I have a bit of a problem and maybe some of you can give me an experience based advice.
I have a 2.2l Z22SE bertone coupe 2001 with 150.000 KM and here's what happened:
- i changed my oil (Castrol RS as usual). I change my oil frequently so I'm not abusing my engine as the oil is concerned.
- I used for the first time an engine flush that mentioned to leave it for 3 minutes and on cold engine. I went to the garage and the mechanic couldn't wait until my engine got cold so we put it in when it was hot and followed the procedure.
- I changed my spark plugs and the ones that OPEL gave me had a longer filament than the ones I had before which were NGK.
- I also noticed that the Crankshaft pulley is not spinning round but has a bit of an 8 in it.
I only noticed a clicking noise coming from the engine itself (not from the valve at the air box) only after I made about 100 KM on full power.
Also want to mention that my alternator is on its way to the junk yard because of the whine.
The clicking noise sounds just like tappets but there are only two alternating 'clicks' and they 'grow' with the revs but just until 2000 RPM(or at least i can't hear them after that).
No 'Check engine' light appeared nor the power changed and the oil is brand new and exactly the amount it should be.
Could the water pump be on its way or you think the new spark plugs may be the problem, the chain distribution or the crankshaft pulley ?
I tried recording the sound but no luck, I also have another exhaust and it is quite difficult to filter the clicks.
I appreciate your help!
(Really hope it's not related to the pistons or anything inside the engine!)