Modern Vespa : P200E Ducati weak spark

P200E Ducati weak spark

OP Moto64 UTC details Ossessionato '64 Motovespa 150S (177) , '65 VBB, '66 Allstate SF, '66 180SS, '58 LD 125 (150) Joined: UTC Posts: 2291 Location: S.Salem, NY
OP Moto64 Ossessionato '64 Motovespa 150S (177) , '65 VBB, '66 Allstate SF, '66 180SS, '58 LD 125 (150) Joined: UTC Posts: 2291 Location: S.Salem, NY	UTC quote HT wire connections and cap both very good with various new plugs. CDI? I am reading .423k ohms through green coil.

Gravelrash2004 UTC details Addicted P Series / Li / LML / Motovespa Joined: UTC Posts: 740 Location: UK
Gravelrash2004 Addicted P Series / Li / LML / Motovespa Joined: UTC Posts: 740 Location: UK	UTC quote What are the rest of your readins? Red white Green white Red green

OP Moto64 UTC details Ossessionato '64 Motovespa 150S (177) , '65 VBB, '66 Allstate SF, '66 180SS, '58 LD 125 (150) Joined: UTC Posts: 2291 Location: S.Salem, NY
OP Moto64 Ossessionato '64 Motovespa 150S (177) , '65 VBB, '66 Allstate SF, '66 180SS, '58 LD 125 (150) Joined: UTC Posts: 2291 Location: S.Salem, NY	UTC quote Gravelrash2004 wrote: What are the rest of your readins? Red white Green white Red green W= ground R-W 107.5 Ohm trigger coil G-W .429 k O power R-G .535 k O not sure what this is checking

Moto64

UTC

details

Ossessionato

'64 Motovespa 150S (177) , '65 VBB, '66 Allstate SF, '66 180SS, '58 LD 125 (150)

Joined: UTC
Posts: 2291
Location: S.Salem, NY

Moto64

Ossessionato

'64 Motovespa 150S (177) , '65 VBB, '66 Allstate SF, '66 180SS, '58 LD 125 (150)

Joined: UTC
Posts: 2291
Location: S.Salem, NY

UTC quote

On the LML in the Motovespa :

R-W 107.5 O
G-W .429 kO
R-G .535 kO

OK... I took the CDI out of the Motovespa (which runs flawlessly) and plugged it in and it's exactly the same. Compared to the plug flash of a points ignition it looks wimpy to me. Might be just cranking speed and the KS gear on this thing is worn so it catches late. I have an HT in-line flash thing that shows the same orange flash on both CDIs so maybe it's all just fine.

SaFiS UTC details Ossessionato 1979 P150X, 1983 P200E, 1987 PK125XL Elestart, 1988 T5, 1995 PX200E, 2011 Yamaha Fazer 600 S2 Joined: UTC Posts: 4792 Location: Veria, Greece
SaFiS Ossessionato 1979 P150X, 1983 P200E, 1987 PK125XL Elestart, 1988 T5, 1995 PX200E, 2011 Yamaha Fazer 600 S2 Joined: UTC Posts: 4792 Location: Veria, Greece	UTC quote The low tension coil is probably dying. Values are the ones below, no need to measure R-G you just add the values of the LT coil and pickup coil... G-W: 500±20 Ohms R-W: 110±5 Ohms

Gravelrash2004 UTC details Addicted P Series / Li / LML / Motovespa Joined: UTC Posts: 740 Location: UK
Gravelrash2004 Addicted P Series / Li / LML / Motovespa Joined: UTC Posts: 740 Location: UK	UTC quote Safis answered it spot on before I got back to this. Your readings are on the low side, even for an LML. The coil on an LML is typically a lower resistance than the genuine PX and can read and function as low as 450 O. Time to rebuild or replace tbe stator plate IMHO as the values are way down on spec.

OP Moto64 UTC details Ossessionato '64 Motovespa 150S (177) , '65 VBB, '66 Allstate SF, '66 180SS, '58 LD 125 (150) Joined: UTC Posts: 2291 Location: S.Salem, NY
OP Moto64 Ossessionato '64 Motovespa 150S (177) , '65 VBB, '66 Allstate SF, '66 180SS, '58 LD 125 (150) Joined: UTC Posts: 2291 Location: S.Salem, NY	UTC quote Thanks, I'll replace this coil. https://www.scootermercato.com/Scooter-Parts/Stator-Coils/231095

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