Strange Revs

[TVRPierre]

Hi
Recently I have noticed that if I am accelerating and change gear with the revs at say 2000 - 2500, when I take my foot off the accelerator, the revs just drop to about 1800, hover ther for about a second and then very slowly drop to normal tickover. However if I have the revs above 2500 and change gear the revs will drop instantly to 1000. This is causing me grief with getting smooth gear changing.

Any ideas about the revs as opposed to my shocking gear changing?

Cheers Pete

[chrispitman]

Would be worth checking that the butterfly goes back on the throttle.

[Uncle Fester]

Throttle cable or it's springs.

[TVRPierre]

Thanks guys.

I have checked the throttle cable and springs and they are fine. I haven't checked the actual butterfly but if everything is going back externally, is it possible that the butterfly is not returning properly?

[Meatball]

Try lightly tapping the top of the plenum butterfly with the back of a screwdriver as it cured my problem - see earlier thread (biggeof`s idea )