Jetting help -2011 ec300 -UK

[Quigs]

Hi all.
Im looking for some help with jetting my bike.
The bike is new to me so I am not great with jetting but get the general idea.

When I ride the bike it feels to me that it is overfuelling as it splutters and hesitate's.

Currwnt Current settings are as follows.

PJ - 38
Needle - N1EF
clip - 1st (top)
MJ - 175
A/S - 1.5 out.

The bit really confuses me is the needle, ive looked through the database and see so many different needles mentioned to try.

My current riding conditions are:
Temp: 10-15 degress C
Altitude - sea level to 1500ft

Any help much appreciated
Thanks

[motopsycho87]

Checked your crank bearings perhaps? Try dropping the needle 1 clip also.

[Quigs]

I will have a look at the crank bearings, whats the best way to check them?

The clip is in the top posistion now so wont be ablw to drop the needle anymore

Thinking of ordering the JD Jet kit. Will it be worth it?

[Jakobi]

Search these in the jetting section and read for days.

NEDW
NECW
N3EJ
N3CJ
NEDJ
NECJ
N3EW
N3CW

Should turn up a few threads.

[motopsycho87]

Does the bike smoke a lot at start up?
Is there play in the flywheel?
Is there play in the right hand crank pulley?

Changing the seals is easy, and rebuilding the bottom end isn't too bad. Chances are if the seals have gone there is a faulty bearing at fault. Ive changed many crank seals only to repeat the process shortly after.

Perhaps you have a breather clocked?


Try the jetting route first, but if you find yourself far from the range of other riders jetting then chances are there is something mechanical at fault.

CHANGE YOUR SPARL PLUG! BR8EIX

[Quigs]

The bike does smoke a bit at start up but aint rhat bad to be honest.

As for the play I will take the cover off and have a look to see if any play in the bearing.

[motopsycho87]

Get an iridium plug in there too. Made a world of difference to my bike, and definitely got rid of all 'loading up' issues. (This is happening because the oil is fouling the plug on relaxed riding, it then arcs across as the revs increase until it reaches the self cleaning temperature)

[Jakobi]

I found the EIX plugs to be worse (when used with an overly rich needle). Smaller tip fouled up easier and took more to clear up. Magic is all in the jetting - assuming everything mechanical is correct.

[Quigs]

I have managed to get the bike running alot better now by plauing with the Air screw, currently at 1.75 turns out.

I ordered a new needle which has just arrived, N3CJ.

What settings do you recommend try as a start with this needle.
temp is currently around 7-8 celcius,
Also have a 42PJ

Thanks

[Jakobi]

Cold. 45 pilot clip 4. 180 main. Then lean it off as req. Assuming 38mm as2 carb