Search found 149 matches

by tippo88
Wed Dec 20, 2017 3:23 pm
Forum: Lambretta Tech
Topic: Won't start from cold unless bump it.
Replies: 17
Views: 2256

Re: Won't start from cold unless bump it.

With the choke OFF, if you lift the outer gently at the carb end, how much free play does it have? In other words how far can you lift it out of the adjuster before you feel it lift the choke? Do this with the adjuster screwed half in thus allowing adjustment up or down. You need a little free play...
by tippo88
Wed Dec 20, 2017 3:22 pm
Forum: Lambretta Tech
Topic: Won't start from cold unless bump it.
Replies: 17
Views: 2256

Re: Won't start from cold unless bump it.

With the choke OFF, if you lift the outer gently at the carb end, how much free play does it have? In other words how far can you lift it out of the adjuster before you feel it lift the choke? Do this with the adjuster screwed half in thus allowing adjustment up or down. You need a little free play...
by tippo88
Sun Dec 10, 2017 1:21 pm
Forum: Lambretta Tech
Topic: Won't start from cold unless bump it.
Replies: 17
Views: 2256

Re: Won't start from cold unless bump it.

With the choke OFF, if you lift the outer gently at the carb end, how much free play does it have? In other words how far can you lift it out of the adjuster before you feel it lift the choke? Do this with the adjuster screwed half in thus allowing adjustment up or down. You need a little free play...
by tippo88
Sun Dec 10, 2017 6:51 am
Forum: Lambretta Tech
Topic: Won't start from cold unless bump it.
Replies: 17
Views: 2256

Re: Won't start from cold unless bump it.

had same issue on someone's bike recently (pwk30), tried everything and no joy so ended up changing stator and fires up first kick hot or cold. try taking plug lead off and check spark while kicking it, a weak spark indicates LT coil on its way out, if you have a spare stator try it....aint got owt...
by tippo88
Sun Dec 10, 2017 6:44 am
Forum: Lambretta Tech
Topic: Won't start from cold unless bump it.
Replies: 17
Views: 2256

Re: Won't start from cold unless bump it.

I have been using these carbs for years and what I would say is can you definitely see the choke plunger moving? and when at rest I,e closed try and lift the outer out of the ferrule you will see how much slack is in the outer, they are too short for the inner on standard cable. you have a couple o...
by tippo88
Sun Dec 10, 2017 6:28 am
Forum: Lambretta Tech
Topic: Won't start from cold unless bump it.
Replies: 17
Views: 2256

Re: Won't start from cold unless bump it.

which plug are you using? b7,8 or 9 if its a 9 thats a cold running plug great for long distances but can be a pain when starting from cold sometimes.B8 if its a new set up first off Thanks. It's an NGK BP7ES should I try an 8 do you think. Not sure if it makes a difference but average temp here in...
by tippo88
Mon Dec 04, 2017 4:22 am
Forum: Lambretta Tech
Topic: Won't start from cold unless bump it.
Replies: 17
Views: 2256

Re: Won't start from cold unless bump it.

Thanks guys much appreciatedwill try the above at the weekend.

Sent from my EVA-L19 using Tapatalk

by tippo88
Sat Dec 02, 2017 5:31 pm
Forum: Lambretta Tech
Topic: Won't start from cold unless bump it.
Replies: 17
Views: 2256

Re: Won't start from cold unless bump it.

mick1 wrote:try a larger choke jet, after checking the chokes working ok
Thanks! I think the choke is working as only bump starts with it on. Tried increasing the pilot jet from 32 to 34 but no difference in starting .

Sent from my EVA-L19 using Tapatalk

by tippo88
Sat Dec 02, 2017 5:27 pm
Forum: Lambretta Tech
Topic: Won't start from cold unless bump it.
Replies: 17
Views: 2256

Re: Won't start from cold unless bump it.

which plug are you using? b7,8 or 9 if its a 9 thats a cold running plug great for long distances but can be a pain when starting from cold sometimes.B8 if its a new set up first off Thanks. It's an NGK BP7ES should I try an 8 do you think. Not sure if it makes a difference but average temp here in...
by tippo88
Sat Dec 02, 2017 4:04 pm
Forum: Lambretta Tech
Topic: Won't start from cold unless bump it.
Replies: 17
Views: 2256

Won't start from cold unless bump it.

Starting a new thread for this. Completely rebuilt Li 125 engine with SR 185 cylinder, 28/30 PWK carb, gp crank, mb electronic stator ,af flywheel. Jets 32 120 After various setup problems mostly relating to warm starting I took it to a Dyno. Tuner binned the filter and changed main jet to 120. Got ...