I engage the clutch and I can confirm it's
idling at high rpm.
Not exact matches
Also the problem is worse with a warm engine / transmission than when it is cold, presumably because
at higher temperatures it
idles at lower
rpm.
For example,
at the red light when
idling and without touching the gas pedal, the engine in some cases starts «hunting», oscillating between the usual minimum
rpm and an
higher value like I was giving rpetitive pushes to the pedal, or, more frequently, the engine start keeping a quite
high rpm (I estimate 2000 - 3000
rpm), VERY constant, before dropping back to normal.
This is strange, because even when your motor is
at idle, the
RPM of the rear pulley should be
high enough for a completely engaged clutch due to your odd CVT ratio.
Other than the rough
idle and hard starting there's no problem, the engine has plenty of power
at high rpms and doesn't seem to be misfiring, both of which I think it would have problems with if the fuel pump wasn't providing sufficient pressure or volume.
RPMs are somewhat
higher, depending on the bike (mine
idles at 1k, cruises
at 3k, and red - lines
at 10k), but compression ratios and operating temps are also typically a little lower.
With the engine running the voltage should be
higher — maybe not much
higher at idle, but if you bring the engine up to a normal cruise
RPM, say 2,000 or so, you should see something between 13.5 V to 14.5 V (a bit more or less isn't necessarily a problem).
The smaller clicking sound gets much louder as the
RPMs go
higher, and
at idle the car drops
RPMs to around 500 and shoots quickly back up to 1000.
During the next, the valve is closed, but only for milliseconds
at most (
at idle, less
at higher RPM).
If any problems associated with
rpm, hanging - up, rotaions
at a
high rate, you should check the
idle air control valve, throttle position sensor and clean the throttle body.
Engine super quiet
at idle and roars
at high rpm.
Smooth as silk
at idle and
at high speeds, the 3.5 - liter engine delivers abundant power throughout the
rpm range yet sips fuel like a frugal four - cylinder.
It peaks a substantial 153 lb - ft
higher than before,
at 501 lb - ft, but can be tapped some 4,600
rpm earlier
at 1,500
rpm — or just 700
rpm beyond the engine's nominal
idle.