87 mercedes 300td, noticed it has become noisier than normal.
On starting blue smoke for a short time also present in the exhaust. Removed the valve cover saw hydraulic lifters so no adjustment. Added lucus injector cleaner hoping to clean out the injectors. Wondering if there is a pcv valve or some sort of clogged emissions part clogged causing oil to mix in the fuel and make it noisier and cause the smoke.
thanks for all the help. carmen