Hi there - im hamish.
I just purchased a used 07 motovert expert with a 140cc engine last week.
Being my first pit bike.
Well can some one help me out.
When cold the bike starts usually on the second kick (with out no choke).
When the bike is warmed up it has a tendency to stall when slowing down for a intersection - carbie closed engine braking ect.
The bike seems impossible to then restart when warm - im getting sick of pushing it home.
Ive:
- changed plugs
- removed carbie / cleaned it (the idle air bleed screw is set at 2.5 turns from bottoming out), needle is on the 2nd lower c - clip setting (i.e. 2nd richest).
- running a uni filter (i noticed that this is relatively dry and non restrictive)
I have added about 1/2 tank of regular unleadded (my spare boat fuel - about 2months old) to the premium allready in the bike upon purschase.
I did manage to take the bike for a decent drive here on bribie island in the sand - once going she had plenty of stick in all 4 gears - i hardly got into 4th in the soft and tricky sand. What i did notice was when i was in say 3 gear under acceleration and then i back off (throttle closed) engine braking it tended to back fire and pop - IS THAT NORMAL??
At the same time with throttle closed and usually coming to a intersection in the bush tracks - the engine was stalling each time - and i couldnt keep it going with a squirt of the throttle??? - so i guessed that the bike may be a little lean down low so i screwed in (clockwise) the air blead screw for idle (on the intake port side of carbie).
That appeared to reduce the enging breaking back firing and the stalling of the motor also.
I kept driving trying to get better at the bike and it started to feel as if it was runniing rougher (not very good down low/ bogging down so to speak) - erradic acceleration.
Is this a function of the bike getting hot? I was riding in various soft sand tracks - i used about a total of 1/2 tank of fuel in continious driving??
Any way the bike kept stalling often where id least wish it did and luckly the time at which it would not strat again was only a block from home.
The next day when it was stone cold, no choke - she fired up as usual on the 2nd kick.
And then say with in 2 min idle/warm up and a quick blat up and down my street - she stalls (say when you decelerate clutch in about to drive over the kerb) and just wont start again???
My only comment is that the bike is feeling easier (once warm - moreso) to kick over.
Hence im a little worried.
Any help would be greatly appreicated.
PS i was told that the motor had a bit of a cam in it.
I just purchased a used 07 motovert expert with a 140cc engine last week.
Being my first pit bike.
Well can some one help me out.
When cold the bike starts usually on the second kick (with out no choke).
When the bike is warmed up it has a tendency to stall when slowing down for a intersection - carbie closed engine braking ect.
The bike seems impossible to then restart when warm - im getting sick of pushing it home.
Ive:
- changed plugs
- removed carbie / cleaned it (the idle air bleed screw is set at 2.5 turns from bottoming out), needle is on the 2nd lower c - clip setting (i.e. 2nd richest).
- running a uni filter (i noticed that this is relatively dry and non restrictive)
I have added about 1/2 tank of regular unleadded (my spare boat fuel - about 2months old) to the premium allready in the bike upon purschase.
I did manage to take the bike for a decent drive here on bribie island in the sand - once going she had plenty of stick in all 4 gears - i hardly got into 4th in the soft and tricky sand. What i did notice was when i was in say 3 gear under acceleration and then i back off (throttle closed) engine braking it tended to back fire and pop - IS THAT NORMAL??
At the same time with throttle closed and usually coming to a intersection in the bush tracks - the engine was stalling each time - and i couldnt keep it going with a squirt of the throttle??? - so i guessed that the bike may be a little lean down low so i screwed in (clockwise) the air blead screw for idle (on the intake port side of carbie).
That appeared to reduce the enging breaking back firing and the stalling of the motor also.
I kept driving trying to get better at the bike and it started to feel as if it was runniing rougher (not very good down low/ bogging down so to speak) - erradic acceleration.
Is this a function of the bike getting hot? I was riding in various soft sand tracks - i used about a total of 1/2 tank of fuel in continious driving??
Any way the bike kept stalling often where id least wish it did and luckly the time at which it would not strat again was only a block from home.
The next day when it was stone cold, no choke - she fired up as usual on the 2nd kick.
And then say with in 2 min idle/warm up and a quick blat up and down my street - she stalls (say when you decelerate clutch in about to drive over the kerb) and just wont start again???
My only comment is that the bike is feeling easier (once warm - moreso) to kick over.
Hence im a little worried.
Any help would be greatly appreicated.
PS i was told that the motor had a bit of a cam in it.