Hi, im new to passionford and wondered if any1 could answer this 4 me?
When cold my s2 starts perfect but once warmed up it'l just keep turning over, and if i leave it to cool down it'l start. Please help as its the 1 of the last jobs b4 i finally get it on the road! AND ive just spent 2k on a rebuild so its annoying me even more!! cheeRS.

 

Hi and welcome!

Sounds like you have similar issues to me, firstly check the engine coolant sensor yellow one under inlet manifold disconnect it and try and start, if it starts then coolant sensor is gone.

Also could be something simple like fuel pump relay these are known to go wrong once warm try another one, its the purple one under the dash (drivers footwell)

Cheers

 

CheeRS m8 il have a look at these soon as! Pics and spec coming soon, the company that have done the rebuild said if it doesnt see 260bhp on the rollers bring it back because somethings wrong! should be interesting!! Help very much appreciated!

 

also make sure your earths are good mate, mine was doing this till i fitted a good eartn cable direct from the battery to block and its been fine ever since.

good luck

 

Sounds like it's overfuelling to me, without knowing your spec/management it's hard to say any more.

 

Mine sounds exactly the same as this, found it to be i hadnt blocked the hole under the meatering unit because i upgraded my breather system!

 

your having the exact same problems that i had mines turned out to be a starter motor once it was realy hot it would stick and just keep turning over really annoying.
i got a new starter motor heat wraped it and the exaust and not had any bother ever since.

 

Rs turbos are prone for starter motors because of their location (under the turbo) the heat does cook them and can make life awkward.

 

When the engine is turning, it can't be the starter motor. I also don't think there's something wrong with the relay, this should cause problems when engine is warm AND cold.

Check engine temperature sensor first. If this is working correctly, you'll have to check the fuel pump itself. There's a valve on top of it which holds fuel pressure in the system.

When you turn your engine off, the fuel in the injection lines near to the engine get very hot, the fuel inside also. It's starting to build air bubbles inside so there's not enough pressure left to open the injectors...

 

More likely that the main injectors leak when the engine is off and so when cold it aids staring but when warm it floods it, common problem