[TR] TR3 Tick Tick Tick

[Karl Vacek]

This IS in top gear, right ?  If it only happens in one gear, OTHER THAN 
4th, it might be the transmission.  A missing tooth in a gear will cause a 
tick-tick-tick sound, but only when that gear is driving.

As long as your ticking is in 4th gear, it's not a gear in the transmission 
making the noise, but it could still be a main transmission bearing (though 
that would be unlikely to just cause a tick-tick-tick).  In top gear the 
gears in the transmission are just idling - the mainshaft is locked and the 
transmission is driving directly from input shaft to mainshaft.

Karl


>> If an exhaust manifold leak were the problem would this only
>> be noticeable under load?
>
> Not always, but they do show up that way sometimes.  A bit of load makes 
> the
> exhaust pulses much stronger, and so more likely to be noticed over other
> noises.
>
> I've also heard a loose spark plug described as "ticking under load" for 
> the
> same reason.
>
> Randall