Wont start first time... sometimes.

[Dean0o0o.]

Im having an issue with my 172 cup. The car doesnt start first time every time. Seems to not want to start first time when its been cold over night. The car will turn over 4 or so times then stop, turn the key a 2nd time and it starts fine.

Ive tested the alternator, battery & starter motor, all fine. New spark plugs fitted. I guess next port of call is the fuel filter or type of fuel + MAF sensor + TDC sensor. Anyone else had this issue? (Im not asking for someone to tell me clios dont like being cold!)

 

[Cristi_Xp]

change the TDC sensor first ,but if the car starts and dies, and won`t idle , then is not the TDC .
The clio doesn`t have a maf sensor , has only a map sensor ,but the map is not your problem

 

[Vicky.]

There are various threads about this and I have the same issue. I was told it was a lazy FPR, if you prime it twice (ignition on then turn it off then on and start ) then it'll start up nicely.

 

[craigy2703]

I get this if I use telco petrol I switched to sainsburys and has been fine if I put any tesco in it happens again

 

[Wick]

There are various threads about this and I have the same issue. I was told it was a lazy FPR, if you prime it twice (ignition on then turn it off then on and start ) then it'll start up nicely.

I have this exact problem. Couldn't put my finger on it but apparently lazy fuel pump is common cause! Prime as Vicky mentions above and see if it cures it?!

 

[sideways danny]

As above, it's the FPR, which is in the tank as part of the fuel pump assembly on ph2's

 

[Dean0o0o.]

As above, it's the FPR, which is in the tank as part of the fuel pump assembly on ph2's

How much am I looking at to sort this? Thats if you think its worth doing.

Cheers.

 

[sideways danny]

I wouldn't really bother, they all do it eventually to some degree

 

[Dean0o0o.]

Ok cool, would this affect the MPG aswell? I know I dont drive the most economically but currently at 29.7mpg. Some people on here talk of MPG in the 40s.

 

[aucky]

FPR.
Mine sometimes struggles after filling up too.

 

[sideways danny]

Ok cool, would this affect the MPG aswell? I know I dont drive the most economically but currently at 29.7mpg. Some people on here talk of MPG in the 40s.

nope, wont be mpg related. Got a feeling I advised on needing a Lambda sensor ages sgo

 

[Dean0o0o.]

nope, wont be mpg related. Got a feeling I advised on needing a Lambda sensor ages sgo

Yes you did advise this Danny, you also supplied and fitted a new lambda sensor for me....

 

[sideways danny]

so I did. well it may just be the way you're driving it, people who are getting upto 40 are really having to try

 

[Kane.]

Is this also on the non sports ? Mine seems to do this every now and then.

 

[Dean0o0o.]

There are various threads about this and I have the same issue. I was told it was a lazy FPR, if you prime it twice (ignition on then turn it off then on and start ) then it'll start up nicely.

Thanks for that vicky, starts every time now

 

[Cristi_Xp]

I have changed all the fuel pump and regulator assembly with a new one .The car starts exactly like before . I have a new TDC sensor , it did the same with the old one .http://www.youtube.com/watch?v=7IMmeiJfD-E&feature=player_embedded

 

[MicKPM]

You will need to delve a little deeper then Cristi and put a scope on the CPS Vs Injector and Coil primary triggers. Your problem could even be linked to a faulty CTS which is either enriching or leaning the cranking AFR hence getting a lazy start condition. Until you start playing its hard if not impossible to accurately diagnose these issues over the internet.

Mick

 

[Cristi_Xp]

I believe that the CTS sensor is making problems on all warm starts .I am having problems only with the first start of the day .If I put the ignition on and prime the fuel pump twice , the car starts fine , that`s why I was almost sure that the problem is fuel pump/regulator related . On cold start there is almost no difference between the temperature shown by the IAT and the CTS ,sometimes I get a 0.x difference between the 2 sensors.I also tried with a new coil and got the same results.
thanks for your help and I am open to more sugestions

 

[Correy]

Here is a quick check you can do, mine was exactly the same then it refused to start at all, if you have not tried already, perhaps replace your 3 relays in your fuse box, one is the fuel pump not about the other 2. They are £12 delivered next day to your door from RS, or you Coukd swap the ones you have already, however swapping them round made no difference when I tried it, it was not untill I replaced the lot the batmobile kicked straight onto life, first time , every time.

I too also checked the TDC sensor first

 

[Correy]

I can get you a part number

 

[Correy]

Worth replacing, for £10 from RS plus £5 postage ... ordered yesterday afternoon, arrived on door by DHL at 9:10 this morning.

3x RS Stock code: 535-2542 @ £2.80 each +vat
15A SPCO 12v relay

linky

http://uk.rs-online.com/web/

 

[Correy]

EvilGiraffe gave me all the above information and it was a life saver

 

[Correy]

http://www.cliosport.net/forum/showthread.php?428427-Car-won-t-start

Link to evilgirrafes thread when his wouldn't start first time, might be of help

 

[Cristi_Xp]

The fuel pump primes , but the strange thing is ,that the it primes only the second time I put the ignition ON without cranking it .

 

[Correy]

Oh sorry, that is strange, is it worth pulling the back seat up, pulling out the plug to the fuel pump, and measuring it with DC voltage meter, getting someone to turn on the ignition on and off a couple of times ? You should obviously read 12DC with the ignition on,

This way you can see if the fuel pump is getting a constant 12v dc, if it's not, Coukd be relay on way out of loose connection ?

 

[MicKPM]

As above, pull the back seat and check the pump is recieving power. It could be the pump itself is failing or it could be a simple lack of power due to the wiring or the fuel pump relay as suggested earlier. It's also worth noting that the main power feeds in the Clio II's engine bay fuse box have a habbit of breaking which causes a few issues and I've had to fix a few of these before now.

Mick