R33 Only Starts When Cold

[Treebeard]

Hey guys, any help here would be massively appreciated.

My R33 is playing scumbag skyline. It fires up fine in the morning when cold but if I need to stop and turn the car off, even for a very short time (e.g. getting fuel) it will kick over and die after a few seconds, then it wont even kick over till the engine cools all the way down again. The car has always run fairly rich and we were suspicious of the ECU being shagged.

So far we are thinking one of three parts, ECU, crank angle sensor or the coil packs.

Any help or suggestions would be much appreciated.

[Josh080691]

Take out the coil packs a d check them first. Ecu shagging itself is very unlikely

[Josh080691]

Also get some new plugs try bcpr6es-11 leave it at 1.1 gapping as it gets better spark. You coilpacks could simply be cracked or split so try these 2 first

[Josh080691]

Ask a friend if u can try there afm also

[blind_elk]

S1 or S2?

[Treebeard]

Thanks for replies and pm's

Have pulled off the line in to fuel rail after the filter, no fuel coming through.

Possibly regulator or fuel pump?

[Treebeard]

Ok, no power getting to fuel pump, pump works on battery alone but no power to wires leading to pump

[Treebeard]

After leaving it for a few weeks to fix a few things on my daily and helping a mate with his Starlet, it is fixed. It was a stupid fuse, not even blown fuse, just faulty.......somehow. Motor is running a lot smoother than before too, was probably causing issues for a while.