To much fuel, 4RT

[grim]

Everytime i fix one problem.. a new appear. This time, fuel consumption is way to high. If we give full throttle, it kinda just lose power. Driving normal, we have flame from exhaust, also sounds like a Ferrari.. hehe. Explosions from exhaust.

We checked the injector and sealings. All looking good. Tested the fuel pump and replacement fuel pump. Still same.. What else can do this?

Grim

[grim]

2 hours ago, oni nou said:

You forgot to mention that this bike is a 300cc Future Montesa [This may have some bearing on the answer you receive as your throttle body is probably the HRC one used on the Montesa works bikes around 2006/2007  ] or as a well informed Trials bike seller on Ebuy states in his ad for one a 'Futura' Montesa .....nothing like a seller who knows his products..

Throttle body is 2012 Honda standard, modified slightly by Future. Modification done: 28mm to 30mm opening.. Som function is normal as all Montesa, just a bit more flow. You have to remember that the Future Montesa is 99% same as any Montesa Repsol. Only difference is long stroke 80mm 292CC, cylinder head slightly modified valve out-take widen, and the throttle body as i said 30mm. So all functions are same as any Montesa Repsol/Cot a/RR or.. any 4RT. You can read about the modifications here: http://www.montesa4rt.nl/startpagina.php

[huski]

Separate and clean all the electrical connector plugs before you go any further 

[thall1]

sounds like and ECU issue....borrow an ECU/throttle body if you can and try it....it may not give you the same performance as the original but at lower revs it should be ok, if the problems go away you have your answer...good luck