midnight_man

Hi,

I have problem with engine cold idle, now when temperature is about 3-4°C is very hard to start engine. Engine starts, idling for 2-3 secs and then go off.
When I tried to push thortle, engine immediately died...
I must do this 2-3 times, then I can push thortle and hold engine up to 2000 rpm for 20 seconds.

After this..engine is idling but idle is going up and down around. (From 600 to 1000 rpm cca).
The mystery is, that when I disconnected ISCV..notthing happened. Idle still going up and down. What can causing this? It is not ISCV.

When engine gets hot, idle will stabilize on cca 900rpm and stay.

Engine has standard components with L8 ECU. THanks.

ulash

i think low fuel pressure mate

midnight_man

but, when engine gets hot... there is no problem with the car. If there will be problem with the fuel pressure, engine will have no power or under full thortle you will feel jerking....

ulash

ok you tried on the road with boost ? or just start the car and push the throttle ? how is your fuel pump sounds like?

midnight_man

Yes I tried...everything looks like OK under thortle.

Car will not start if I will have pushed thortle only little bit. When I start engine and pusth thortle (only little bit) engine will died...

note: when idle running up and down, when idle is down (cca 600rpm) boost gauge is not sitting on -0,6 bar ....is rising up..
But on hot engine, there is -0,6...

I tried to disconnect ISCV on cold engine, no result....still same.