SL55AMG

Author
Discussion

nick355gts

128 posts

207 months

Monday 8th June 2009
quotequote all
Interested in this also, as they seemingly offer the same as DMS, Remap and pulley change for £1300 inc and not £2800 plus VAT and they include the remap done in situ and on the dyno.. Are they not the renouned Jag specialist? what was / is the issue? They have told me they are waiting on a new pulley supplier or some supplier take over.

The work can be completed within 2-4 hours, so where is the cost with the £2k upwards prices, when mapping can be done from £250-500?

You chaps with DMS, would you say you recognise the increases? in what way? happy u paid the money?

Cheers

Nick

CycleSi

504 posts

195 months

Monday 8th June 2009
quotequote all
So far, l've been happy with their email replies - they seem professional enough.

You say "he wasn't impressed at all by what they said" but what about the actual standard and quality of their work?

Seeing as they are considerably cheaper than DMS, is it a case of you get what you pay for or that DMS are simply very expensive? Makes you think !!!

Who we really need is to hear from are SL55 AMG owners who have already used Paramount.

Mattt

16,661 posts

220 months

Tuesday 9th June 2009
quotequote all
It was regarding the mapping IIRC, they seemed to want to rely on the knock sensor.

carrera2s

Original Poster:

80 posts

182 months

Tuesday 9th June 2009
quotequote all
Hi all

Bad news today!

MB Tec are telling me that they have changed the charge coolpump.

But there is a major problem on cylinders 1 and 2 which they say have lower compression to 3,4,5,6,7and 8. They are telling me that bits have broken off the spark plugs in 1 and 2 and have scored the bore in no 2. So at the moment are removing all other spark plugs (total 16)and checking these.
There are telling me it might need a full engine rebuild cost approx £15000.

The car is a 2004 04 and had 21k on it when i purchased 9 months ago and only has 26k on it now!

Will no more later

Paul

mikial

1,913 posts

264 months

Tuesday 9th June 2009
quotequote all
carrera2s said:
Hi all

Bad news today!

MB Tec are telling me that they have changed the charge coolpump.

But there is a major problem on cylinders 1 and 2 which they say have lower compression to 3,4,5,6,7and 8. They are telling me that bits have broken off the spark plugs in 1 and 2 and have scored the bore in no 2. So at the moment are removing all other spark plugs (total 16)and checking these.
There are telling me it might need a full engine rebuild cost approx £15000.

The car is a 2004 04 and had 21k on it when i purchased 9 months ago and only has 26k on it now!

Will no more later

Paul
Regretful news indeed. Have the engineers given any indication of the cause of the spark plugs failure ?

I would suspect you are unwilling to disclose too much on this forum at this time .

carrera2s

Original Poster:

80 posts

182 months

Tuesday 9th June 2009
quotequote all
Just said spark plug had broken up and a piece fallen into cylinder!

Apparently this can happen?

CycleSi

504 posts

195 months

Tuesday 9th June 2009
quotequote all
Just so l'm clear - are you in any way blaming the remap for this or is it just coincidence?

Do you regret getting it DMS'ed now?

Possibly more to the point, l'm very sorry it's happened in the first place and l hope you get it sorted out quickly.


carrera2s

Original Poster:

80 posts

182 months

Tuesday 9th June 2009
quotequote all
Told by people i know very well and have been in the trade for a long time that it can happen at any time and even though tuned 2 weeks ago was a problem waiting to happen!
I only did 40 miles after it was dms`d.
Apparently the charge cool pump is a week point on this engine!!!

Will get it sorted one way or the other and will keep you posted!

Gouki

352 posts

186 months

Tuesday 9th June 2009
quotequote all
I'm sorry to hear your problem. I hope you can get the rebuild done cheaper than the £15k via a specialist.

phumy

5,678 posts

239 months

Wednesday 10th June 2009
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Just out of curiosity, when were the plugs last changed and how long is the life of the plugs, normally in this type of engine?

Gouki

352 posts

186 months

Wednesday 10th June 2009
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My car is a 2002/52 with 31K miles on it. I'm thinking of getting my Service B done early now....

markbe

1,755 posts

228 months

Wednesday 10th June 2009
quotequote all
carrera2s said:
Hi all

Bad news today!

MB Tec are telling me that they have changed the charge coolpump.

But there is a major problem on cylinders 1 and 2 which they say have lower compression to 3,4,5,6,7and 8. They are telling me that bits have broken off the spark plugs in 1 and 2 and have scored the bore in no 2. So at the moment are removing all other spark plugs (total 16)and checking these.
There are telling me it might need a full engine rebuild cost approx £15000.

The car is a 2004 04 and had 21k on it when i purchased 9 months ago and only has 26k on it now!

Will no more later

Paul
Hi Paul, I have never heard of a spark plug problem in any Merc,Or a spark plug
breaking up in any car!!!
From memory plugs are changed at 4years or 48k.
I would not let Merc boys do any repairs until you have had a second opinion.
I will speak to a few Merc contacts to see if I can glean any ideas.

Mark.

markbe

1,755 posts

228 months

Wednesday 10th June 2009
quotequote all
Hi Paul, when Merc gives you the readings for all 8 cylinders if you would ask them what the correct readings should be, and then email them all to me I
will get my Merc man to give a qualified unbiased opinion.

Mark.

ukdennis

167 posts

220 months

Friday 12th June 2009
quotequote all
Electrodes breaking off spark plugs are usually an indication that detonation has occurred ... this could be a direct result of too high charge air temps due to the cooler pump failure. I had this happen on a modified turbo car a few years ago.

CycleSi

504 posts

195 months

Monday 15th June 2009
quotequote all
l have decided to book mine in with Paramount Performance for a remap and filters this Wednesday.

lt should take the power to around 540 bhp but they do 'before' and 'after' rolling road runs so l'll let you know how it goes.

carrera2s

Original Poster:

80 posts

182 months

Monday 15th June 2009
quotequote all
Great news CycleSi keep us posted!

Got my car back and all ok after fitment of 16no new spark plugs full check over.

Charge cool pump changed seems to have been the problem!

marc.l

822 posts

227 months

Monday 15th June 2009
quotequote all
I`ve been looking at power up grades for my E55 w211, do Paramont do a full pully change and remap ? are they as good as DMS ?
How much differance dose it make in real world driving ?

kilarney

483 posts

225 months

Monday 15th June 2009
quotequote all
carrera2s said:
Great news CycleSi keep us posted!

Got my car back and all ok after fitment of 16no new spark plugs full check over.

Charge cool pump changed seems to have been the problem!
What happened to the scored cylinder and compression down , has the engine been rebuilt ?

mercedes tech

261 posts

218 months

Monday 15th June 2009
quotequote all
I diagnosed the problem,
There is still a very slight misfire on the engine, whether or not the customer notices this?? but i did and so does the star machine, customer informed of this. And having owned 2 55amg kompressor cars, both dms'd, and driven many more, i can say that it is not running to full power.

cylinder 1 and 2 were 50psi down on compression, explaining why not running on full power,

spark plugs had broken up, both electrode and ceramic on 1 and 2, upon inspection with boroscope cylinder 2 was quite noticably scored, cylinder 1 also but not as bad.

Upon removal of plugs it was noted that towards the front of engine, furthest away from fuel inlet, it had been running quite lean/hot, charge cooler issue? fuel pressure issue?, we did not go any further ie fuel pressure checks, as per customers request.

the spark plugs were overdue changing, age dependant not mileage.

The engine has not been rebuilt, the customer was happy with the way it was running after new plugs installed.


nick355gts

128 posts

207 months

Monday 15th June 2009
quotequote all
Very interested to see how you get on a Paramount as i have been speaking with them too. The do offer the pulley as well and claim the same sort of gains as DMS from what i can tell.. although backed up with the before and after will be test to this!.. Their Pulley supplier was going out of business or being bought but were hoping to have solved the problem quickly.. Do keep us posted!

Nick