Running issue (reposting)

[jimoc]

Hey all,

Posted this in the R3T section, but probably should be here.

I have been having an issue for about a week now that I am having trouble diagnosing.

Current info;
2008 R3T
30,000 miles on it
Stock exhaust, K&N air filter, Power-Tripp's advised tune for stock R3T's.
Checked all connections and vacuum ports/hoses/connections.

Before installing the new tune the bike would (at full operating temp) occasionally loose power when at freeway speeds when either A) holding steady throttle on a down hill incline, or B) when holding a steady throttle on nearly flat ground. (in and around 65-75 mph)

Now with the new tune that all has moved down to around 45-55 mph and has become much more pronounced.
It almost feels like the bike is momentarily starving for fuel.

As stated before; yes I am a former Triumph mechanic. These days I am completely out of that business. So I don't have the connections and contacts at Triumph anymore. Sadly including the Triumph diagnostic software.

My guess is that one of the sensors (TPS or temp) might be going.

Any and all help would be greatly appreciated.

↑
Not that I can hep you much but....when you lose power is it like hitting the kill switch, or if you keep the same power setting will the engine come to life again at a certain RPM(need more detail)


I went through the same problem like riding a wild bull bucking popping stalling and running lean.
After a bunch of work it ended up that the ethanol destroyed my fuel pump including the baffle and filter but the main problem was my pressure regulator which is part of the whole fiuel pump assembly.
Easy to replace and the parts are not too expensive. Mine is a 2008 r3t with 6000 miles sat too long with the ethanol added gas here in the USA (bad stuff for euro bikes)
I had pretty much a whole team of Triumph techs go through the entire bikes ecu, fuel, exhaust, ignition....
Runs perfect now

 

[zenbiker]

Take it to a dealer and have them reinstall the factory tune. At least..that will remove that as a potential problem. Start out again, with the basics and go from there.
You know there are only a few things it can be. Fuel delivery, ignition or TPS although it is difficult to understand why the RPM range that the problem happens could be from the TPS.