before i drop my fuel tank

[berg76]

Having trouble with my motor running. Frustrating. I just got the transmission rebuilt and reinstalled. Fired it up topped off the tranny fluid and ran threw the gears. Then she idled for another minute or two then died. I though she was just out of gas. Put 5 gallons of fresh gas in and now it does this,

https://www.youtube.com/watch?v=gZ8wNBFPnoU&feature=youtube_gdata_player

She will start but die almost immediately. I've checked spark, plenty. Checked codes, had a 34 so i changed the MAP sensor. Checked fuel pump. I can hear it running. Cracked the line open at the filter and gas comes out (not sure how much is suppose to come out). I'm thinking i may have that problem with the cracked hose in the tank. Any other thoughts on what the problem might be before i drop the tank?

Thanks

1987 305. Tbi.

 

[metalneverdies]

Have you used a fuel pressure gauge? Just because it has fuel doesn't mean it is at the right pressures. I have had the little tube inside the tank develp a crack and I had the same symptoms as a bad fuel pump.

 

[Big Ray]

I'd change the filter before I dropped the tank...

 

[berg76]

I've changed the filter. It has been sitting for a few years because i had no funds for the tranny. I imagine some decay took place. Tires are now dry rotted, etc.

 

[samsterman99]

Take the air cleaner off and look down at the injectors while the motor is running. May need a friend to turn it over. You should be able to tell if the fuel pump is working. Don't drop the tank until you verify it's the pump. I would hate to go through all that and find out the pump was okay.

 

[harry 387]

I had to drop my tank, it was a bitch had nearly 25 gallons of fuel in it. Did some measuring and figured out where the pump and return lines were. Cut a 12x12" hole in the floor, used some 1/2" angle on the front and rear sides one leg under the floor. Welded it in and cut a plate 2" larger on each side and screwed it down with #12 x1/2" stainless screws, be sure to put a small bead of calk around inside edge so no air leaks. Painted the plate and all welds with undercoating.

 

[berg76]

Its injecting fuel to start. Starts, then stops. I'm going to work on it tomorrow again and see if I've overlooked something.

 

[dyeager535]

Assuming there was no gas in it at all? If there was any sort of old gas in there, I'd be really surprised if 5 gallons of new would be enough to dilute it.

I wouldn't think it would fire at all if the gas is that bad though.

 

[4xcrazy]

Mine threw that MAP sensor code when the hose split in the tank. replaced it, still did it. After that, I ALWAYS check fuel pressure with ANY fuel injected engine now when it seems like steady running problem.

 

[eagle mark]

If you rev the engine will it keep going? If not there is a red wire coming off the fuel pump relay, run 12 volt power to it, this will keep the pump running always.

Borrow a fuel pressure gauge from the auto parts store and verify you have a fuel pressure issue before pulling tank.

MAP error code? Check vacuum line for connections and no leaks. It should be hooked to center port rear of TBI between fuel lines.

 

[berg76]

So i ended dropping the tank. The little rubber hose was cracked... She finally runs. Runs good to. Need new tire now.

 

[eagle mark]

Well there's a site we have all seen many times before...

 

[4xcrazy]

YUP, Imagine that...

 

[Big Ray]