S-Class (W126) 1979-1991: 300 SE, 300 SEL, 380 SE, 380 SEL, 420 SEL, 500 SEL, 560 SEL, 360 SEC, 500 SEC, 580 SEC, 300 SD TURBODIESEL, 300 SDL TURBO, 350 SD TURBO, 350 SDL TURBO

560 misfire and hesitation

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Old 03-25-2018, 05:24 PM
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w126 560sel 300se w140 cl500
560 misfire and hesitation

hello guy
well i have a problem with my 560 euro 1991 well the car has hard cold start well not that bad but it takes few times after it starts the misfire is really bad and if not left idling it would stall and when accelerating from a stop it will hesitate plus the misfire
few thing that i have changed with no results
fuel pump
spark plugs and wires
distributor
cleaned the injectors
replaced the Ignition Control Module because it failed
while checking the crank sensor i removed the bolts that hold it and left it but when the car started after replacing the Ignition Control Module the car started and i noticed that one of the bolt holes leaks compression and i dont know of its normal
the bolt leaked this bolt

the second this is this black thing on the fuel distributor i think EHA
when i plug it the engine will rev to 4k when unpluged it will red line

soo guys any one could help me
thANKS
Old 12-08-2018, 10:02 PM
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FCJ
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W126 500SE 1989 590000km
560 misfire and hesitation

Hi

Did you manage to fix your 560 yet?

What was the problem? EHA?

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