LT MAP Tubes and flat spot issue. - Page 2 - Triumph Forum: Triumph Rat Motorcycle Forums
Thunderbird Twin - Technical Talk Technical talk for the big Thunderbird twin

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post #11 of 12 (permalink) Old 04-17-2019, 08:40 PM Thread Starter
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There are some good suggestions on here, thanks all. Will get it over to another Dyno dude and try a few things. May even remove the PC5, re-fit the O2 sensors and see how we go. Cheers

Die hard LT owner - you have to be with all the issues mine has had. :-)
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post #12 of 12 (permalink) Old 04-18-2019, 09:14 AM
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Keep us posted on your findings. Just to make things right mine will cut out at highway speed between a gearshift change up or down when the idle speed is different.....and is intermittent as previously stated. One bad habit I may have done is max out the fuel tank upon a refill...perhaps causing fuel to go into the overflow tube. Bought my LT second hand with 2500 miles and the 4 screws holding the plate where the oil filter is were stripped. Suffice it to say previous maintenance history is unknown. Pulley bearing had to be replaced at 11k, 2 of the 4 plugs were oil fowled. Working on maintenance overhaul now and replaced plugs again DPR6 EA9 with standard gap. All 4 were nice and tan colored as should be. Replaced fuel filter last year with one from an auto store that was clamp able with seam in middle. Got the correct Mahle fuel filter and replaced it this year making sure I had the rubber intake cover in the right position....and it was. Remainder of maintenance should be completed I can get it out to practice and renew the stale riding skills from winter dormancy.
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