tickover

[lackofgrip]

my c180 seems lumpy on tickover from cold and sometimes stalls, once it has warmed up its fine no problems at all. any ideas? could it be plugs?

 

[lackofgrip]

also what type of mpgs should i be getting
a: town driving
b: motorway

 

[bibamus]

I would go for the plugs first, when I changed mine, it made a huge difference to the smoothness, but soon after I had to change the MAF, ( it comes to all of us!)
MPG is a tough one, it depends on your driving style, but, I reckon I get about 30 day to day driving ( I dont live in a town!) and mid 30`s on a motorway.
I drove down to ( and around ) South of France and Spain last year, over 2000 miles in 2 weeks, I averaged about 37mpg, 4 up with loads of luggage and a roofbox.
Allan
( 405 mi-16 eh? I drove a couple of those around for a few weeks a while ago, great cars!)

 

[lackofgrip]

if it was the maf wouldnt it do it all the time? is there a way to clean them and if so what should i use to do so?

 

[lackofgrip]

anyone else got any ideas its only when cold that it drives lumpy too.

 

[Hibbo]

Change your plugs my son.

 

[lackofgrip]

i wouldnt have thought the plugs would make a difference for cold start and when warm?

 

[Hibbo]

You need a stronger spark when the engine's cold.

 

[lackofgrip]

ah i see!!!!!!! that would explain it running rough for first 5 - 10 mins then?

 

[lackofgrip]

??????????????????

 

[eric242340]

Hi im from west yorkshire myself, now working on Mercedes in China. Start with the basics on this, there are three common causes. 1. Spark plugs, 2, MAF sensor, 3, Fuel regulator. 1 and 3 are easy to check and 2 is a last resort and better checked using Star Diagnostics ( as this part is a little more expensive). Personaly I would check the fuel regulator first, the reason, its the easiest to check. any further questions, please post them.

 

[lackofgrip]

well its going in for the service at my local garage next friday so will see what its like then.