Wrong oil. Check the engine temp and thermo. Make sure oil is compatible with service. eg. your driving style and the weather. Castrol is pretty good oil. I used it in air cooled motocycle engine to solve shifting problem in hot weather. All lifters do not get the same cooling. That one is prob running a bit warm. good luck with that.
SOURCE: i have a 1988 mercedes benz 300c3 it has about
as far as the car reving up when its cold it is probaly a dirty IAC or Idle Air Control valve its only function is to control the idle if you can locate it it is on the intake right bye the butterfly and the throttle postion sensor. And as far as the slow take off it may be the cataletic converters they are exspensive to replace but if clogged up will make the car run like adogg at take off and kill fuel milage
SOURCE: While running engine runs hard. Also tapping or ticking sounds after installed new oil pump
If you have an adjustable valve train you may need to adjust the rocker arms. Remove the valve covers and look to see if there are adjusting nuts on top of them. If so, get a shop manual and a feeler gague and a couple of wrenches and screwdriver and follow instructions in manual carefully.
SOURCE: red /yellow cloured oil leak around behind front wheel line
if it is yellow it could be the aircon compressor, if it is really red to pink, power steering or automatic transmission leak
SOURCE: lifters making tapping noise. whats the cause???
1 of two things. They are hyd lifters so there is no adjustment to be done. So it is either a lack of oil pressure or an odd thing but does happen, a small piece of derbis will get into the pressure bleed hole, the oil is push out as the camshaft comes up to open the valve, the lifter will collapes and not re-pump up due to the hole being closed off. Im quite sure AMG rquires Mobil1 oil, sometimes extream temps either higher or lower will change viscosity requirements. you may need the 15W 50 to maintain enough pressure where you are at or it is possible the oil is broke down so bad that it is no longer able to maintain the correct amount of PSI. 1st things first. Put a mechanical oil pressure gauge on the motor, observe pressure after complete warm up. If it is too low go to the 15W 50 weight oil. If it is an oil pressure issue two things should happen. 1 the lifter making noise should be farthest from the pump. If not you should do a very carefull inspection check psi with mechanical gauge 1st if it's low, then you'll have to find the causeor cause. if psi is within spec you have a bad lifter IE: dirt or collapsed spring.
SOURCE: HAVING TROUBLE STARTING IN THE MORNINGS -SPLUTTERS
Check your fuel presser could be faulty fuel pump,
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