gsr head..ls block..drag 3 kit. on a 95 gsr sedan.everything connected xcept for knock sensor..ls block was running when i took the head off to put the gsr on...engine rotates but will not start..it sounds like it wants to start though..well it fires up a lil then cuts off..car sat for about a week...has about an 1/8th of a tank of gas..it has spark..compression was about 1-160..2-170..3-170..4-170..also my fuel pressure is at 29..thats when it wanst to read ..i hear the fuel pump turning on when i turn the engine on but sometimes the gauge would make a reading and sometimes no..new autometer gauge hooked to than aem rail.any ideas anyone??


[Modified by 1sick4door, 7:12 AM 1/15/2003]

 

My best guess is that somethings wrong with the fuel pressure setup... when i fist started my engine, my fuel pressure was WAY low.. so it kinda did what your saying...it kinda wanted to start but just wouldn't , or I could get it to start running but then it would wanna kill.

When i installed a FPR it ran ten times better, but i didn't have a guage like you to see what i was running , i just did it by a trial and error thing. I would increase the pressure and see if there was a difference. Untill I got too high and then my car wouldn't start at all.

It wouldn't start untill i lowered my pressure. So i mean you've got compression, your got spark , youve got fuel ( maybe you should dump a little bit more in the tank, i don't know ) and your getting AIR flow in there right? Or it somehow the engine suffocating?

Looks like you've got everything......Youve got an ecu pluged in right?

I dont'know , check over fuel and airflow.. that's all i can suggest.

 

thanx fotr the reply..i got the car running ..i changed sprak plugs guess it was sparking enough...but after about 5 minutes of idling the car over heated...and doesnt even want to rev anymore...im thinkin and hoping its only a headgasket or just not anyworsted then that...what are some symptoms of a bad headgasket??

 

your car could have overheated because of unproperly bleeding of the cooling system. check that first. if your headgasget is leaking, check to see if there is oil in your coolant.

 

k thanx