I'd say at WOT your fuel air mixture is too rich, whereas when you back off the throttle the mixture improves (less fuel). Have you pulled the spark plugs, they sometimes tell the story. Are you able to adjust the mixture on your fuel distributor? The later KE ones have a plug to stop tampering (govt regs), whereas the K jet ones have a adjustment screw which takes a Allen key. Make sure that the Allen key is a good fit. Adjusting the mixture without a CO meter is an art form and not something that should be done without some knowledge of the procedure (read that as a disclaimer). To do this properly you should check your fuel pressures before turning the mixture screw. No good trying to compensate for a system running the wrong pressures. I STRONGLY ADVISE YOU TO LEARN MORE ABOUT K-JETRONIC SYSTEMS BEFORE ATTEMPTING TO ADJUST ANYTHING, YOU HAVE TO KNOW WHAT YOU ARE TRYING TO DO BEFORE YOU DO IT. Especially if you are doing this without the proper diagnostic equipment.

Hendrik

----- Original Message ----- From: "Kaleb C. Striplin" <[EMAIL PROTECTED]>
To: "Mercedes mailing list" <[EMAIL PROTECTED]>
Sent: Monday, January 09, 2006 9:44 AM
Subject: [MBZ] 5.0 euro, replaced the fuel filter, warp drive back up sort of


Well I replaced the fuel filter on the 85 380 with the 5.0 euro, didnt
seem to make a different.  I unhooked the exhaust at the manifold and it
didnt seem to make a different.  Hooked the exhaust back up and now it
seems fine.  Took it for a spin, doenst seem to have quite as much power
as before, almost like a US 5.0.  Anyways, what I did notice is that
full pedal down, economy guage all the way in the red, x amount of
power.  IF you let up off the pedal slightly, economy guage moves
slighly off full red and you have more power.  Can tell a definate
difference.  What does this indicate?
--
Kaleb C. Striplin/Claremore, OK
 89 560SEL, 87 300SDL, 85 380SE, 85 300D,
 84 250 LWB, 83 300TD, 81 300TD, 81 240D, 81 240D,
 76 450SEL, 76 240D, 76 300D, 74 240D, 69 250
http://www.striplin.net

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