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Engine management / Re: E30 318iS m42 engine tick
« on: January 05, 2017, 07:29:20 AM »
Hi Nicko, I am new to the forum just registered and actually here because of the same problem,, I have read alot and as far as I have researched. (I have copied pasted and edited from other pages I saved)
1. There are two noises. There's a tapping when cold which goes out after engine is warm. This is a sticky tappet or two. Sometimes changing to a thinner oil and/or giving the engine a good thrashing will help. Meaning you changed into a thick oil (like I did on mine)
2. The second noise is a general tapping/ticking noise that is obvious when the engine is hot. This is general wear in the cam, followers and tappets. Changing this lot will cure the noise and costly. The engine will continue to run for a long time with this noise. Eventually you find it won't pull to the red line, but even then it will still run.
3. I would add to the comments that there jcan be a 'ticking' that sounds like noisy tappets that can be attributed to worn/clogged injectors. If they are worn or clogged the ball bearing/pin inside can make this 'ticking' noise as well, this can usually be decided using a bottle of injector cleaner/lubricator, if the noise subsides after using it then the injectors could have been dirty and if it then returns it could be that they're on their way out.
This is what I researched I hope you get help... I am still researching before working on mine (M40 bdw). Goodluck
1. There are two noises. There's a tapping when cold which goes out after engine is warm. This is a sticky tappet or two. Sometimes changing to a thinner oil and/or giving the engine a good thrashing will help. Meaning you changed into a thick oil (like I did on mine)
2. The second noise is a general tapping/ticking noise that is obvious when the engine is hot. This is general wear in the cam, followers and tappets. Changing this lot will cure the noise and costly. The engine will continue to run for a long time with this noise. Eventually you find it won't pull to the red line, but even then it will still run.
3. I would add to the comments that there jcan be a 'ticking' that sounds like noisy tappets that can be attributed to worn/clogged injectors. If they are worn or clogged the ball bearing/pin inside can make this 'ticking' noise as well, this can usually be decided using a bottle of injector cleaner/lubricator, if the noise subsides after using it then the injectors could have been dirty and if it then returns it could be that they're on their way out.
This is what I researched I hope you get help... I am still researching before working on mine (M40 bdw). Goodluck