A "yik" sound.
Question : I NEED your opinion on
the following :
1. When I stop the engine, sometime there is a "yik" sound. Is this normal
for a fuel injection car ?
2. What is output of the Myvi's alternator ?
3. Is it normal for grease near the oil seal ? The mechanic told me there is
grease between the gearbox and engine, where the oil seal located. Is there any
problem or is it an early sign to detect the problem ?
4. Lately, I found there are dirty smudges on the metal parts inside after I
open the engine cap that use to top up oil. Any problems ?
5. When I drive on an uneven road I get a noise. This is very clear after
pump more tyre pressure eg 220kpa and above. Below 22okpa, the noise is less but
it seems the car steering is not so stable when I go over an uneven road eg it
will follow road grade/steep to the left. can it be bush or top mount problem ?
1. I cannot tell you what is the cause of the noise but from your description
it may be the air conditioning magnetic clutch disengaging when you turn of the
2. I believe it is 50A.
3. There is no crease used between the engine and the gearbox, especially on
the oil seal. How did your mechanic manage to see the grease between the engine
and gearbox without disassembling the components ? Or are you talking about the
drive shaft and the gearbox, where it is possible for traces of grease to be
seen if the drive shaft rubber boot is leaking and the grease is getting on the
oil seal. If this is the case, you need to check the boot and if it is damaged,
4. What do you mean by "dirty" ? It may be sludge and that is caused by water
condensation mixing with the oil to form the sludge. Normally it would not
appear if the car is used quite a lot but if you do not run the car a lot, this
sludge can appear as the engine is not getting ho enough to evaporate fully the
water condensation in the valve cover.
5. Of course, more air in the tyres will make them less compliant resulting
in more road nosie. the wandering problem could be caused by the road condition
that you are driving. Roads with more "crowning" tend to cause more wandering
tot he sides and this is not a problem with the suspension.
To check it out find a flat road with no "crowning" (ie the sides and the
center of the road are the same level) and when driving, see if the car still
wanders. If it does not, then there is no problem with the suspension.