4.8tt is toast
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Joined: Apr 2016
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From: Houston, TX
2017 S550 coupe, 2013 E550 coupe, 2008 Tahoe
4.8tt is toast
Sorry, 4.7tt is toast. In Houston here, 2013 E550 coupe is w/ Mike at Haven/MPH automotive, took car in for large smoke cloud coming out of right side tailpipe when coming off of a stop. He just told me due to a bad injector (failed open) cylinder 5 is washed. My choices come down to drive as is, replace motor, or sell the car. Car has around 43,000 miles. Very disheartening. Any thoughts?
Last edited by wheatswake; Aug 1, 2019 at 12:59 PM.
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From: Houston, TX
2017 S550 coupe, 2013 E550 coupe, 2008 Tahoe
Thanks for the reply’s, update so we can all keep up with potential issues with our vehicles. So took it to dealership and they said compression test came out good. They found an oil line going to right side turbo dumping excessive oil causing cloud of smoke out of right side pipe when leaving a stop. I don’t know to much about the turbo setup. I said fix it being happy I didn’t have to replace the motor. They also said spark plugs fouled. $1200. One issue they found but gonna fix in a month or so is a small oil leak from timing cover. They stated not much oil makes its way up to that cover so it will always be a small leak.
Last edited by wheatswake; Aug 5, 2019 at 08:48 AM.
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10-second E550
Thanks for the reply’s, update so we can all keep up with potential issues with our vehicles. So took it to dealership and they said compression test came out good. They found an oil line going to right side turbo dumping excessive oil causing cloud of smoke out of right side pipe when leaving a stop. I don’t know to much about the turbo setup. I said fix it being happy I didn’t have to replace the motor. They also said spark plugs fouled. $1200. One issue they found but gonna fix in a month or so is a small oil leak from timing cover. They stated not much oil makes its way up to that cover so it will always be a small leak.
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2006 CLS55 AMG Sold 2010 E550 Coupe totaled by mechanic, '13 SL550 I totaled it, 2017 SL63 current
That's a pretty bad diagnosis by MPH. Either they were looking to rip you off for $1000's or they misdiagnosed which is kind of hard to believe when they do so much work on MB's.
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From: Houston, TX
2017 S550 coupe, 2013 E550 coupe, 2008 Tahoe
I'm just updating per what I am told. Picking up the car today. Siegmann i think got it right with the turbo oil line seals. I am hoping the turbo oil line seals and o-ring takes care of the issue.
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Thread Starter
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From: Houston, TX
2017 S550 coupe, 2013 E550 coupe, 2008 Tahoe
i understand washing a cylinder as excessive fuel dumped into cylinder washes oil film away allowing piston rings to ride cylinder wall causing damage.
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This is correct. A compression test can confirm if the cylinder is "washed" as it won't reach the desired compression.
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From: Houston, TX
2017 S550 coupe, 2013 E550 coupe, 2008 Tahoe
Just picked car up and drove it back to work, it still has same smoke issue. Dealer asked me to put some more miles on it thinking it is residue burning off.
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10-second E550
If the smoke doesn't resolve, I'd suggest first checking your charge pipe on that side to see if it's coated with oil inside. If so, turbo may need to be rebuilt.
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From: Houston, TX
2017 S550 coupe, 2013 E550 coupe, 2008 Tahoe
Is the smoke 100% from one side of the exhaust only? I was thinking of a seal that when broken allows oil from the turbo CHRA into the compressor and then through the intake manifold and into the cylinders where it's burned. It can't just be excess oil getting to the turbo - it has to be getting past the seals into the engine or directly to the turbine to be burned and then come out the exhaust as smoke.
If the smoke doesn't resolve, I'd suggest first checking your charge pipe on that side to see if it's coated with oil inside. If so, turbo may need to be rebuilt.
If the smoke doesn't resolve, I'd suggest first checking your charge pipe on that side to see if it's coated with oil inside. If so, turbo may need to be rebuilt.
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From: Houston, TX
2017 S550 coupe, 2013 E550 coupe, 2008 Tahoe
Well here is where I’m at. First to clear up a few things I missed from my first post. I took the car into haven for the smoke issue. I was told an injector was bad so it was replaced. I picked up the car after hours and smoke issue was still present. I took the car back and was told cylinder #5 was washed from when the injector went bad. That’s when I took it to the dealership. They replaced plugs and right side turbo oil line seals and O-ring. I picked the car up and smoke issue was still present. Now I’m told all 4 injectors on the right side need replacement. It’s very expensive. I told the dealership about the replaced injector and they tell me #5 is on the left side. Then I look at injector replacement paperwork and it says #3.
I called Mercedes customer care and requested help with injector replacement cost. The dealership has been great so far and willing to help some with the bill. I waiting on a call back from Mercedes before I can move forward.
On a side note when I first took it into haven I also asked for a rear diff. fluid change. After I payed and picked it up the first time I noticed an oil change sticker. Then I looked at the paperwork and it shows an oil change. No diff. fluid change. I mentioned this to them a few times though the back and forth and was assured a rear diff. fluid change was done and that they have work orders that show it. I don’t feel like it was done. I did an oil change at 40k and now I think they did one at 44k.
I called Mercedes customer care and requested help with injector replacement cost. The dealership has been great so far and willing to help some with the bill. I waiting on a call back from Mercedes before I can move forward.
On a side note when I first took it into haven I also asked for a rear diff. fluid change. After I payed and picked it up the first time I noticed an oil change sticker. Then I looked at the paperwork and it shows an oil change. No diff. fluid change. I mentioned this to them a few times though the back and forth and was assured a rear diff. fluid change was done and that they have work orders that show it. I don’t feel like it was done. I did an oil change at 40k and now I think they did one at 44k.
Last edited by wheatswake; Aug 14, 2019 at 09:56 PM.
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On a side note when I first took it into haven I also asked for a rear diff. fluid change. After I payed and picked it up the first time I noticed an oil change sticker. Then I looked at the paperwork and it shows an oil change. No diff. fluid change. I mentioned this to them a few times though the back and forth and was assured a rear diff. fluid change was done and that they have work orders that show it. I don’t feel like it was done. I did an oil change at 40k and now I think they did one at 44k.
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From: Houston, TX
2017 S550 coupe, 2013 E550 coupe, 2008 Tahoe
UPDATE: Mercedes USA replaced the motor as a GOODWILL ASSISTANCE job. The dealership wants $3000 for labor, even though I already paid them $1400 on mis-diagnosed repairs to the old motor. Old motor is going back to Germany because they still do not know what is wrong.
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UPDATE: Mercedes USA replaced the motor as a GOODWILL ASSISTANCE job. The dealership wants $3000 for labor, even though I already paid them $1400 on mis-diagnosed repairs to the old motor. Old motor is going back to Germany because they still do not know what is wrong.
Sorry for your saga; thanks for the insights here.
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Joined: Apr 2016
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From: Houston, TX
2017 S550 coupe, 2013 E550 coupe, 2008 Tahoe
So when this started I had just paid the car off which put me in a spot. I didn’t want a E550 paperweight. How much would it be worth with a bad motor? So I had to agree to pay $3000 as my part for the new engine that comes w 3yr/36k warranty. Kinda seems like it’s for the previous labor and parts the dealership put in trying to fix old engine before the new engine was approved. However beggars can’t be choosers. I was figuring it would normally cost around 15-20k (ridiculous amount) to replace this motor which then it’s not worth it in a car that has a value of 25-30k. So total I spent on the issue is $5500 between Haven Automotive and the dealership. Love the car and plan on keeping it so call it a wash/win and move on.
