1992 Chevy Suburban problem

I have a 1992 chevy suburban that is not running right at all. It ran out of gas and after walking 3 miles to a gas station, i put a gallon of gas in it. It started up but ran very rough. It was only 5 miles to my house but took me over an hour to get there in the truck. I replaced to spark plugs (they smelled like gas) and it's doing the same thing. It's getting fuel because i can smell it in the exhaust. It will not stay running and when i press down on the gas pedal the RPMs drop. Only when i lift up on the pedal do the RPMs shoot up and then back down again. What should i be looking at here to make my truck run like it did before?

 

Check the fuel filter, may have sucked up some trash when it ran out of gas. Takes less pressure for the truck to idle than for it to rev up. Might also want to run some injector cleaner thru it.

 

Ok changed the Fuel Filter and it ran ok for about 10 mins. Didn't have full power but more than before. After 10 mins it ran just as rough as it did before. What's next? Fuel pump?

 

Check fuel pump pressure. with engine running it should be around 30 psi for throttle body injected engines. Also might want to pull fuel filter and pour fuel out from the inlet end onto a shop rag or paper towel to see if there is alot of trash in it. Looking for indication of rust in the fuel tank being pulled into the fuel line/filter.

 

hate to say this but you could also have plugged the sock on your in tank pickup. check to see if there is a inspection port in the floor of the suburban that will allow you to remove the pickup and pump for inspection. I also would cut the old filter open and inspect for debris in the filter element if replacing the filter helped the running I would suspect trash in fuel plugging the filters and possibly causing damage to the fuel pump.


life begins when the kids leave home and the dog dies

 

Go back to simple......

All you put into the truck was 1 gallon of fuel???????? In a 30 + gallon tank?.....Try adding a few more gallons of gas...

If not..running the pump dry can burn it up...