vl125 intruder not firing on front cylinder.

[seanycozzie16v]

Will try that! That would also cause hard starting/not starting and obviously the misfire yeah?

[eastanglianbiker]

yes as its trying to start on 1 cylinder only

[seanycozzie16v]

When it does start on cylinder 1 it happily chugs away but as soon as I try to rev it. It dies

Edited March 2, 2016 by seanycozzie16v

[Stu]

have you tried swapping the plugs to see if it changes on which cylinder it runs on?

IE if its running on the rear cylinder if you swap the plugs does it then run on the front cylinder

if you have one coil you can also do this with the HT leads too

this will eliminate plug and HT problems

[seanycozzie16v]

Will test ht leads and coils more thourghly later on

[seanycozzie16v]

Finally got to the bottom of it the bike now runs sweet as a nut after a good run. A friend also suggested to me ht leads that could be shorting out on the body causing it to not spark. Found a bad ht lead. Cut it back a bit and tightly screwed it into the coil again. All back together with the air boxes back on and after a few turns of the starter it breathed into life only on the 1st cylinder though. A few pops and bangs later the 2nd cylinder finally burst into life completely changing the running of the bike. A good blast down my private Lane revving it the whole way up seemed to make things better. Probably a sticky valve as well. We'll anyways this problem has been sorted and the bike is going for its first mot in 8 years next week! Wish me luck!

[Stu]

this is why you start with the basic stuff

ie swap the plugs then the leads if the problem moves then you have narrowed it down straight away

it will have fired up after warming a little the plug will have been wet with fuel and need to be dried out before you have a good spark

glad you have it sorted

[Hoggs]

Hurrah! I was no help whatsoever so I'll do the bit I can do - wishing you Good luck!

[seanycozzie16v]

cheers for all the help guys!! new plug leads and plug caps on order!. new plugs in the bike today. runs like a dream now. need to sort out the pilot screw though. i dont know how many turns it should be. also need to adjust the accelerator pump slightly also. a bit jumpy on part throttle atm

[Tiggie]

pilot screw default setting is 3 1/4 turns out

this might come in useful for you

parts list

https://drive.google.com/file/d/0ByTs1fmYP3rjYl9ERlFXbkp5MTQ/view?usp=sharing

& service manual

https://drive.google.com/file/d/0ByTs1fmYP3rjR3ZfSy1LcjIzN2s/view?usp=sharing

[seanycozzie16v]

thank you kind sir! got the same bike i see! what exhausts are you running on your bike? standards or some nice turnouts?

[Tiggie]

standard and rusty

the problem you have had with the ht leads has happened to me and the person who owned the bike before me too. It has been a reliable machine all in all though

[Classickid21]

Check Crank breather make sure the hose is plugged up

[seanycozzie16v]

mines quite rusty too! i'm sure you would be as well after sitting for 8 years! but thankfully its on the road to recovery! its never going to be a showbike but a daily driver for me! just enough power to keep me happy!