idle problem

[philipll10]

I have an E200 1997 Estate and have had the cylinder head gasket changed since then it has a very bad idle problem where as it the engine bounces and the car has no power even with the throttle to the floor. can any one help?

 

[Ellsy Tanners]

You need to carry out the basic checks first.

Are the plug leads and coils correctly fitted to the right cylinder.
Is the cam timing correct etc.

Are all the vacuum conections correct on the inlet manifold?

 

[television]

As Ellsy,,I suspect the vacuum connections

http://www.detali.ru/cat/oem_mb2.as...GM=716.620&CT=F&cat=65S&SID=80&SGR=015&SGN=02

 

[philipll10]

all the leads were marked and put back where we took them from cams were also marked and lined up perfect when they were replaced.

 

[philipll10]

I have checked all the vacuum hoses and their all in their correct possition, engine rocks left to right when idling and smooths out when I increase the reves.

 

[television]

I would double check the valve timing to see if it is too far retarded.

The engine surging is always air leaks, at the end of the day it must be something not put back correctly, and hard for us to diagnose

 

[roofless]

is it like this from cold

 

[philipll10]

i will double check the vacuum hoses but 99% sure they were all put back coorrectly, I have also pulled the connectors off the injectors in turn and found the engine still runs with cylinder 2 and 3 disconnected so seems that its only running on two cylinders could it be the ignition module on the camshaft cover as there are two, one supplies cylinders 1 and 4 and the other supplies 2 and 3. Thats looking from front to the back of the engine?

 

[Ellsy Tanners]

Swap the coils over and see it switch,s the fault from 2-3 to 1-4.

Your fault is somewhere on the 2-3 ignition circuit. A Coil, lead, plug or plug cap must be at fault. Re-check make sure you have not accidently adjusted the plug gap.

 

[philipll10]

I have sorted the problem and found a broken connection on the primary curciut of the coil. Thanks to everyone for thier help, I have rarely found a site that offers so much help and people willing to give advice, thanks agian, very happy PHIL

 

[television]

I have sorted the problem and found a broken connection on the primary curciut of the coil. Thanks to everyone for thier help, I have rarely found a site that offers so much help and people willing to give advice, thanks agian, PHIL

Great news Phil, and thanks for posting back