www.google.com/maps?q=&layer...CIsBEJ8CKAAwAw
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post #7 of 12 (permalink) Old 11-04-2012, 12:36 AM Thread Starter
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Sorry ovni. I was quick to the punch assuming you know where i was talking about. You said you were at Half Moon bay. Skyline Blvd runs at the top of the hill between Highway 1 and 280 from San Mateo all the way to Saratoga. Skyline Blvd also links you to Alice Restaurant at Woodside which is a huge motorcyclist hangout because of twisty highway 84 and Pescadero Road

https://www.google.com/maps?q=&layer...CIsBEJ8CKAAwAw
Thanks for the url to Alice's. I've had a few mentions on my post about the place, and now I know where it is...

I made it to HMB just moments ago. I was in Tracy when we corresponded, last. To rectify the OP, I moved thew carb breather up and to the left side, removed the tank breather (temporarily), checked the spade terminals on my coil....one was loose and could have had bad contact intermittently. All of those or a combination of them did the deed and got here without sputtering, albeit, way late.

By the way, I saw Skyline road as I crossed the pass. I'll pull out in the morning sometime, and head on up to Alice's for lunch, then onto SF.

Because I got here too late, I'll need a campground to camp for the night. Is there one nearby that you know of?

07 Bonne Black with ARK, AI removed, K&N Pods, Nology Coil and wires, D&D full exhaust, 135 mains/42 pilots, 1 shim @ sea level. Biltwell trackers, Hagon 2810's & progressive fork springs. all blacked out.
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post #8 of 12 (permalink) Old 11-04-2012, 12:46 AM
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Just for giggles, check the battery terminals... make sure they're on good and tight

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post #9 of 12 (permalink) Old 11-08-2012, 12:07 AM Thread Starter
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Just for giggles, check the battery terminals... make sure they're on good and tight

Sent from my SGH-I747 using Motorcycle.com Free App
It was the first thing checked.

07 Bonne Black with ARK, AI removed, K&N Pods, Nology Coil and wires, D&D full exhaust, 135 mains/42 pilots, 1 shim @ sea level. Biltwell trackers, Hagon 2810's & progressive fork springs. all blacked out.
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post #10 of 12 (permalink) Old 11-08-2012, 03:06 PM
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Had this happen to me a couple of weeks back and I had to have the biked towed to the shop. While on the side of the road, I'd tried clearing the breather tube to ensure that it wasn't blocked - no luck.

Bike shop basically said my spark plugs needed changing as they'd been gunked them up (maybe the Sea Foam I'd been running?). You might want to check yours.
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