Engine, Exhaust, Drivetrain, ECU
- Posts: 2
- Joined: Sun Aug 27, 2017 10:56 pm
Johny555 wrote: ↑
Mon Aug 28, 2017 1:53 pm
I thought maybe injectors ticking,,if I open bonnet I can't hear it,?
Interesting you mentioned injectors. I had a similar thought, maybe the hydraulic lifters, but on a car that's barely two years old, this shouldn't be an issue.
I did get the noise again yesterday, a loud high pitched ticking. It got me scared and I turned the engine off straight away. The noise didn’t return when I started it up again, so I couldn’t get a recording. I’m still on the hunt for it though
- Posts: 8
- Joined: Mon Aug 28, 2017 9:05 am
If it's when the engine is warmed up, could it be the radiator fan? I'm not sure about all cars, but I think the fan will kick on at about 92 degrees....maybe the fan kicks on and it's catching on something? No idea, a very bizarre issue, but you should definitely take it to an independent garage, get their unbias view.
Corsa E 1.4T
Limited Edition Spec
- Posts: 6
- Joined: Sun Sep 03, 2017 4:40 pm
Sounds like a hydraulic valve lifter to me. Back in the old times we had to adjust the valve clearances with a feeler gauge to the correct clearance, then they changed to automatic adjustment saving labour times and keeping the engine in tune. Inside the lifter is a small ball bearing being held on the seat with a very small spring. If the lifter drains slightly due to the ball coming away from it's seat it loses oil and the clearance increases causing the tap, just like we use to have but only one lifter out of 16 is faulty. We use to get all 8 valves out of adjustment so made a lot more noise not just a tap.
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