Triumphrat

Sprint2red

Hi all

I have a 96 Thunderbird that keeps exhibiting classic pickup coil problems.

After running for while, it will intermittently start losing power and then cut out alltogether. Leave it 10 minutes and it starts again fine.

I have replaced the pickup coil, replaced the Gil coils with Nology ones, cleaned the carbs and the fuel cap is not causing a fuel vacuum. But it is still doing it. It's not so bad at the moment, but it's pretty cold and it was worse when the weather was hotter.

I went to check the tip-over valve but found that it was missing, along with the breather hose. So I'll need to fit a new one, but I don't think that is the problem.

The only thing I can think of is changing the ignitor box. What does anyone think?

Oh, the horn doesn't work (it does when attached directly to the battery but not using the button). Probably just a dirty terminal or something similar.

Any ideas for what to check next as if it's not the ignitor box I'd rather not waste the money.

jimmyj900

Is this happening at an idle in the garage or on the road?

Jim

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Sprint2red

Sorry, should have said.

The bike idles fine, seems to happen after riding for while and generally seems to show around 4,000-5,000 rpm.

Although it did once 0.5 miles from home on a hot day.

Tre900

While your at home in garage..fire it up..let it idle for a little while, then giggle the key in the ignition a little bit (don't force it in any direction).

See if at any point the movement of the key kills the bike. If so it could be your ignition has a lose connection.

Had classic coil symptoms but resulted in ignition and was hard to troubleshoot cause it was so speratic.

Gooooooooooooooooooooooooooooood luck

jimmyj900

Does this problem occur with the fuel tap in the ON position (arrow down), the RES position (arrow up) or both?

How much fuel is in the tank?

Jim

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jimmyj900

Rather than let this thread drift off into limbo...

I suspect that there's cr*ap in the fuel tank that's either restricting flow through the tap or has mostly plugged the duckbill filter in the carburetor fuel connection 'T'.

The tank may have rust (from the fuel tank itself or the local gas station), dirt (another gas station freebie), wax buildup in the bottom of the tank or some other nasty floating around that's blocking the fuel tap filter.

If there's dirt or rust in the tank, then it's found it's way to the duckbill and that's probably reduced flow to the point that there isn't sufficient flow into the float bowls and the bike starves out. It would then take a few minutes for the fuel level to come back to normal so the bike will start.

Jim

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Sprint2red

Been away working for a couple of days.

I tried the ignition key this evening and everything was fine, so it's off with the fuel tank and out with the tap this weekend.

Thanks for the advice, and everything's crossed that it'll get fixed this weekend.

Cheers
Dave