Alright im new to the forums and i recently picked up a 89 Firebird 5.0TBI. I have owned a handful of cars but not familiar with the TBI system. My problem is that My car will not start on it own. If i shoot a bit of starter fluid or put some gas in the tb it will start for a second or two then die right away unless i constantly feed it???

I just got the car like said so i dont know. I did take off the lines to the injectors and it seems as it shooting plenty of gas out but the intjectors only barely spray every second or two[Replaced injectors to see if that was the problem but no luck]. Any suggestions?

 

Guess not.

 

bump

 

Welcome to TGO

Check Fuel pressure
Fuel pump/in tank hose.

When you turn ignition key from off to run position (without engaging starter) you should be able to hear pump operating for about 2 seconds and then shutoff. SES light should be on, blink off and then turn solid until engine starts.

9 out of 10 cases of no start are due to a combination of bursted in tank fuel hose and or tired fuel pump. You may get plenty fuel flow from disconnected TB hose, but the fuel pressure is probably too low for injectors. TBI needs around 13 PSI for normal operation. If you have bursted hose you may get 3-4 PSI but that is not enough for injectors to operate normally. Check Fuel pressure!


//RF

 

any more help or suggestions?