C 200 2005 m271 with noisy lifters when hot
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2007 w203 c180 m271 engine
C 200 2005 m271 with noisy lifters when hot
A warm hello to every one
Thank you foe accepting me as member and I'M
looking forward to share facts amd opinions on hopefully endless technical info.
I have owned a 2007 c180 for the last 5 years and have had my share of mechanical issues.
mostely with local help I could resove most, but at th moment I am stuck with a noisy lifter issue on aclients car.
The timi.g chain and sprockets have been replaced and cylinderhead overhauled.
it performs well and is a very smooth runner.
However, I would like to know the following.
what is the normal operating temp for the radiator fan to switch on ?
- at what speed should it operate?
As soon as the engine reaches 93 degrees celsius , the fan comes on but at a low speed.
AT this point the lifters starts to become.noisy and irregular idling starts.
When rpm is I.increased it goes away.
could this be an oil pressure issue or just warn valve lifters.
is the car overheating , or should it run cooler.
Acording to spec 90 degrees celsuis is the corrwct operating temp.
all measurements where taken by an OBD monitor.
I would appreciate any iny input .
thank you all in advance
Thank you foe accepting me as member and I'M
looking forward to share facts amd opinions on hopefully endless technical info.
I have owned a 2007 c180 for the last 5 years and have had my share of mechanical issues.
mostely with local help I could resove most, but at th moment I am stuck with a noisy lifter issue on aclients car.
The timi.g chain and sprockets have been replaced and cylinderhead overhauled.
it performs well and is a very smooth runner.
However, I would like to know the following.
what is the normal operating temp for the radiator fan to switch on ?
- at what speed should it operate?
As soon as the engine reaches 93 degrees celsius , the fan comes on but at a low speed.
AT this point the lifters starts to become.noisy and irregular idling starts.
When rpm is I.increased it goes away.
could this be an oil pressure issue or just warn valve lifters.
is the car overheating , or should it run cooler.
Acording to spec 90 degrees celsuis is the corrwct operating temp.
all measurements where taken by an OBD monitor.
I would appreciate any iny input .
thank you all in advance
Member
Joined: Jun 2013
Posts: 81
Likes: 5
1998 C280
We will assume your diagnosis of noisy lifters is correct.
93 degrees is close enough to reported 90 degree spec.
Check the oil viscosity. You don't note what the viscosity is and it could be that post-overhaul, too low viscosity oil is being used or that it has been underfilled. Reasoning is that when the engine warms, so will the oil, and despite the formulation of the oil to NOT lose viscosity, it may be doing so, just enough to allow the lifters not to pump up properly.
I've also seen threads addressing noisy lifters (use the search function) and what can be done about them, short of proper disassembly and cleaning. Generally, an oil additive (which I don't usually believe in myself) or a more detergent oil. There are also some who say to use a quart of kerosene or diesel oil. I watched my tenant use two quarts of something thin (diesel?) after an oil change on a near-new car, run for 10 minutes no-load, to "clean out" the engine. Use of Marvel Mystery Oil is also given great regard by some. Rislone is also mentioned.
93 degrees is close enough to reported 90 degree spec.
Check the oil viscosity. You don't note what the viscosity is and it could be that post-overhaul, too low viscosity oil is being used or that it has been underfilled. Reasoning is that when the engine warms, so will the oil, and despite the formulation of the oil to NOT lose viscosity, it may be doing so, just enough to allow the lifters not to pump up properly.
I've also seen threads addressing noisy lifters (use the search function) and what can be done about them, short of proper disassembly and cleaning. Generally, an oil additive (which I don't usually believe in myself) or a more detergent oil. There are also some who say to use a quart of kerosene or diesel oil. I watched my tenant use two quarts of something thin (diesel?) after an oil change on a near-new car, run for 10 minutes no-load, to "clean out" the engine. Use of Marvel Mystery Oil is also given great regard by some. Rislone is also mentioned.
Last edited by cgshawaii; Jan 14, 2020 at 01:55 PM.
Thread Starter
Newbie
Joined: Jan 2020
Posts: 2
Likes: 0
2007 w203 c180 m271 engine
We will assume your diagnosis of noisy lifters is correct.
93 degrees is close enough to reported 93 degree spec.
Check the oil viscosity. You don't note what the viscosity is and it could be that post-overhaul, too low viscosity oil is being used or that it has been underfilled. Reasoning is that when the engine warms, so will the oil, and despite the formulation of the oil to NOT lose viscosity, it may be doing so, just enough to allow the lifters not to pump up properly.
I've also seen threads addressing noisy lifters (use the search function) and what can be done about them, short of proper disassembly and cleaning. Generally, an oil additive (which I don't usually believe in myself) or a more detergent oil. There are also some who say to use a quart of kerosene or diesel oil. I watched my tenant use two quarts of something thin (diesel?) after an oil change on a near-new car, run for 10 minutes no-load, to "clean out" the engine. Use of Marvel Mystery Oil is also given great regard by some. Rislone is also mentioned.
93 degrees is close enough to reported 93 degree spec.
Check the oil viscosity. You don't note what the viscosity is and it could be that post-overhaul, too low viscosity oil is being used or that it has been underfilled. Reasoning is that when the engine warms, so will the oil, and despite the formulation of the oil to NOT lose viscosity, it may be doing so, just enough to allow the lifters not to pump up properly.
I've also seen threads addressing noisy lifters (use the search function) and what can be done about them, short of proper disassembly and cleaning. Generally, an oil additive (which I don't usually believe in myself) or a more detergent oil. There are also some who say to use a quart of kerosene or diesel oil. I watched my tenant use two quarts of something thin (diesel?) after an oil change on a near-new car, run for 10 minutes no-load, to "clean out" the engine. Use of Marvel Mystery Oil is also given great regard by some. Rislone is also mentioned.
Thank you for your input. Ive used a 20w 50 multigrade oil and it seems too have improved , but still noisy.
im about to replace the lifters.
will update asap.
