Page 1 of 3
Does this look to lean
Posted: Mon Apr 17, 2017 5:15 pm
by dave411
Its a 198 Mugello,26mm Delly,GP 50 pipe.
Main 100
Atomizer AV266
Needle x7
Slide 45
Timing 23 static,Varitronic fitted.
Re: Does this look to lean
Posted: Mon Apr 17, 2017 5:48 pm
by garry inglis
how many miles on that plug it looks bran new or very lean
Re: Does this look to lean
Posted: Mon Apr 17, 2017 6:08 pm
by dave411
garry inglis wrote:how many miles on that plug it looks bran new or very lean
Hi Gary,its done about 80 miles.
Sent from my iPhone using Tapatalk
Re: Does this look to lean
Posted: Mon Apr 17, 2017 6:13 pm
by garry inglis
ive just been in my shed to look at my book and ive got this main 118 /120 av266 2nd clip x7 pilot 50/55 slide 40 choke 70 i think you want try one change at a time and keep doing plug chops but better to be rich than lean
Re: Does this look to lean
Posted: Mon Apr 17, 2017 6:48 pm
by dave411
garry inglis wrote:ive just been in my shed to look at my book and ive got this main 118 /120 av266 2nd clip x7 pilot 50/55 slide 40 choke 70 i think you want try one change at a time and keep doing plug chops but better to be rich than lean
Sent from my iPhone using Tapatalk
Re: Does this look to lean
Posted: Mon Apr 17, 2017 6:49 pm
by dave411
Thanks Gary.Will try a 120 main first.Will report back in a few days.
Thank you.
Sent from my iPhone using Tapatalk
Re: Does this look to lean
Posted: Mon Apr 17, 2017 7:10 pm
by mick1
Try putting an older plug in (oily....ish) and see if it changes colour.
If your running in are you marking throttle positions and doing plug chops at different throttle positions ? If your running-in you might not be coming onto the main jet and you could be lean elsewhere (pilot, needle, etc).
Re: Does this look to lean
Posted: Mon Apr 17, 2017 7:43 pm
by dave411
mick1 wrote:Try putting an older plug in (oily....ish) and see if it changes colour.
If your running in are you marking throttle positions and doing plug chops at different throttle positions ? If your running-in you might not be coming onto the main jet and you could be lean elsewhere (pilot, needle, etc).
Thanks Mick.Yes,I am running in,but have more oil in the mix.25:1.
It is stuttering mid range,but when it gets the revs up it flies.Havent done many plug chops to be honest,will just try a bigger main and see what happens.
Sent from my iPhone using Tapatalk
Re: Does this look to lean
Posted: Mon Apr 17, 2017 7:54 pm
by mick1
get some masking tape and mark your throttle 1/8. 1/4. 1/2. 3/4
Run about a mile holding at the position then cut the engine and check the plug.
This will help identify if your, pilot, needle (+ clip position), slide, atomizer and main jet are ok
Re: Does this look to lean
Posted: Mon Apr 17, 2017 7:56 pm
by dave411
mick1 wrote:get some masking tape and mark your throttle 1/8. 1/4. 1/2. 3/4
Run about a mile holding at the position then cut the engine and check the plug.
This will help identify if your, pilot, needle (+ clip position), slide, atomizer and main jet are ok
Ok,will give that a go.
Thank you.
Sent from my iPhone using Tapatalk
