Problem starting 2JZGTE

[teamdrinkalot]

Lately when I start the engine, it runs on approx 4 cylinders, belts out lots of black smoke until I give it a couple of good revs then all is well. I have changed the plugs - still the same.

Another interesting thing is that if the engine does not fire 1st go, it takes a lot of cranking the second time to fire it, sometimes to the point of nearly flattening the battery.

[midnight_purple_GA70]

is it a standard 2jz with standard ecu and loom or aftermarket?

ide be checking
idle control valve
map sensor
crank and cam sensors...
in that order

when you say running on approx 4 cyl how are you determining this? low idle/almost stalling?

[mr1jz]

i would start by checking the injectors. the may be leaking residual pressure from their last cycle and in return making it run on four on startup due to being flooded.

[teamdrinkalot]

is it a standard 2jz with standard ecu and loom or aftermarket?

ide be checking
idle control valve
map sensor
crank and cam sensors...
in that order

when you say running on approx 4 cyl how are you determining this? low idle/almost stalling?

Yes it is all standard. And not running on all cylinders by the sound and the un-smoothness of the engine.

[Shifty]

Perhaps it's a BHG?

Seriously though it is overfuelling, check that your injectors are earthing correctly.

[manny]

I'd suspect the EFI ECU - our 1UZ used to behave in a similar manner until the ECU was changed.

[spagone]

check your coils... had a mates that wen the coils were cold the motor would only fire on five cyl till the motor warmed up than it was fine... just a thort...

[George]

Which errors are present? A lamp from W terminal to +12V with TC terminal grounded.

[spagone]

thanks guys all is sorted running fine so far
thanyou for all help
untill next time

[Draven]

what was the issue?

[spagone]

mainly just the pinout wiring
so many diagrams out there just had to get the right one but with the help of the other members input i got it all in the right spot now and is going fine
cheers

[teamdrinkalot]

All fixed after ECU change.