[W126 Coupe] R129 500SL help

Satish Tummala mbcoupes@mbcoupes.com
Fri, 31 Dec 2004 08:23:01 -0500


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Well, it's probably incorrect plug wire positions on the distributor =
drive.  I assume this is a pre-1996 119 engine with dual distributors =
and coils correct?  I doubt compression is an issue.  Cam timing is =
relatively easy to check after pulling the valve covers.

I'm betting that it's the position of the plug wires on the =
distributors.  Check those carefully against a diagram.  Note that some =
wires from the right bank route over to the left distributor and =
vice-versa.  I'll bet this wasn't done.

  ----- Original Message -----=20
  From: Sulaiman Abbasi=20
  To: mbcoupes@mbcoupes.com=20
  Sent: Friday, December 31, 2004 1:00 AM
  Subject: [W126 Coupe] R129 500SL help


  I Have posted the message on the R129 list but since I am not a member =
of the R129 list I fear that my post will not get through. Those few who =
have transplanted the an M119 engine to their W126 SECs might be able to =
offer an insight.=20

  Anyway, the problem is that my mechanic is working on a R129 that =
needed a valve job. After he refitted the heads back, the car in =
question has no power at all. It starts and idles fine but has no power =
once on the go, if the accelerator is floored ---- no power. I will be =
visiting him next week to personally drive the car and see what could be =
the problem and to help him do a bit of trouble shooting.=20

  A few things already in my mind are to go over the cam timing, correct =
plug wire fixing and a compression test. Any other points that come to =
mind would be welcome

  Thanks in advance.

  Sulaiman
  '89 500SEC Euro  
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<DIV>Well, it's probably incorrect plug wire positions on the =
distributor=20
drive.&nbsp; I assume this is a pre-1996 119 engine with dual =
distributors and=20
coils correct?&nbsp; I doubt compression is an issue.&nbsp; Cam timing =
is=20
relatively easy to check after pulling the valve covers.</DIV>
<DIV>&nbsp;</DIV>
<DIV>I'm betting that it's the position of the plug wires on the=20
distributors.&nbsp; Check those carefully against a diagram.&nbsp; Note =
that=20
some wires from the right bank route over to the left distributor and=20
vice-versa.&nbsp; I'll bet this wasn't done.</DIV>
<DIV>&nbsp;</DIV>
<BLOCKQUOTE dir=3Dltr=20
style=3D"PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; =
BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
  <DIV style=3D"FONT: 10pt arial">----- Original Message ----- </DIV>
  <DIV=20
  style=3D"BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: =
black"><B>From:</B>=20
  <A title=3Dmohd_abbasi@hotmail.com=20
  href=3D"mailto:mohd_abbasi@hotmail.com">Sulaiman Abbasi</A> </DIV>
  <DIV style=3D"FONT: 10pt arial"><B>To:</B> <A =
title=3Dmbcoupes@mbcoupes.com=20
  href=3D"mailto:mbcoupes@mbcoupes.com">mbcoupes@mbcoupes.com</A> </DIV>
  <DIV style=3D"FONT: 10pt arial"><B>Sent:</B> Friday, December 31, 2004 =
1:00=20
  AM</DIV>
  <DIV style=3D"FONT: 10pt arial"><B>Subject:</B> [W126 Coupe] R129 =
500SL=20
  help</DIV>
  <DIV><BR></DIV>
  <DIV><FONT face=3DArial size=3D2>
  <DIV><FONT face=3DArial size=3D2>I Have posted the message on the R129 =
list but=20
  since I am not a member of the R129&nbsp;list I fear that my post will =
not get=20
  through. Those few who have transplanted the an M119 engine to their =
W126 SECs=20
  might be able to offer an insight.&nbsp;</FONT></DIV>
  <DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
  <DIV>Anyway, the problem is that my mechanic is working on a R129=20
  that&nbsp;needed a valve job. After&nbsp;he&nbsp;<FONT face=3DArial=20
  size=3D2>refitted the heads back, the car in question has no power at =
all. It=20
  starts and idles fine but has no power once on the go, if the =
accelerator is=20
  floored ---- no power. I will be visiting him next week to personally =
drive=20
  the car and see what could be the problem and to help him do a bit of =
trouble=20
  shooting. </FONT></DIV>
  <DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
  <DIV><FONT face=3DArial size=3D2>A few things already in my mind are =
to go over=20
  the cam timing, correct plug wire fixing and a compression test. Any =
other=20
  points that come to mind&nbsp;would be welcome</FONT></DIV>
  <DIV>&nbsp;</DIV>
  <DIV><FONT face=3DArial size=3D2>Thanks in&nbsp;advance.</FONT></DIV>
  <DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
  <DIV><FONT face=3DArial size=3D2>Sulaiman</FONT></DIV>
  <DIV><FONT face=3DArial size=3D2>'89</FONT>&nbsp;<FONT face=3DArial =
size=3D2>500SEC=20
  Euro</FONT>&nbsp;&nbsp;</DIV></FONT></DIV></BLOCKQUOTE></BODY></HTML>

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