Had an opportunity to check this out last evening. The tick frequency does
not increase/decrease with either engine
RPM or road speed. It is coming from the front, not the rear. It is more
noticeable in 3rd and 4th than in 1st or 2nd gear.
That said, I checked some of the suggestions made:
Verified that plugs are wires were not loose.
Checked Fan belt. New last year and all seemed in order. Nothing noticeable
in engine bay.
Timing. First retarded 6 degrees with the vernier. Test drove, and believed
the tick to be less noticeable. Check that positon with the light, set the
vernier back to the 3rd line, using light set the dizzy to same point as
prior and then retarded at vernier another 2 degrees (all of this to allow
ability to retard a bit more with the vernier). It was getting late at that
point and I only made a short test drive. It seemed improved but will need
to test drive a bit more to confirm.
TIA
Ed
----- Original Message -----
From: <jimmuller@rcn.com>
To: <Triumphs@autox.team.net>
Sent: Tuesday, October 14, 2008 4:13 PM
Subject: Re: [TR] TR3 Tick Tick Tick
>> When applying additional throttle going up a hill the tick
>> is very evident... In my hill example, once the throttle
>> is decreased a bit the tick goes away.
>
> That's not quite what I meant by road speed vs. rpm. What you describe is
> that it is louder when the drivetrain is under accelerative stress (or
> non-existent when it isn't).
>
> What I meant can be checked only by shifting gears. Shift gears but keep
> the road speed more or less constant, but try to maintain however much
> acceleration is needed to make the noise show up. If the ticking
> frequency speed stays about the same after you shift while you try to keep
> the car moving about the same speed, then it is coming from the output
> shaft of the gearbox or the diff or the rear axles, tires, etc. If the
> ticking frequency changes noticeably, faster or slower according to what
> the engine did, then it is coming from the engine or the gearbox input
> shaft.
> --
> Jim Muller
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