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C240 "coughing" when I stay at the stop light.

862 views 5 replies 4 participants last post by  AcesHigh 
#1 ·
Hi,

can anyone help me whit an answer. why my C240 almost stops when I push the brake. We just changed the spark plugs(without wires) , plus the fuel filter and air filter.After these changes the engine is worst. Please, can someone help me with and answer? Thank.

Coco
 
#2 ·
OK; this happens sometimes.
You just did a spark plug change, fuel filter change so RECHECK your work
Make sure your Fuel Filter is going in the CORRECT FLOW DIRECTION.
and it's not leaking gasoline.

Secondly; make sure you installed the correct spark plugs AND the Gap was
factory perfect.

Third; check to make sure the spark plug wires you installed correctly and
they are situated snugly. Di-electric grease on the Spark Plug tip and inside
the boot.


Just RETRACE your steps.
It's something you did.
Heck, I've been in your situation a hundred times over and over.
 
#4 ·
I'll give you an example.
Back, way back when, I did my first ever spark plug wire and spark plug change
I took everything off. I SWORE I knew exactly how it should be.
On my life I swore this.
Well, guess what? The car did not want to start. I was so angry :mad: I was
seething with anger. I was too embarrassed to ask another mechanic for help.
Finally my girlfriend said the wires were installed wrong, I screamed at her, her Daddy said the same thing. I told them all to go away and leave me alone.

Low and behold.
I installed the wire in the incorrect sequence.

Once I listened to someone else; it instantly started. :D

Good luck with finding your problem.
Let us know
 
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