2001 Adventurer ignition problems - Triumph Forum: Triumph Rat Motorcycle Forums
Hinckley Classic Triples 885cc Classic Styled T3's: Legend, Thunderbird, Thunderbird Sport & Adventurer.

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post #1 of 12 (permalink) Old 06-18-2019, 08:01 PM Thread Starter
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2001 Adventurer ignition problems

I searched the forum for help with my problem, but most of the posts are over a decade old.

Long story short:

I won a 2001 Adventurer in a raffle from a local bike shop a few months ago. Since taking ownership, I've had problems with the bike. It did not come as advertised. The shop owner has decided he can be of no more use to me.

The issue I'm having seems to be common as I've read many posts discussing the same symptoms.

The bike runs fine for about 10 minutes. Then, I start getting popping in the pipes and soon after cylinders 2 and 3 stop firing altogether. It doesn't take long for the bike to die completely. After it cools off, the bike starts right back up and rides like a champ for another 10 minutes.

I've replaced the spark plugs, all three ignition coils and most recently the pick up sensor (crank sensor). None of these has fixed the issue.

I also tested the old pick up sensor and the ohms were climbing as I applied heat to it (hair dryer on hot/high). I've tested the current pick up sensor cold and it's reading at .540 ohms.

At this point, does this all point to a bad ignitor? I've consulted the manual, Google and a psychic, but I've found no way to test the ignitor.

Is there anything else I should try before I plop down the $300+ for a new ignitor?

Thanks in advance for any help.

Dave

Last edited by elmalo68; 06-18-2019 at 08:08 PM.
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post #2 of 12 (permalink) Old 06-18-2019, 09:12 PM
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Have you proved definitively the problem is ignition?

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post #3 of 12 (permalink) Old 06-19-2019, 10:22 AM Thread Starter
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The ignition system is where the symptoms are pointing me. What else should I be checking?
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post #4 of 12 (permalink) Old 06-19-2019, 11:47 AM
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Tank vent, perhaps?
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post #5 of 12 (permalink) Old 06-19-2019, 12:52 PM Thread Starter
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Tank vent, perhaps?
The tube isn't blocked or in any way obstructed that I can see. If the vent was the issue, wouldn't it be a problem from the start?
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post #6 of 12 (permalink) Old 06-19-2019, 01:41 PM
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As you draw fuel from the tank it creates a vacuum. When the fuel stops flowing you'll loose the cylinders in much the way you describe. Likewise if the flow cannot keep up with demand, (clogged screens?) eventually the fuel in the bowls will drop to the point where, one by one, the cylinders cut out.

It's easy enough to test for spark. If you haven't, do it and put the question to rest.

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post #7 of 12 (permalink) Old 06-19-2019, 02:38 PM Thread Starter
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Quote:
Originally Posted by WSC View Post
As you draw fuel from the tank it creates a vacuum. When the fuel stops flowing you'll loose the cylinders in much the way you describe. Likewise if the flow cannot keep up with demand, (clogged screens?) eventually the fuel in the bowls will drop to the point where, one by one, the cylinders cut out.

It's easy enough to test for spark. If you haven't, do it and put the question to rest.
I'll clean out the tank to see if that makes a difference. The inside of the tank is coated and there's an aftermarket petcock (with a fuel filter) on it (all done by previous owner). Is there a way to see or get to the screens?
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post #8 of 12 (permalink) Old 06-19-2019, 02:45 PM Thread Starter
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Looking at the diagram below, I don't have what's being described as pipe (20 & 22) or a roll over valve (21) as my vent setup. There's just a tube attached.
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Last edited by elmalo68; 06-19-2019 at 04:06 PM.
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post #9 of 12 (permalink) Old 06-19-2019, 05:30 PM
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Just open the cap - that will eliminate any possible vent issues
You can also just open the cap immediately after it quits running - if it goes 'whoosh' (you get that? ) then you have partial vac in tank and the vent is blocked. Then you can try running with cap open and see if it runs OK, or you have similar issue.
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post #10 of 12 (permalink) Old 06-19-2019, 07:05 PM
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If you think it's loosing spark that is the first thing I'd check for.

There is a screen in the inlet of the "T" fitting at the carbs where the fuel line from the tank connects. There are also screens on the standpipes in the tank. You have to remove the petcock to clean them.

If you have a fuel filter in line between the tank and the carbs that could be your problem right there. Try eliminating it once you have verified the presence of and cleaned the screens on the petcock and in the carb inlet.

Blow air into the vent line. It (the air) should come out of the small tube inside the filler neck.

The roll over valve is a good thing to have. It keeps the tank from emptying on the ground if you tip over. It must be installed right side up.

John
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