racer51
Active Member
Hi, Everyone. I'm seeking the wisdom of experience in solving a problem with my SV Gen1 engine.
Symptoms:
Troubleshooting:
Looking for solutions on where to start troubleshooting next.
Thanks in advance for any suggestions you might offer.
Symptoms:
- No power, engine struggles to rev starting at about 5k rpm.
- First detectable issue was that the fuel tank was pressurizing. Performance was "notchy" to start with.
- As soon as bike was leaned over in a corner, it seemed as if all power was lost and almost sounded like it was running on one cylinder.
- Sunday morning, bike turned over about 1/2 a revolution and "locked up" so that the starter would not turn it over. I managed to "unlock" it by putting it in gear and manually rotating the rear wheel against the seeming locked up engine.
Troubleshooting:
- First two laps on bike on Sat. morning, engine seemed to perform fine. Would easily rev to 10k. Laps 3+ performance got progressively worse. Got a total of 7 laps in Sat.
- Although it did not appear to turn over more than a millimeter, eventually the engine "released" and I could crank it over with the starter.
- Pulled starter and it spins freely. So far this peculiar seizing problem has not returned.
- Once going, during practice engine performance deteriorated gradually to the point it would only pull about 5k rpm.
- Removed ball valve from vortex gas cap, which helped for about 2 laps. Added new plugs and checked fuel lines.
- Checked all electrical connections and cleaned petcock valve.
Looking for solutions on where to start troubleshooting next.
Thanks in advance for any suggestions you might offer.
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