Join Date: Apr 2008
Location: north east, Buffalo NY area
If you fuel flow is reasonable, even if not up to full specification, I would suspect the TPS. They are known to cause low rpm throttle response issues. Normally a partially plugged up fuel pump manifests itself at elevated rpms, like 5k or 6 k because the engine is starved for fuel whereas everything is "normal" alt lower engine load. My bike ran fine but pushing it up a mountain road it would not accelerate past 6k. Fuel flow was about 1/3 of specification.
Please confirm: The bike ran normal after the valve check and plug change? Approximately how many miles since that work was done?
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Blau1 2004 DL650-sold
Blau2 2014 DL1000A
Last edited by blaustrom; 04-07-2019 at 04:48 PM.