no code on 90 burban

[Randy282828]

ok, im new to this forum stuff so bear with me if i couldnt find a similar problem. i got the truck 3 months ago. it had sat for 3 years with a bad tranny. but was well maintained prior. checked the oil, coolant etc, put in a battery, fired right up, on 3 year old fuel! rebuilt the tranny, drove great. put 10 gallons of fresh fuel in it( was almost empty), drove for 2 days, was doing about 35, started sputtering and bogging down. got it home, drained the tank, new filter and plugs, still bogs down. checked for a code cause the light came on for about 2 minutes the first time, not since. nothing. any suggestions as to what to check? its a 5.7 tbi

 

[Slapperbar]

Check the fuel pressure, it's probably the pump.

 

[Randy282828]

Check the fuel pressure, it's probably the pump.

will do, thx

 

[sledheadak]

also check the cap and rotor,they like to corrode badly and cause the spark to jump inside the cap.

 

[Randy282828]

hadnt thought of that one

 

[ARAMP1]

I'd be willing to bet that since it was sitting so long, there's a little varnish gumming up somewhere in the fuel system.