Lumpy Idel and poor starting

[Dixie]

Hello all,

Just picked up the missus' Mk2 172. Car is great but sometimes doesn't want to start straight away. You need to cracnk it for longer than normal. Also it seem a little lumpy on tickover.

It idles arount 700rpm. Is this normal and if not is the idle speed adjustable?

Chees,

Matt.

 

[Topgun]

My 172 Cup has a poor idle just at start up. Its all to do with Emissions.. However if its continuos eg after its warmed id have it looked into.

 

[JACKO CUP 172!]

wot fuel do u run it on???????mine does this only when i put 95 fuel in.it goes like a bag of s**t put some 97 and above and it loves it and feels smoother and quicker????????????????????????

jacko

 

[RobertCL]

I think all 172's are lumpy on idle. Like jacko said, 97+ fuel (I use Optimax) makes it smoother and you get better mpg.

As for the starting I don't know. I've noticed I need to crank mine for longer if it hasn't been stopped for very long - i.e. when I go to fill it up and some days it starts easier than others, but I've never had any serious problems.

 

[thedoc]

Car is great but sometimes doesn't want to start straight away. You need to crank it for longer than normal. Also it seem a little lumpy on tickover.

Sounds normal to me, mine's done that for the last 2 years...
Optimax helps with the idle...
Common faults are the coil pack..

 

[sneeks]

The lumpy idle on startup is standard on my 172 too. Perfect after a minute or two.

 

[Minx172]

Hmm i too have a lumpy idle on my 172, even after warm up its still lumpy, i will try the different fuel in it next time tho i think, see how that goes..

Gem

 

[ant]

mine can be a b**ch to start if its been left for a short period like robertcl said. like nipping in the chippy or whatever.

 

[RobertCL]

^ yeah, it's like it gets flooded or something I recon.

I find I just have to remember to crank it for longer than usual otherwise it doesn't start and then I feel like a tit who can't even start his car properly !

 

[manicmonkey]

lol

 

[Munchkin]

I've had problems with this the last few days. I thought it was something to do with fitting a new battery but now I've read this I did put a tank of 95 ron in this week!

 

[photonbucket]

Mines lumpy too but Im going to try Optimax. Just in case; how much is a coil pack inc. fitting. (Roughly).