Nissan Repair: Nissan Truck Timing Chain, fuel pressure regulator, nissan truck

Question
I have a 90 nissan pick-up with a 2.4 4 cylinder.  I have installed a timing chain. The truck will start fine when it is cool.  After driving it for awhile it will start to sputter like it is not getting enought fuel.  When I turn the motor off and try to restart it.  It is very hard to start.  It acts like it is flooding itself out.  But it does not do this everytime.  Sometimes it will start back fine and run fine.  I have had the front cover off again and checked the timing chain to make sure I didnt get it off a tooth.  It aligns perfectly with the silver marks on the chain and the dots on the gears.  I can set the timing with a light at 10 degrees btdc.  So I am pretty sure the distrubutor is in the right place. I did try advancing the distrubutor a tooth and it seemed to run better with the timing higher.  Probably at about 20 to 30 degress btdc. Is it possible that the cam needs to be advanced a tooth?  I have heard that aligning the timing chain by those marks is not fail proof.  Also if I did just try to advance the cam  a tooth is it enough to get a vale into a piston?  I would appreciate any thoughts you have on this.  I am sure it is something I have done because it ran fine before I put the chain in it.  Thank you For your time

Answer
Davey,

I would say the mechanical timing should be fine from what you have said.  If you advance it a tooth it will not cause interference.  I would be looking for a sensor like the cold start sensor since it runs fine when it is cold and then when it reaches temperature it does not.  Also, check the fuel pressure regulator to make sure that it is not blown.  This will make the truck run fine when cold, but when it gets warm it gets too much gas and runs bad.  Set the timing to factory sepcifications given on the hood sticker.