172 Ford tractor engine

PopinJohn

Member
The earlier topic about about Diesel tank heaters by bc got me to remembering a Ford Diesel tractor we
had in the shop for overhaul one winter. After overhauling the engine, it was a bear to get started, the.
mechanic working on it just couldn’t get it to start on ether. Temps in the lower 30’s there in the boot
heel of Missouri. All it would do was knock with ether sprayed in the intake and lock up. So we left it
alone overnight and the next morning, I suggested something different; I wrapped a shop towel around
my hand; soaked in gasoline, and to get the engine to start, I would gently squeeze a few drops of
gasoline in the intake. Wall-aah, it started and the more it ran it finally reached running speed on Diesel.
The injection pump and injectors were fresh rebuilt. Several of the guys in the shop didn’t think my
method would work, but it did. A coolant tank heater was added and when needed, we would plug it in
overnight.
 
I pulled up behind a 2 1/2 ton truck one cold, bitter night that wouldn't start just as an old maintenance sergeant arrived. He did exactly what you describe. Took a grease rag, dipped it in a jerry can of gasoline, held it into the air intake and the engine started right up and ran fine. I learned something that night.
 


with no primer except gravity those take about four hours to prime. I ran mine out of fuel once while raking hay. I didn't even bother to try to prime it. I went and got another tractor.
 
My trencher has the 192 version of that engine. The only pump on it is the injector pump. It was almost impossible to start when ran out of fuel. Soooo I added an electric fuel pump. I crack the fuel line at the i-pump to bleed it and it takes right off
 
And wouldnt the few drops of gas dripped into the intake be way better on the engine than using either?
 
Kind of veering off topic, in the 80s I had a Buick Lesbre with a Olds 5.7 diesel. Which that car had its own stories but those are not for here. I had a buddy who had went through vo-tech ag diesel so he knew a few things about them and had bought one so I thought it was cool and followed suit. Due to the known issue of governor flex rings deteriorating in the Roosa Master pump he had taken the pump off his and resealed and replaced it. Again I followed suit and redid mine, thus learning at least a little about injection pump work. So now to the point of my post, later I got a mechanic job at a GM dealer. Tech in the next bay was working on a 4.3 V6 Olds diesel, he had the pump off it and put it back and was trying to bleed it and get it to start. Had me come over to run the key, then he sprayed WD-40 in the intake which the engine would not run on, but fired in the cylinders enough that it certainly made it easier for the starter to spin and it cranked faster.
 
(quoted from post at 02:29:58 01/09/21) The earlier topic about about Diesel tank heaters by bc got me to remembering a Ford Diesel tractor we
had in the shop for overhaul one winter. After overhauling the engine, it was a bear to get started, the.
mechanic working on it just couldn t get it to start on ether. Temps in the lower 30 s there in the boot
heel of Missouri. [b:2c41bc0f8c]All it would do was knock with ether sprayed in the intake and lock up. [/b:2c41bc0f8c] So we left it
alone overnight and the next morning, I suggested something different; I wrapped a shop towel around
my hand; soaked in gasoline, and to get the engine to start, I would gently squeeze a few drops of
gasoline in the intake. Wall-aah, it started and the more it ran it finally reached running speed on Diesel.

The injection pump and injectors were fresh rebuilt. Several of the guys in the shop didn t think my
method would work, but it did. A coolant tank heater was added and when needed, we would plug it in
overnight.

Sure glad that wasn't my engine that I had hired a supposed professional to overhaul
 

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