Loss of power after several minutes of running

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SClubSuzuki
On the street
Posts: 22
Joined: Mon Jan 26, 2015 2:04 pm
Country: USA
Suzuki 2-Strokes: Suzuki A50, S32 Olympian

Loss of power after several minutes of running

Post by SClubSuzuki »

Hello all, my bike has a noticeable loss of power after it has warmed up and been running for a while. Compression is excellent. Timing is spot on. The bike always regains it’s power after not being used for a few hours. I read someone that the ignition coils could be the culprit. The points/condenser are not new. Any ideas? The bike is a ‘66 S32-2
Thanks!
Craig380
Expert racer
Posts: 1250
Joined: Mon Dec 01, 2008 2:52 am
Location: Manchester, UK

Re: Loss of power after several minutes of running

Post by Craig380 »

Failing coils usually cut out and lose ignition completely when they warm up (as they get warmer, the internal windings expand and short out), but you could try another coil if you can get one.

Also check the vent hole in the gas tank cap is clear and able to flow air - that would also give the symptoms you describe.
1976 GT380 - wounded by me, and sold on
2006 SV650S - killed by a patch of diesel and a kerb in Feb 2019
2017 SV650 AL7 - naked and unashamed
sportston
Expert racer
Posts: 1119
Joined: Wed Jul 10, 2013 12:04 pm
Country: England, UK
Suzuki 2-Strokes: FZ50, GP100, RG125 Gamma, GT380, Bandit 1200S

Re: Loss of power after several minutes of running

Post by sportston »

Could be float fuel level getting too low after a while. Is the float level set correctly? Is the fuel supply restricted/clogged?
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