QuestionI have 2003 Land Rover Discovery with ticking noise only when engine warms up.
Only driver side of the engine makes noise therefore assuming from valve or similar.... Here is something I have done to locate the issue with no luck.
Opened valve cover and inspect each push road for wear or bent. No issue was noticed. One thing I have seen when opening the value is sludge, therefore cleaned the valve cover manually and flushed the engine with sludge removing agent. Then placed new oil and warmed the car the ticking noise appears again. I then replaced the oil with thicker oil with oil stabilizer, again similar issue when engine warms up.
Now I have opened the oil pan and the same driver side valve. From the oil pan, I did not see any issue, nor did I find metal in the oil pan.
Before I continue forward, I would love some direction if anyone has dealt with this issue before. I see a lot of comment online from different folks with different solution. I am looking for expert opinion. Thanks in advance.
I should say the truck has 118K mile and I am a new owner, with no history of maintenance..
AnswerThe noise could be in the valve train (rocker shafts, lifters, cam wear) It could come from worn piston skirts. It could come from slight play in small ends of rods. I have seen all those things. You may well have to do a complete teardown to find the answer. Sorry I can't be more specific but in my experience with 2003 trucks the noise will be in the pistons or rods and you are looking at a complete overhaul See my online articles on new liners and pistons for these motors.
