TR6_PI_1969 Posted March 23, 2021 Report Share Posted March 23, 2021 Hello everyone, While driving my 69 Pi today, I noticed that on throttle release, the rpms didn't go down as fast as usual. They do go down, no big issue, but much smoother than what I was used to... No issue otherwise, engine is fine from idle to high rpm range. Is it (eventually :)) a good health sign or is it some issue slowly growing up? In this latter case, what would be your usual suspects, things to check, in priority orders? From simple throttle cable to leaking injector or stuck butterfly, I am opened to everything :-) Best regards, take care! Quote Link to post Share on other sites
Mike C Posted March 23, 2021 Report Share Posted March 23, 2021 I'd start by checking that the throttle has a smooth movement to close. I had a linkage hitting a heater hose and sticking once. Quote Link to post Share on other sites
TR6_PI_1969 Posted March 23, 2021 Author Report Share Posted March 23, 2021 I will Mike, thanks for the tip :-) Quote Link to post Share on other sites
Kevo_6 Posted March 23, 2021 Report Share Posted March 23, 2021 Throttle linkage return spring broken or weakened maybe! Quote Link to post Share on other sites
ntc Posted March 23, 2021 Report Share Posted March 23, 2021 Pedal bushes and return spring Quote Link to post Share on other sites
John McCormack Posted March 23, 2021 Report Share Posted March 23, 2021 Return springs the likely culprit. Quote Link to post Share on other sites
TR6_PI_1969 Posted March 23, 2021 Author Report Share Posted March 23, 2021 1 hour ago, Kevo_6 said: Throttle linkage return spring broken or weakened maybe! Hi :-) I looked at it after my drive, not broken but weakened may be sth to control! Thanks :-) Quote Link to post Share on other sites
TR6_PI_1969 Posted March 23, 2021 Author Report Share Posted March 23, 2021 1 hour ago, ntc said: Pedal bushes and return spring Pedal bush check added to the list, thanks :-) Quote Link to post Share on other sites
TR6_PI_1969 Posted March 23, 2021 Author Report Share Posted March 23, 2021 1 hour ago, John McCormack said: Return springs the likely culprit. Looks like definitely John! Thanks :-) Quote Link to post Share on other sites
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