OIL PUMP WHINE REVISITED
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2005 e55 AMG
OIL PUMP WHINE REVISITED
Thought I would share some 'more' insight to our wonderful oil pump whine on the m113 engine. Decided that that would be a priority to find a possible culprit to this issue that so many have.
Pulled engine and trans out last weekend to do a quick freshen up and up date a few things, engine has 70,000 miles....installing ARP head studs,rod bolts,bearings,opening ring gaps yada yada. Engine was mint inside with only a few things causing small issues.
1 The oil pump chain hitting the front cover...gives a little 'tap tap tap' at idle do to the tensionor being weak and puts marks in the cover. Easy fix.
2 The oil pump intake o-ring was for sure getting hard. A few people talked on that subject a while back and where very concerned but there are really very few reports on failures.
3 After disecting the oil pump there is nothing to report...looks like new which is very dissapointing. Not that I want to see anything bad but....something !!
So I will throw a new pump in for the hell of it but don't have any hope for a 'very' quiet engine.These cars have been doing this for a long time and the oil itself plays a huge roll in noise.
Pulled engine and trans out last weekend to do a quick freshen up and up date a few things, engine has 70,000 miles....installing ARP head studs,rod bolts,bearings,opening ring gaps yada yada. Engine was mint inside with only a few things causing small issues.
1 The oil pump chain hitting the front cover...gives a little 'tap tap tap' at idle do to the tensionor being weak and puts marks in the cover. Easy fix.
2 The oil pump intake o-ring was for sure getting hard. A few people talked on that subject a while back and where very concerned but there are really very few reports on failures.
3 After disecting the oil pump there is nothing to report...looks like new which is very dissapointing. Not that I want to see anything bad but....something !!
So I will throw a new pump in for the hell of it but don't have any hope for a 'very' quiet engine.These cars have been doing this for a long time and the oil itself plays a huge roll in noise.
Last edited by SICAMG; Nov 29, 2018 at 08:57 AM.
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2005 e55 AMG
LOL Is it not the noisiest strongest built,most powerfull for it's time AMG engine you have ever heard ? When I first bought my car I thought to myself...this is a Mercedes ? My Crown Vic with 230,000 miles is far more quiet than this thing. LOL But that's how they are.
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From: Tampa Bay, FL
05 E55, 98 CLK320
Did you replace the spring for the oil chain? That's the biggest offender in my car, I found shavings and I can hear it... I don't have the means to pull the engine out at this time since I don't have a garage, but when I do it'll be for that...
Do you wrench for a living? Or is this just a hobby to you
Do you wrench for a living? Or is this just a hobby to you
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2005 e55 AMG
Yes all wearable parts. Timing chain ,rail's, oil pump chain and tensioner and oil pump.
I am a mechanic by trade.....transmission rebuilder, but this is a hobby. Love doing this stuff and going faster !!! LOL
I am a mechanic by trade.....transmission rebuilder, but this is a hobby. Love doing this stuff and going faster !!! LOL
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From: Tampa Bay, FL
05 E55, 98 CLK320
Add MOS2 or Ceratec, or any good additive and it goes away as well.
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From: Portland, Oregon
2019 Jeep Trackhawk, 2002 CLK55, 2014 911 Carrera
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2005 e55 AMG
I am curious if new tighter bearings will have any effect on noise as the pump pressure internally will be a little different.Will be a while before she is in and running do to some changes with exhaust and stuff. Spent the night stretching rod bolts and forgot how slooowww of a process it is......but well worth it.
BC928 no....same rings but gaped a little wider.Engine bores,rings and pistons are absolutely mint so not messing with it. I have to give a thanks to Tony at Race IQ for a perfect tune. piston tops and valves perfectly clean although it took me many tunes to get perfection. LOL.
Joe the Liqui Moly is close to the Bizol as far as noise. It's crazy how they just stopped making it and no one anywhere carries it !!
BC928 no....same rings but gaped a little wider.Engine bores,rings and pistons are absolutely mint so not messing with it. I have to give a thanks to Tony at Race IQ for a perfect tune. piston tops and valves perfectly clean although it took me many tunes to get perfection. LOL.
Joe the Liqui Moly is close to the Bizol as far as noise. It's crazy how they just stopped making it and no one anywhere carries it !!
Last edited by SICAMG; Nov 26, 2020 at 07:40 AM.
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2005 e55 AMG
Thought I would share some 'more' insight to our wonderful oil pump whine on the m113 engine. Decided that that would be a priority to find a possible culprit to this issue that so many have.
Pulled engine and trans out last weekend to do a quick freshen up and up date a few things, engine has 70,000 miles....installing ARP head studs,rod bolts,bearings,opening ring gaps yada yada. Engine was mint inside with only a few things causing small issues.
1 The oil pump chain hitting the front cover...gives a little 'tap tap tap' at idle do to the tensionor being weak and puts marks in the cover. Easy fix.
2 The oil pump intake o-ring was for sure getting hard. A few people talked on that subject a while back and where very concerned but there are really very few reports on failures.
3 After disecting the oil pump there is nothing to report...looks like new which is very dissapointing. Not that I want to see anything bad but....something !!
So I will throw a new pump in for the hell of it but don't have any hope for a 'very' quiet engine.These cars have been doing this for a long time and the oil itself plays a huge roll in noise.
Pulled engine and trans out last weekend to do a quick freshen up and up date a few things, engine has 70,000 miles....installing ARP head studs,rod bolts,bearings,opening ring gaps yada yada. Engine was mint inside with only a few things causing small issues.
1 The oil pump chain hitting the front cover...gives a little 'tap tap tap' at idle do to the tensionor being weak and puts marks in the cover. Easy fix.
2 The oil pump intake o-ring was for sure getting hard. A few people talked on that subject a while back and where very concerned but there are really very few reports on failures.
3 After disecting the oil pump there is nothing to report...looks like new which is very dissapointing. Not that I want to see anything bad but....something !!
So I will throw a new pump in for the hell of it but don't have any hope for a 'very' quiet engine.These cars have been doing this for a long time and the oil itself plays a huge roll in noise.
I've starting to investigate this ticking noise myself and have heard a few times now that it 'could be the oil pump chain relaxing and hitting the timing case' you're pretty much the first person I've heard outright say that it is an issue!
Could you provide some insight on the job? pics if you have em! i'm wondering if this can be fixed without taking the engine out of the car. I heard the hardest part is resealing the oil pan - can you comment on any of this?
I have the parts to install an oil pressure gauge, did you end up replacing your oil pump? did the noise/ oil pressure get any better?
https://www.weistec.com/oil-pump-set-m113k.html
Thanks! - Ryan
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2005 e55 AMG
Some one did do a fix with the engine in the car but it was a lot of work. I don't remember who did it.
My concern was the whine sound, not the ticking and yes a new pump installed and made no difference with the whine, oil pressure was the same as well.
The oil brand is what really made a huge difference for me.
My concern was the whine sound, not the ticking and yes a new pump installed and made no difference with the whine, oil pressure was the same as well.
The oil brand is what really made a huge difference for me.
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2005 e55 AMG
Some one did do a fix with the engine in the car but it was a lot of work. I don't remember who did it.
My concern was the whine sound, not the ticking and yes a new pump installed and made no difference with the whine, oil pressure was the same as well.
The oil brand is what really made a huge difference for me.
My concern was the whine sound, not the ticking and yes a new pump installed and made no difference with the whine, oil pressure was the same as well.
The oil brand is what really made a huge difference for me.
Im running Liqui Moli right now too, ticking drives me insane!
Is the whine from the oil pump or transmission fluid pump? I only hear it when I drive and no matter how long I let my car warm up and idle I still hear it when I start to drive but goes away after a minute.
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2005 e55 AMG
I can not diag your car from the internet but would guess it is the oil pump. You can get a mechanic to look at it for you and determine where the noise is coming from. Maybe a pulley ??
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Joined: Oct 2013
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From: Long Island
2005 E55 AMG, 1999 Lexus LS 400
the oil pump in the E/CLS 55 is a 2 stage pump which is the main reason for the noise, the S/SL/CL have a different oil pump design since they don't have oil pans which need to fit around the subframe
i've also noticed that it's noisiest right after an oil change if you put all 9 quarts in, but as a bit of oil slowly burns off (or leaks out lol) the pump starts to quiet down... the manual says the oil capacity is exactly 9.0 quarts, since not all of the oil drains when you do a change adding a full 9 quarts would theoretically mean there's now a bit too much oil, so now i put about 8.75 quarts in and it's pretty quiet for the most part
i've also noticed that it's noisiest right after an oil change if you put all 9 quarts in, but as a bit of oil slowly burns off (or leaks out lol) the pump starts to quiet down... the manual says the oil capacity is exactly 9.0 quarts, since not all of the oil drains when you do a change adding a full 9 quarts would theoretically mean there's now a bit too much oil, so now i put about 8.75 quarts in and it's pretty quiet for the most part
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2005 e55 AMG
I think it sucks....has no comparison to a supercharger whine or anything good for that matter......more like a bad power steering pump noise !! It is what it is. Thankfully I found an oil that shuts it up a lot so that's a blessing .
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From: SoCal
2006 E55, Various other German and ‘Murican
I slightly “Ported” the oil pump. Smoothed some of the casting transitions. I guess we will see if that makes a difference.
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2005 e55 AMG
Hey I ported mine as well ! Smoothed out all the transitions like you said and removed any casting flash. Make sure you turn the gears as you snug up the pump. The housing can bias the gears a little when not perfectly centered. At first I just tightened the bolts and noticed a very slight bind, then loosened them and snugged them up while rotating the main gear.
