Ticking Engine Sound

[rob virgo]

hi ,

my daughter has an occasional ticking from her yaris,only happens sometimes.could it be hyd followers, oil level is good.

cheers

rob v

[motoxxx3]

hi ,

my daughter has an occasional ticking from her yaris,only happens sometimes.could it be hyd followers, oil level is good.

cheers

rob v

Iam certain all the Yaris petrol engines have manual valve adjustment not hydraulic. Might just need the valve clearances checking/adjusting.

[Madasafish]

Occasional ticking from which part of engine?

Could be a small exhaust leak at manifold (had that on other cars)

or

occasional low oil pressure

or blocked oil supply to cams... or one tappet - so it runs dry for a little while.

or

timing chain tensioner on its last legs.. and occasionally chain is catching and making a noise

or....

(Manual lifters)

[stebbo87]

Hi All

Had a similar problem on my 2007 Yaris petrol 1.0. For the last month there's been an intermittent ticking noise that speeded up and slowed down with engine revs. It would come and go without any seeming pattern. Tried changing the alternator - no change. Put in fresh oil - still no change.

Anyway, yesterday I discovered what it was. Driving back from Derby the water pump seized completely, and snapped the auxiliary belt. Have replaced both and the noise seems to have gone, so I guess it was the water pump on its way out.

Incidentally - the replacement pump I ordered is a bit more substantial than the one that went (although the fixings and pulley are identical). Maybe Toyota upgraded them in later models.

Hope this may be of help

Chris

[grin factor]

Where is the ticking noise coming from, engine, rear of car? Its a bit difficult really without hearing it "in the flesh" so to speak