1993 240sx starting problem, Help!

[plumcrazydd]

1993 240sx SE Coupe KA24DE - 5 Speed manual.

It, after sitting a while after running (Say, a couple of hours) It won't start all the way up. I will crank a little, but not all the way alive. Tried cranking it a bunch of times, and nothing. And as always, after 5minutes or so of trying it will just fire to life on one crank, and run perfect and strong.

NEW:
Starter
Filters and fluids
Clutch and resurfaced flywheel
Breaks all the way around
Tires
2 row radiator
Rebuilt head with Cometic 3 layer steel head gasket
All other gaskets and seals for almost everything else.
Fuel pump
Bunch more new stuff

OLD:
Stock MAF
Stock clutch fan
Alternator (Works just fine)

Help would be appreciated!
Thanks.

[blkvrtswp]

I would check the coolant temp sensor - reading cold when engine is actually hot can cause the ECU to pull too much timing and lead to difficult/no start.

Also if your injectors are leaking fuel past the o-rings, the cyls could be filling with fuel after shut off, flooded = no start. But after 5 mins sitting, the fuel leaks down past the rings into the oil, not flooded anymore = start. Check for gas smell in your oil - this is a sure fire way to spin a bearing BTW.

Good luck!

[plumcrazydd]

CTS is brand new. And knock sensor.

I am wondering about the injectors, that is kinda what I am thinking though. But this morning, it was like there was no spark at all. Has not started all day. Last night was running beautifully...