alright guys here is where im at and im stumped....me and another guy install my used motor in my truck got everything hooked up and it ran real rough. well the mechanic said it may have been sitting for a while maybe i should run it. so i did and had to be pulled back. but now it cranks and runs for about 20 secs and dies out. acts like its starving for gas or something. any suggestions. i used my intake so i know the injectors and fuel pump and stuff are good also put a new fuel filter on.



im stumped help please.....oh and this is a 94 22re automatic

 

There are so many things that could be wrong don't know where to start. Need more details about exactly what he did, how many miles on the motor, why was it replaced, etc.

 

the motor was replaced cause the other one had a rod bearing out in it and bad knock.......the new motor has right at 200k on it i know thats alot but it was in a 2 wheel drive truck and looked to very well kept up. also i couldn't afford the new route........i just don't know and getting frustrated i know its something simple just don't know where to start. also could the vacuum lines cause this. I think they are all hooked up right but who knows its a hornets nest on top of that valve cover

 

Could be crack in the intake causing unmetered air, could be vacuum lines, could be wires not hooked up right.

 

is there a way to test for leaks on this without tearing it all apart again

 

ok we started with the obvious and the fuel pump wasn't running so i jumped it in the diagnostics and it cut on. so my question is now the fuses are good so what else tell the pump to run?

 

did you check the fuel pump relay? kinda hard to check these though without making up some sort of wire jig, I usually just replace them if there is any doubt. If it's not it, at least you have a back up.

 

should the motor run while its jumped? cause even with it jump the motor won't start but the pump runs.....i thought maybe it shuts it off when you turn the key to start.... im stumped fixing to have to bring to a real mechanic. cause im gonna pull my hair out

 

where is the fuel pump relay located?

 

never mind i have worked on this truck for three days. the gas gauge reads half a tank but it was empty.........feel like a idiot i called and oiled on the boy that sold it to me....i told him that should have been the first thing you told me was that the gas gauge don't work.....called and apoligize later was just frustrated that i didn't start with the most simple first........man talk about coincidence runs out of fuel as soon as we install the new motor


i want to thank all you guys for your help

 

lol stuff like that happens, we won't hold it against you in the future. Well I won't anyway. haha. What made you double check the fuel level?

oh and I think that deserves both of these:

 

i don't know we traced down the fuel pump wires and found everything was in order then broke the line at the fuel filter and nothing came out while we were jumping in the digonistics box. so then i loosened the gas cap and it was a vacuum. then i got worried so i called and asked the boy if the gauge worked........then i went to cussing alot...lol