advice please

[mole man]

my 172 seems very judery and lumpy and idles more when i first start her up, only in the morning any other time shes fine and runs fine iv had cambelt oil change and filter is it just a normal clio thing? or would you recomend changing fuel filter to? any advice would be great cheers

 

[George182]

It's completely normal.

 

[mark smith87]

Has the dephaser been replaced when the cambelt was changed? If its worn the idle will be lumpy when it's cold. They are all a little bit lumpy anyway until the engine is warmed up.

 

[lucky13]

Mine is awful when its cold and especially so in the mornings as of course that is when its at its coldest and hasnt been ran since the evening before. I have a hill to go up first thing and i seriously struggle to get the car up to a road safe speed! after about 1 minute it gets a lot better and then once its warm its perfectly fine! From what i have read its perfectly normal - a lot of cars are a little unsure at cold anyway but i think these are worst in the first minute or so as the lambda sensor doesnt become active until its up to temperature which takes around a minute i believe!

well its apparently down to the lambda sensor i should say, i have not looked this up but have read it before- someone correct me if thats wrong!

 

[MartinR]

Normal

 

[timmy2take]

Not so sure thats normal that hes struggling to get the car up to speed

 

[lucky13]

Not so sure thats normal that hes struggling to get the car up to speed

If i go down the hill or on a flat i dont really notice it half as much, car still feels very jerky though on the gear changes and throttle. If you start to give it a little it still struggles but obviously i never do that (only did it once or twice and only just past 4k rpm or so to see how it reacted)

This lasts literally less than a minute and the car almost switches on properly (guessing lambda if thats correct has become active)

From what i have read and others experiences this is pretty normal, think people get different severity of it but i think mine is still normal? It's annoying but 30 sec later its gone so i can live with it!

 

[Nexus Icon]

Gotta say, mine's never particularly refined on tickover, hot or cold, but then neither was my R26 and that was for 5 years from new.

 

[mole man]

Yeah it's fine other than in mornings and not particualy bad either It always calms down after about 2/3 minutes and always wait till idle drops before I drive it anyway, cheers for the advice though

 

[Advikaz]

I always run mine for atleast a minute or two until I venture out in it. To be honest echoing everyone elses points, mine is also sh1te on morning start up & sometimes kargaroo's as well although this is not as bad when I've let the engine run until the revs drop on first start up.