Hydraulic valve lifters

Anyone know how to get rid of this annoying noise in idle, my car sounds like a diesel engine.

Volvo v40 GDI 1.8l Otto

Replacing the valves is they only proper way to get rid of the noise. I have a KA24E in my 240sx and it has hydro lifters too. Using a thicker oil or a friction modifier like Lucas Oil Stabilizer helps but it's like putting a band-aid on a compound fracture.

Originally posted by bicnarok

Volvo v40 GDI 1.8l Otto

I had a weird friend who would fight you if you said a bad word against Volvo, but I remember working on some of his stuff and didn't some older (80's) Volvo 4 cylinders have solid lifters and adjustable valves??

If this isn't your case, is their a high pressure oil pump available to boost pressure at idle?

Why would your valvetrain make noise with hydraulic lifters if it is lashed at zero unless the lifters bleed off quickly??

The engine was developed together with Mitsubishi and is also present in the Mitsubishi carisma.
Done a bit of surfing on the subject. Apparently the hole where the oil comes through in the engine is too big so the oil pressure isn´t sufficient in idle.

volvo replaced the valve lifters and the noise went away for a while, they said its normal with this engine, it doen´t sound normal.

If it is a solid tappet motor one of the problems is that oil companys have been taking zinc out of the oil because it decreases the life of catylitic converters,try adding Lucas Zinc break in oil might help quiet it down,I found out myself