Aprilia Pegaso Trail choking

[scorpio]

Hello Everyone,

I am new to this forum and i found to be very helpful.

I bought Pegaso Trail 2 months ago and i am very happy to have this bike, it is very good. Everything was OK until 750km, after that there was a problem.

I have noticed a sudden change in performance, like the bike is choking and losing power when i fully release the throttle. When not moving and the engine is running there is no difference, but when riding in 2'nd gear (until 4700-5000rpm) and i change in 3'rd write after releasing the clutch the bike is rapidly slowing down if the throttle is not turned above 1/3. I also noticed increased fuel consumption. I live in Macedonia, and from several conversations with the our Aprilia service I can see that they are not very experienced with repairing big bikes, they are more oriented in repairing scooters.

Please help

[keithc]

This could be one or a mixture of several problems. It may be the ECU, or one of its sensors.
I would check the sensors first, starting with the throttle position sensor, then the engine tempreture sensor. Then its just a matter of testing in a logical manner.
Sorry I cant be of more help

Keith

[driver4]

Nice to hear thoughts from you, but please do not use the "term" Macedonia, your legitimate name of your country is Skopje or FYROM.

[Panda]

Yourdealer should have an Axione diagnostic tool, they need to plug it into the bike and check for ECU errors. I agree with what KeithC says, sounds like ECU or TPS is faulty.

[scorpio]

Thanks for the reply,

I have already made some adjustments on idle speed rpm and throttle position sensor (from 16 to 20 deg) and there was some improvement but still it is not like it should be. I will wait until the first service (next week) to see what the service will do. Aprilia Service in Skopje do not have any diagnostic tool, they do not even adjust the valves after 1000km. I will adjust the valves by my self with help from a friend who is very experienced in car and motorcycles repairs, and after that i will try again to adjust the TPS, CO and i will check the ignition timing (although it can not be re-adjusted). After that ???????

Thank you guys, if you think of something else please reply.

[keithc]

Scorpio

It may be an idea to get a workshop manual if you dont already have one. There is a link on here somewhere that leads to a place where you can download it FOC :)

Keith

[scorpio]

Thanks Keithc

I already have the workshop manual and also the Service Manual for Yamaha XT660. They are nice to find where every part is and some values regarding the sensors, but the troubleshooting section is very poor.
The temperature sensors are ok since in diagnosis menu they are reading the temperature variation.
Do you know what adjusted value you have for the TPS and CO.
Also there is one sensor on the left exhaust pipe just below the coolant radiator, do you know what is that?
Next i will check the SAS valve.

Scorpio

[keithc]

I will check my readings for you tomorrow, if I have the time (Work :( ). Sensor on the exhuast is a Lambda sensor. You mus have a 2007 model.

Keith

[scorpio]

Hi, driver4

Since you are from Greece, do you know whether there is an authorized Aprilia service in Thessaloniki? Because the service in Skopje is not equipped like a service should be, I am planing to make my first service in Greece and to perform every recommended checks by Aprilia, even valve adjustment.

If you have, please send me some contacts (address, e-mail...)

[driver4]

O.K scorpio I got your message. I give you the addresses of the official service shops:

Ermidis, Thessaloniki, N.Egnatia 232, Tel:2310 852456
Kourtis, Thessaloniki, Lagkada 27, Tel: 2310530208
Ploskas - Adamou, Thessaloniki, Nap.Zerva 18, Tel: 2310888012

All the names I give you are surnames. If you decide to come to Thessaloniki for the first service - and I think the most important - I attach the addresses in Greek. Thessaloniki is Θεσσαλονίκη in Greek. If you have problems to find the shops, just ask!
I hope I give you some help, take care!:)

[scorpio]

Thank you driver4,
you gave me very helpful information. Most definitely I will come in Greece for the service. If you are from Thessaloniki maybe we can meet each oder and drink couple of beers :cheers:

[driver4]

Unfortunately my home town, Volos, is 2.5 hours from Thessaloniki. Be careful and why not, someday a meeting in Greece will be great specially in the summer!