Lifters making lots of noise 93 J30

[colincliff2]

I have noticed that my engine has been making a high speed knocking noise when it is cold. It can be heard both from the outside and inside the car. I popped the hood and the noise is coming from the valvetrain. I don't have a low oil pressure light and when I unscrew the oil cap there appears to be plenty of oil in the top of the engine. Any idea what is going on? Can the valves be adjusted? I have 119,000 miles, running Castrol 10W30 Dino oil.

Thanks!

[drape123]

I have noticed that my engine has been making a high speed knocking noise when it is cold. It can be heard both from the outside and inside the car. I popped the hood and the noise is coming from the valvetrain. I don't have a low oil pressure light and when I unscrew the oil cap there appears to be plenty of oil in the top of the engine. Any idea what is going on? Can the valves be adjusted? I have 119,000 miles, running Castrol 10W30 Dino oil.

Thanks!

a trick with the vg motors is to run heavier oil.

like 10w40. it seems to quiet the valve train down

[driverdriver]

Welcome to NICO!

Its quite possible that your Valve Timing Control Soleniods are done.

Its a fairly common age related failure.

[colincliff2]

Thank you for the replies. I will try running heavier oil. Where are the valve control solenoids? I wonder if I can change those myself...

[driverdriver]

The valve control solenoids are pretty labour intensive. You have to be comfortable with taking apart the engine and putting it back together.