Rebuilt engine - Unsure about compression readings

Zur Technik, Werksausstattung

Moderator: Moderator

Rebuilt engine - Unsure about compression readings

Beitragvon London-16V » 6. Mai 2018, 19:27

Hello friends,

I had my engine rebuilt by a specialist in Germany and my compression readings are:

1 = 11.4 bar
3 = 11.4 bar
4 = 11.3 bar
2 = 11.4 bar

What do you guys think? This seems a bit low?
London-16V
80 Ventiler
80 Ventiler
 
Beiträge: 88
Registriert: 22. Nov 2007, 00:33

Re: Rebuilt engine - Unsure about compression readings

Beitragvon Nagilum » 6. Mai 2018, 21:10

I do have values of 12 - 14 bar in mind, but someone else might give more exact values.

Also: You should tell the temperature the engine had. IIRC CR varies between cold and warm engine.

Regards
- Christof
Bild

"Verbreitet ist die Bezeichnung Freund, doch selten ist die Treue."
- Phaedrus, Fabeln
Nagilum
hyper-ventilator
hyper-ventilator
 
Beiträge: 4933
Registriert: 12. Sep 2006, 02:48
Wohnort: Bocholt
Autos: 190E 2.5-16 fast Original... ;)

Re: Rebuilt engine - Unsure about compression readings

Beitragvon London-16V » 6. Mai 2018, 22:37

Readings were taken on a very hot engine. But fuel pump relay was not removed, only lead to ignition coil.

Will this make a big difference?
London-16V
80 Ventiler
80 Ventiler
 
Beiträge: 88
Registriert: 22. Nov 2007, 00:33

Re: Rebuilt engine - Unsure about compression readings

Beitragvon phil » 7. Mai 2018, 14:00

Did you press the clutch an throttle pedals?
phil
 
Beiträge: 18
Registriert: 5. Mai 2016, 17:56
Autos: W201 2.0 '86 & 2.3 Sportline '92, S124 280TE '92

Re: Rebuilt engine - Unsure about compression readings

Beitragvon London-16V » 7. Mai 2018, 20:54

Yes wide open throttle
London-16V
80 Ventiler
80 Ventiler
 
Beiträge: 88
Registriert: 22. Nov 2007, 00:33

Re: Rebuilt engine - Unsure about compression readings

Beitragvon Franz Pickel 2006 » 9. Mai 2018, 21:05

Hello,
What have you ?
ECE
Ruf
Kat?
Franz Pickel 2006
40 Ventiler
40 Ventiler
 
Beiträge: 73
Registriert: 19. Okt 2015, 22:32
Autos: 190e 2,3 16v ECE ,2,3 16v ECE Autocross Projekt
280CE W114
300D W123

Re: Rebuilt engine - Unsure about compression readings

Beitragvon London-16V » 11. Mai 2018, 20:03

1990 ECE! No Kat
London-16V
80 Ventiler
80 Ventiler
 
Beiträge: 88
Registriert: 22. Nov 2007, 00:33

Re: Rebuilt engine - Unsure about compression readings

Beitragvon Steffen102992 » 14. Mai 2018, 01:10

Zitat von Henger aus längst vergangener Zeit : :winken:

"Verdichtungsverhältnis 2,3-16v ECE.....10,5= 14-16 bar Neuwert.....Grenzwert ca. 12,5 bar.

Verdichtungsverhältnis 2,3-16v RÜF und Kat...9,7=12-14 bar Neuwert...Grenzwert ca.10,5 bar.

Verdichtungsverhältnis 2,5-16v und EvoI ..9,7=12-14 bar Neuwert..Grenzwert ca.10,5 bar.

Verdichtungsverhältnis 2,5-16v EvoII..10,5= 14-16 bar Neuwert...Grenzwert ca.12,5 bar.

Zulässige Differenz zwischen den Zylindern max 1,5 bar :!: "
Zitat Ende (sorry krieg das zitieren auf dem Handy nicht gebacken :spinnen:"

So if you have a real ECE, you have a problem, or your compression tester is not working correctly.
Can you compare the measure with another one?
Mitglied im 190E-16V Club e.V.
Bild

Team-Moderation des w201-16v.de Forum
Bild

MfG, Steffen!

-190E 2,5-16 Bj.91 mit Evo2 Motor,EDK
-190E 2,3-16 RÜF Bj. 87
-190E 2,3-16 KAT Bj. 86
-124er Cabrio E34 AMG Bj.93 (Basis 300CE-24)
-S211 E220 T CDI Sportpaket Bj.08
Benutzeravatar
Steffen102992
Moderator
Moderator
 
Beiträge: 665
Bilder: 2
Registriert: 9. Sep 2005, 00:00
Wohnort: Raum Gießen /Wetzlar (Mittelhessen)
Autos: W201, A124, S211

Re: Rebuilt engine - Unsure about compression readings

Beitragvon London-16V » 14. Mai 2018, 09:14

Unfortunately i do not have another car to compare.

Im really disappointed in this because the engine was rebuilt by a specialist in Germany.

What can i do? Its like a never ending story
London-16V
80 Ventiler
80 Ventiler
 
Beiträge: 88
Registriert: 22. Nov 2007, 00:33

Re: Rebuilt engine - Unsure about compression readings

Beitragvon Steffen102992 » 14. Mai 2018, 12:59

I meant, check compression again with another tool.
Maybe the measurements are incorrect because of incorrect tool.
Mitglied im 190E-16V Club e.V.
Bild

Team-Moderation des w201-16v.de Forum
Bild

MfG, Steffen!

-190E 2,5-16 Bj.91 mit Evo2 Motor,EDK
-190E 2,3-16 RÜF Bj. 87
-190E 2,3-16 KAT Bj. 86
-124er Cabrio E34 AMG Bj.93 (Basis 300CE-24)
-S211 E220 T CDI Sportpaket Bj.08
Benutzeravatar
Steffen102992
Moderator
Moderator
 
Beiträge: 665
Bilder: 2
Registriert: 9. Sep 2005, 00:00
Wohnort: Raum Gießen /Wetzlar (Mittelhessen)
Autos: W201, A124, S211

Re: Rebuilt engine - Unsure about compression readings

Beitragvon Nagilum » 18. Mai 2018, 02:34

As all cylinders are very close/even on the numbers, It's not unlikely, that it's a problem with your tool.
If they'd be badly done, I'd expect a bigger spread between the cylinders. But listen to Steffen, to be sure...

Beside: Do you notice any problems with the engine? Low power or such?
Bild

"Verbreitet ist die Bezeichnung Freund, doch selten ist die Treue."
- Phaedrus, Fabeln
Nagilum
hyper-ventilator
hyper-ventilator
 
Beiträge: 4933
Registriert: 12. Sep 2006, 02:48
Wohnort: Bocholt
Autos: 190E 2.5-16 fast Original... ;)

Re: Rebuilt engine - Unsure about compression readings

Beitragvon London-16V » 20. Mai 2018, 22:38

Yes i feel low power.
I dont drive the car much. But the company that rebuilt the engine said i need to drive it more...In my opinion power in an engine is either there or its not.
London-16V
80 Ventiler
80 Ventiler
 
Beiträge: 88
Registriert: 22. Nov 2007, 00:33

Re: Rebuilt engine - Unsure about compression readings

Beitragvon London-16V » 14. Jun 2018, 15:27

Hello friends,

I found something very unusual...
It looks like someone installed the incorrect trimmer plugs in my car.

Here is the slam panel sticker and plug. You can see the plug is incorrect.

Bild
Bild

The EPC lists these as the correct trimmer plugs:

A0145457028

A0155452728

What effect does using the wrong trimmer plugs have? Anyone know?

:danke
London-16V
80 Ventiler
80 Ventiler
 
Beiträge: 88
Registriert: 22. Nov 2007, 00:33

Re: Rebuilt engine - Unsure about compression readings

Beitragvon Steffen102992 » 19. Jun 2018, 00:39

Yes, your trimmer plug is not correct, I only know those plugs, which you found in EPC.
The numberes were never replaced by another number.
But I don't know, which effect your installed plug causes.
You change the "Kennfeld" /software - Parameters of EZL/Ignition with them. For example if you are in a country with bad fuel quality.

But let me know if you found out, from which car or version your plug.is.
Mitglied im 190E-16V Club e.V.
Bild

Team-Moderation des w201-16v.de Forum
Bild

MfG, Steffen!

-190E 2,5-16 Bj.91 mit Evo2 Motor,EDK
-190E 2,3-16 RÜF Bj. 87
-190E 2,3-16 KAT Bj. 86
-124er Cabrio E34 AMG Bj.93 (Basis 300CE-24)
-S211 E220 T CDI Sportpaket Bj.08
Benutzeravatar
Steffen102992
Moderator
Moderator
 
Beiträge: 665
Bilder: 2
Registriert: 9. Sep 2005, 00:00
Wohnort: Raum Gießen /Wetzlar (Mittelhessen)
Autos: W201, A124, S211

Re: Rebuilt engine - Unsure about compression readings

Beitragvon London-16V » 19. Jun 2018, 18:06

Hi Steffen the EZL trimmer plug i have in my car is from a 190E 1.8!
Mercedes just told me this.
London-16V
80 Ventiler
80 Ventiler
 
Beiträge: 88
Registriert: 22. Nov 2007, 00:33


Zurück zu Technik Talk

Wer ist online?

Mitglieder in diesem Forum: Bing [Bot] und 1 Gast