starts, drives , then dies

[Roman Tasel]

My truck starts and idles then about a minute, the truck dies. I noticed that the float was low. So I checked the fuel pump and it gushes out fuel pretty good..not the problem. So I checked for vacuum leaks..none. I really want to know what the problem is:mad:

[dgi]

Electric fuel pump? Gets power when the starter is engaged, pumps pressure to the carb. Loses power when engine fires and switch is back to ignition. Runs until carb empties. Sound like that could be it?

 

I once bought a Yota that the owner had towed to the dealer three times. Each time they didn't find a problem and it would run OK a day or two. He finally got POed and stuck a 4 Sale sign on it. I happened to stop to look at it and heard the story. Of course, it started right up and ran about a minute and a half before dying. I bought it for a absolute steal price. Went back with my buddy to pick it up. Got in, cut off the air conditioning switch, fired it up and drove it home 10 miles. Fuel pump relay wouldn't make with the A/C - Heater fan motor on high. Bad, bad switch! :D

[datzenmike]

Look in the glass front of the carb. Is the float down when the fuel is low?

 

If yes take the fuel inlet banjo bolt off and clean the brass screen.

 

No, place some rags under the front, remove the three screws, glass and bezel and find out why the float is stuck.

[Roman Tasel]

The carb shop tested the carb, and it worked perfect.:mad::mad::confused: Oh yeah, I also removed my AC that did not do anything. THEY also removed the watch glass and checked the float, it was fine. The fuel pump is mechanic and brand new as well as the filter.

Edited February 4, 2009 by Roman Tasel

[datzenmike]

The only thing I believe is what YOU know about the carb, not what the carb shop thinks.

 

OK first, when it quits is the carb dry or just low fuel level?

 

Ah it has a bull's eye sight glass type? When it quits can you see any gas in the sight glass?? If you can it's got lots and it's likely something other than lack of fuel.

Edited February 4, 2009 by datzenmike

[banzai510(hainz)]

soon as it dies lift the hood and cycle the linkage and see if gas is being squirted in.. No gas mean float bolw is going dry. sticky needle valave in carb.

 

Is is running off the eleltric choke then once warms up it dies??

Adjust the muixture?????maybe

[Roman Tasel]

After the choke shuts off, it stays running for little bit. The bulls eye is about a 1/4 full after it dies.

[banzai510(hainz)]

I would ck the idle jet also

But usaully when a Idle jet is plugged it wont idle. UNLESS the choke is electric and its running rich thru the main jet.

 

 

But Im only guessing here!!!!!!!!

[Roman Tasel]

Timing problem? The engine backfires before it dies. In the next couple of days, I will be re-timing my engine.

[datsunaholic]

The backfire is it going extremely lean right before it dies. Like the idle circuit is shut off or clogged up, or it's just plain starving.

[Roman Tasel]

well, I re-timed it, and surprisingly it did it good:) It runs alot smoother and all I pretty much have to do is crank the idle and it will be good.

[datzenmike]

Idle cut solenoid. Listen at rear of carb while turning the key onoff on/off. Should hear a click sound if hooked up. The idle cut has to be working or no fuel to the idle circuit.