1991 Ford E-350 Q&A
1991 Ford E-350 Question: Starts right up , but only runs for 3 seconds. . . crank-it for 45 sec. to start
My '91 ford E-350 Econoline Diesel 7.3 L is starting hard. When engine is cold (not- run-for-over-eight-hours) it starts up right away, BUT ONLY RUNS FOR 3 SECONDS AND STALLS. It can't be the glo-plugs, because it does start right up on the first try. But after it stalls, I have to crank for about 45 to 50 seconds before it will start. Lots of blue smoke after it starts, but being a diesel, can't tell if that is normal. _______ any guesses ? _____ Shade-Tree-Mech. - Shade-tree-Mech.
I would run a compression test, because of the Blue Smoke, ti could be that your Motor is getting tired and won't stay fired after the glow plugs cool off. Also there may be oil leaking down from the valve guides and casing the smoke. A strong 7.3 should fire right away and stay lit. ( I used to be a Ford Tech ) - dandd
Like Dand D said the engine stays running while the glow plugs are hot once they cool because they are shut off when started, the compression is probbably not high enough to keep the engine firing. You need to pull the glow plugs which are fine and do a commpression check on each cylinder. - powerguy64
Check the WCM (Wireless Control Module; for your key fob,) if you factor in the the 3 second run time. The WCM has effectively tricked you into continuing to attempt to start it while waiting for the police to arrive. $430.00 was price for part, install and programing of the part with a very expensive scanner. - Dodge3500
Dodge 3500 I was informed of another Ford wrecker with similar conditions, turned out to be injector seals. Ordinary O-rings will only have you pulling them to replace them with OEM seals. - Visitor