E-Class (W124) 1984-1995: E 260, E 300, E 320, E 420, E 500 (Includes CE, T, TD models)

Please HELP; 92 400e is Slower than My 1990 300e !!

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Old Apr 23, 2012 | 07:03 PM
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chance2benz's Avatar
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199o 300E, 1993 300E, 1994 E420, 1997 Range Rover 4.6
Please HELP; 92 400e is Slower than My 1990 300e !!

Just acquired a 1992 400e with Wald Body Kit from Hawaii . Car has appx. 90k miles and various interior mods. Engine wire harness IS the "Updated" Version. Car idles at a smooth 7000rpm and very recently passed Nevada smog with flying colors(passed in First 45 seconds of test)
However this 400e is actually SLOWER than myall stock 1990 300e (m103) off the line AND in passing mode on the highway. Car does NOT have ASR ; and on instrument cluster has a o2 light instead of a check engine light......."Why"??
So where do i start to reclaim my power/acceleration? I just changed Trans filter/gasket and Trans pan and filled with Redline Hi Temp ATF. I then changed engine oil and filter with Castrol GTX 20W50....
I bought this car for its legendary power But dont have it yet:
Please advise on where to start .....THANKS in advance for ALL input/Help/Suggestions....... Chance
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Old Apr 23, 2012 | 07:33 PM
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199o 300E, 1993 300E, 1994 E420, 1997 Range Rover 4.6
New 400e w/Wald Kit PIX

Just a couple of quick pix!!!!
Attached Thumbnails Please HELP; 92 400e is Slower than My 1990 300e !!-wald-1.jpg   Please HELP; 92 400e is Slower than My 1990 300e !!-wald-2.jpg   Please HELP; 92 400e is Slower than My 1990 300e !!-wald-3.jpg  
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Old Apr 23, 2012 | 11:41 PM
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Saijin_Naib's Avatar
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1990 300ce 24v I6
Hot car.

How are the standard stuff: Plugs, cap, rotor, wires?
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Old Apr 25, 2012 | 02:40 PM
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199o 300E, 1993 300E, 1994 E420, 1997 Range Rover 4.6
......New discovery/issue

well the accelerator cable is BRAND NEW and properly adjusted..
But today i removed the air filter box and air intake tubes; upon closer inspection- i notice that the Two (2) middle fuel injectors on passenger side of engine are drenched and wet along with surrounding area. All six (6) of the other injectors are Dry. Its obviously Fuel- Can it be the Cause of lack of Power AND Poor Gas Mileage?? How do i know if i just Need to replace 'O" rings on Injectors Or if I Need New/Rebuilt Injectors? THANKS for All Advise/Info......
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Old Apr 26, 2012 | 05:04 PM
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From: Dallas, Texas, USA
2004 SLK 230, 1992 300E & 400E
Put 2 cans of Seafoam in the gas. Replace ALL injector "O" rings. Also check diag. codes.
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