Mercedes 190e wont idle

modify1

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Hi everyone im a newbie to this site,so im hoping someone can help me
i have just tried to start my 190e(came in from shopping car was fine)
it backfired through the inlet manifold and refuses to start,after ive let it cool
down it starts but it wont idle,ive got to keep pressing my foot on and off the accelerator to get it to run then if i take my foot off it will not re-start at all while its hot,its baffling me,i have tried the following:
1.fuel pump change
2.crank position sensor
3.checked theres fuel coming out of the injectors
4.checked compression all perfect
Hope someone can help !
 

Smudge

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Sounds like you have a masive air leak in the inlet. Although you don't say which engine you have?
If it's the 2.6 with K jetronic check the big rubber section under mixer along with all the connectors and pipes
 

television

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2002 SL500, 216 CL500, all fully loaded
Sounds like you have a masive air leak in the inlet. Although you don't say which engine you have?
If it's the 2.6 with K jetronic check the big rubber section under mixer along with all the connectors and pipes

Its 2,3 with KE
 
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modify1

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Its a 1.8 litre engine,it starts from cold but you have to floor the throttle untill the revs gradually pick up,then you can just about keep it running by pressing on and off the accelerator pedal,ive had a look at the attached hoses but cant see any loose,also the metering unit plate that opens and lets more fuel flow to the injectors looks to be operating correctly,i have removed the air filter so can see this.
 
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modify1

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Hey presto ! after fiddling under the inlet manifold the hose has indeed come off after re-fitting it runs perfect,why didnt mercedes put a ****** jubilee clip on this to hold it on ?
the fit on the inlet manifold isnt the best by any means,also after putting the original crank position sensor back in it wont fire,i am assuming it went faulty and buggered the timing up,hence blowing the pipe off the inlet manifold.Many thanks for all the replies.
 

Smudge

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At least you can re fit it if it's come off. Held on with a jubilee clip and it may have split open when you had the backfire. From memory I think the usually are held on with a clamp, yours may be missing.
 
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television

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Hey presto ! after fiddling under the inlet manifold the hose has indeed come off after re-fitting it runs perfect,why didnt mercedes put a ****** jubilee clip on this to hold it on ?
the fit on the inlet manifold isnt the best by any means,also after putting the original crank position sensor back in it wont fire,i am assuming it went faulty and buggered the timing up,hence blowing the pipe off the inlet manifold.Many thanks for all the replies.

Great Easter news, if a car backfires or blows back it can blow the pipe off :D:D:D:D
 

meanie

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Onthe older cars the rubber gets a little harder,so a good idea is to put some silicon around it to help it hold a little better.
There is no clamp on this part.
 
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