S2 RS turbo a while back just started cutting out and popping and bangingm shes been off the road for 5 months and the same is happening.

Sometimes it will start, othertimes it will not start and will just bang, pop and shoot flames. When it does start its lumpy as foook!

I have changed headgasket, got new head, changed plugs and leads...

What could it be, im really getting the the end of my rope with her and im ready to just scrap it!

 

Also it will not cut out normally if im keeping revs to about 2k revs, some times if i leave off totally it will cut out..

 

is the firing order correct? is the valve timing correct, hard to diagnose online, start with the basic checks first

 

how much fuel is in the tank, shitty old fuel won't let it run properly.

 

Full tank, it started doing it after i first properly hoofed it in the car...

Does that give any ideas... also the ignition timing is correct....

Thanks for replies lads

 

air leak, perhaps,although this is rare lol

maybe get a compression check done

 

If it pops and bangs i'd recommend starting with the fuel system. When my alternator belt snapped the battery drained just before it died it was popping and banging and missfiring all over the place cos there was not enough fuel getting to the engine.

if it only happened when you started to boot it, there might have been some shit in the fuel system pulled through, try changing the filter and checking the injectors.

 

i had a problem like this, my plugs were knackered. new set fitted and sorted. I know you changed them so you can rule this out. my other suggestion is the dizzy is on its way out?

 

id check the vacume hoses, the rotor arm and check the little black clip in the side of the dizzy

 

i had a similar problem with mine,it was a shit up tank, i had to clean the tank out fuel lines and new filter,problem went.hope this helps.