gasser
Just got it firing!
My 8V 1200 sport has recently started to run very rough and after much investigation I appear to be no further forward, so any help or guidance would be much appreciated. Symptoms are:-
1. Unable to hold a constant throttle at low speeds - it miss fires, jerks around and almost 8 strokes.
2. On a number of occasions, the tick over 'sticks' at 2000rpm.
3. When under heavy load with a wide throttle opening, the bike initially accelerates, then bogs down at approx. 4000rpm before eventually clearing its throat and then accelerating correctly.
4. When using the upper rev range, the bike seems to run fine, its only when in the low to medium rpm band.
5. Symptoms are more pronounced when engine is cold or warm. When engine is hot, I can still feel it doing it but it is far less pronounced.
In summary it feels like it is running way too lean and is being strangled.
My local Guzzi dealer has plugged the bike into the computer. There are no logged faults or errors, its is running the most up to date map (has done since last service 3000miles ago). He did re-set some parameters even though he said they were within required parameters (I think, throttle sensor, lambda sensor and air temperature) and eureka; it ran perfectly on the ride home. However, on using the bike some 3hrs later, all the original rough running symptoms had returned.
Actions I have taken:-
1. Tank drained and fuel pump removed to ensure no water etc was in the fuel (nothing found)
2. Spark Plugs checked - no colouration on them at all (newly fitted some 700 miles ago)
3. Valve clearances checked - all correct.
4. Air box removed - no foreign objects found (running a K&N since service 3000 miles ago)
5. Injectors removed and visually checked for any blockages - nothing found.
6. Crank sensor checked - measured 697ohm - within tolerance.
7. Air temp sensor checked - measured 3.06ohm - within tolerance.
I also checked the O2 Lambda sensor. I got a reading of 0.01ohm's. Is this correct? According to the manual I have I should be able to measure 12.8ohm's at 20c. Ambient temperature was 25C. Is this the culprit?
Any help would be much appreciated. Thanks
1. Unable to hold a constant throttle at low speeds - it miss fires, jerks around and almost 8 strokes.
2. On a number of occasions, the tick over 'sticks' at 2000rpm.
3. When under heavy load with a wide throttle opening, the bike initially accelerates, then bogs down at approx. 4000rpm before eventually clearing its throat and then accelerating correctly.
4. When using the upper rev range, the bike seems to run fine, its only when in the low to medium rpm band.
5. Symptoms are more pronounced when engine is cold or warm. When engine is hot, I can still feel it doing it but it is far less pronounced.
In summary it feels like it is running way too lean and is being strangled.
My local Guzzi dealer has plugged the bike into the computer. There are no logged faults or errors, its is running the most up to date map (has done since last service 3000miles ago). He did re-set some parameters even though he said they were within required parameters (I think, throttle sensor, lambda sensor and air temperature) and eureka; it ran perfectly on the ride home. However, on using the bike some 3hrs later, all the original rough running symptoms had returned.
Actions I have taken:-
1. Tank drained and fuel pump removed to ensure no water etc was in the fuel (nothing found)
2. Spark Plugs checked - no colouration on them at all (newly fitted some 700 miles ago)
3. Valve clearances checked - all correct.
4. Air box removed - no foreign objects found (running a K&N since service 3000 miles ago)
5. Injectors removed and visually checked for any blockages - nothing found.
6. Crank sensor checked - measured 697ohm - within tolerance.
7. Air temp sensor checked - measured 3.06ohm - within tolerance.
I also checked the O2 Lambda sensor. I got a reading of 0.01ohm's. Is this correct? According to the manual I have I should be able to measure 12.8ohm's at 20c. Ambient temperature was 25C. Is this the culprit?
Any help would be much appreciated. Thanks