Rb25 Wont Start When Cold

[beRwick_GTRage]

having trouble with my rb25neo. it wont start when its cold.

i have to remove the cas with the ignition on and turn it manually. guessing the manifold gets filled with fuel which helps it start.

once its warm it starts normally without a problem

the engines in an r32, ive wired the fuel pump directly to the battery with a relay running off the 12v ignition. dont know if that could effect it in anyway.

[blind_elk]

Which ECU?

Maybe a faulty (ECU) temp sender (ECU thinks the engine is warm). Maybe faulty cold start air correction valve.

[beRwick_GTRage]

Which ECU?

Maybe a faulty (ECU) temp sender (ECU thinks the engine is warm). Maybe faulty cold start air correction valve.

im running a stagea rb25neo auto ecu

temp sender? do you mean water temp sender? works fine on conzult.

what the cold air correction valve? cant find it on the diagram in the r34 workshop manual

could having the carbon canistor disconnected have any effect?

[beRwick_GTRage]

ok so the car starts after turning the crank angle sensor manually

if i turn the car of straight away then try restarting it it starts after a few cranks

so it doesn't matter whether the car is cold or hot.

seems like the car isnt getting enough fuel when i first try starting it

what could be the problem?

[greensa14]

Well it could be too much fuel or not enough. CAn you hear your fuel pump prime?

Leaky injector causing flodding issues? Faulty FPR?

My S14a is playing funny buggers on warm start up atm. Bad FPR i reckon.