GL63 compression issue - MBWorld.org Forums

Feb 10, 2016 | 04:25 PM

sraza

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MBs

GL63 compression issue

Hi all..
havent posted in a while but have been uptodate with everyones posts..
recently got a 14' GL63 CPO from an out of state dealer
within 2 days of driving had CEL come on
long story short- found to have low compression on cylinder 5-- underwent a very long electric and mechanical compression test
my master tech at local MB dealership- awesome- known him a decade.. has opened issue with tech assistance and feels cylinder head or engine may need to be changed
thoughts or suggestions or repair?

MB corporate already involved- i have asked for this to be escalated higher and that the dealer who sold it - replaces it with another one
cant justify fixing a car to this extent with such short ownership..

all thoughts and ideas welcome
thanks

Feb 11, 2016 | 08:09 AM

cyclrder

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Joined: Feb 2007

Posts: 947

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From: NYC

18 E63s Wagon 15 GL63 (sold), 10 Turbo TT MT, A36 Bonanza, 20 JLU Rubicon

I think that you walk in and give them the keys and say that you want your money back.

Feb 11, 2016 | 08:11 AM

sraza

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Joined: Mar 2011

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MBs

I agree
thats what I have told them
only issue is that the dealership that sold it is in CA and I'm in the midwest
I told corp that Dealership took advantage of throwing a CPO cert on a car that they knew had issues..
lets see what happens today

Feb 11, 2016 | 06:01 PM

sraza

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Joined: Mar 2011

Posts: 478

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MBs

word so far - either MB USA or MB dealership who sold it - is to buy it back

Feb 13, 2016 | 11:14 PM

cyberorth

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Joined: Nov 2008

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From: SoCal

2018 AMG GTR, 2017 GLS63, 2019 C63s

Hope this works out for you. Very interesting issue to have an engine swap which I am sure would be easy to confirm and would have to be justified by the dealer that did it.
Keep us posted.

Feb 14, 2016 | 07:35 AM

sraza

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MBs

as of now thats what their saying, tech assistance and field inspector want head taken out to investigate more-- I told em thats all fine but not on my time and money.. the dealer who sold it can get whatever inspection they want--
I'm done with this car - need to get a refund and I need another car as soon as this is done..
the corporate manager agrees with that - of course now the weekend has cost more time, but lets see what they have worked out on monday.

Now confused as what to - do I get another CPO or have them get a GLS63 - provided they have one coming off vance thats not preordered..

Feb 24, 2016 | 08:19 PM

j2nh

Junior Member

Joined: Nov 2002

Posts: 63

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GL63 AMG

Check my thread on the Check Engine Light below.

Curious that mine was the #5 Cylinder as well.

I've put on some miles since the engine repair was done and not had a single problem.

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Feb 24, 2016 | 08:44 PM

sraza

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Joined: Mar 2011

Posts: 478

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MBs

yea my master tech and shop foreman said that its apparently known in the tech world; and yea its always cyl 5; they dont know why its always that same cylinder- maybe cuz its early in the firing sequence (1 and then 5)
i did read about your car as well and happy its running fine..
I think my guy at MB here was also was notifiied about your issue and thats how they concluded the cylinder head/valve seat must be the issue and hence repair being very extensive..
but since this happened to me literally a couple days after getting the car- MB has bought it back- confirmed earlier this week.
oddly enough i have had the exact same engine on another AMG but never once had any issues at all..

possibilites for the damage could be as simple as bad gas or obviously a major tech issue-
I didnt wanna deal with fixing it as this one was cpo and was probably driven this way for a while and I asked them how much downstream damage are they willing to investigate amd change - O2s, cats etc etc -- at that point wasnt worth it and they bought it back..

now waiting to see what they find for me.. as now I need another one..