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Old 01-15-2007, 03:34 AM
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Join Date: Jan 2007
Posts: 1
Help me please, 230E lost "power" gradually and will not start anymore (KE-Jet)

I have a problem with my MB230E-1988 (KE-Jetronic) and hopefully you experts take the time to help me a little bit here...

The car gradually got worse over a week then finally choking totally and now will not run at all, it is sometimes about to start but dies shortly after, giving a puff out of the intake...

Been spending some time fault-searching and it seems like I cannot get fuel out to the injectors. I have fuel pressure to the distributor, but if i disconnect one of the lines out to the nozzels there comes no fuel when I try to start the car, not even if I push the intake air measuring "flap" all the way down manually...

So some questions arise...

-Should there not be fuel coming out to these lines now ?
-I was told the EHA could be the culprit, but can a faulty EHA actually prevent the diaphragm from opening for fuel to the injectors ?
-What operating voltages is normal for the EHA, I read between 2v to 3v
-What else can prevent the fuel from reaching through the distributor to the injector lines ?
-Should I measure the fuel pressure, is there something to overcome in the distributor or should "any" pressure do to get the petrol through ?
(I know that the primary pressure should be around 5 bar to run properly, but is it necessary just to get the petrol through to the injectors?)

Do you have any suggestions on what to try next it will be most appreciated.

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Old 01-15-2007, 09:01 AM
page62's Avatar
Registered User
Join Date: Sep 2005
Location: Luckenbach, Texas
Posts: 436
Shot in the dark: Bad fuel pump.

(Let's see what others suggest.)
'01 SLK320, '79 450SL & '01 C320 -- What? 3 Mercedes? I am DEFINITELY crazy!!!
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Old 01-15-2007, 10:49 AM
david s poole
Join Date: Mar 2005
Location: dallas
Posts: 1,822
find the fuel pump relay[on the 123 body i think it's left side by the hood hinge in front of fuse box] pull the relay and join pins 87&30.strip insulation off wire pce and wrap in fig eight around pins and plug back in this will operate the fuel pump all the try your test of pushing down the plate at the fuel distributor and see if you can hear fuel thru injectors.if you can't i suggest that you check the fuel filter.

David S Poole
European Performance
Dallas, TX

"Fortune favors the prepared mind"
1987 Mercedes Benz 420SEL
1988 Mercedes Benz 300TE (With new evaporator)
2000 Mercedes Benz C280
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