started the day out by driving my buddy up a backroad with a new driveshaft and U-joint in the back of my truck. Buddy had bent his driveshaft in his diesel Cruiser while clambering over what he thought was a pile of snow. Nope...snow hid a boulder. 
anyways, we get to his Cruiser , he does the repair, we have lunch and we prepare to head out. I decided to top up my gas tank with the jerry can before we left. All the coffee in me decided to want to leave so i yelled at Buddy to fill up my tank while i water the tree. Buddy grabs the jerry can and tops off the truck.
you will note he drives a diesel Cruiser. He is used to filling up his Cruiser with diesel. So he naturally grabs the yellow jerry can i keep in my truck (diesel, for slash pile burning) and tops off my tank. My gas tank. gas. yep. gas. not diesel.
I come back from water tree and see him putting the cap on the yellow jerry can. I'm yelling AAAUUGH!!! Buddy looks suddenly sick and realizes his screwup.
no worries, I'm sure that only 5 liters of diesel mixed with 50 liters of gas will dilute it and it will just idle faster and maybe hiccup a bit.
Oh does it hiccup. The fuel pump is only 6 psi and the carb cannot atomize the oily diesel enough, so it spurts out globs instead of atomizing it. Carb is flooding with oily diesel gas and then emptying into the manifold and then burning in the combustion chambers. Nice smoke show! stall run stall run stall run, lurch go lurch go.....
I was'nt worried about the engine, the block is actually a japanese diesel block with heavy duty pistons and rings, but they built it up at the factory as a gas engine. (i could convert, but its megabucks)
The truck is bogging and stalling and hiccuping. It dies out a bunch of times and floods, the venturis in the carb simply cannot atomize the oily mixture enough.
So here comes my backwoods fix:
not enough atomization at the venturis, so i remove the crankcase PCV valve and plug it. This increases the amount of vacumn at the carb dramatically. The engine is still hiccuping and burping but its staying idling and not dying. I remove a few more non critical emissions vacumm hoses and the vacumn increases some more. (keep in mind this an 89 truck with no computer on board, do this with a new truck and it wont start. )
So we drive for about 50kms to burn off fuel, then i stop and fill it with fresh GAS to dilute the mix even more. Engine is purring now, still smoking at the tailpipe as the rest of the diesel mix burns off.
So for those of you with small 4 banger carb'ed engines, if this ever happens to you (diesel in gas) , increase the vacumn at the carb and it will atomize better. And dilute the fuel when you can.
those of you with fuel injection wont have to worry about this....
anyways i had planned to take a bunch of photos, but its kind of hard to do so with no camera, left er on the nightstand....
anyways, we get to his Cruiser , he does the repair, we have lunch and we prepare to head out. I decided to top up my gas tank with the jerry can before we left. All the coffee in me decided to want to leave so i yelled at Buddy to fill up my tank while i water the tree. Buddy grabs the jerry can and tops off the truck.
you will note he drives a diesel Cruiser. He is used to filling up his Cruiser with diesel. So he naturally grabs the yellow jerry can i keep in my truck (diesel, for slash pile burning) and tops off my tank. My gas tank. gas. yep. gas. not diesel.
I come back from water tree and see him putting the cap on the yellow jerry can. I'm yelling AAAUUGH!!! Buddy looks suddenly sick and realizes his screwup.
no worries, I'm sure that only 5 liters of diesel mixed with 50 liters of gas will dilute it and it will just idle faster and maybe hiccup a bit.
Oh does it hiccup. The fuel pump is only 6 psi and the carb cannot atomize the oily diesel enough, so it spurts out globs instead of atomizing it. Carb is flooding with oily diesel gas and then emptying into the manifold and then burning in the combustion chambers. Nice smoke show! stall run stall run stall run, lurch go lurch go.....
I was'nt worried about the engine, the block is actually a japanese diesel block with heavy duty pistons and rings, but they built it up at the factory as a gas engine. (i could convert, but its megabucks)
The truck is bogging and stalling and hiccuping. It dies out a bunch of times and floods, the venturis in the carb simply cannot atomize the oily mixture enough.
So here comes my backwoods fix:
not enough atomization at the venturis, so i remove the crankcase PCV valve and plug it. This increases the amount of vacumn at the carb dramatically. The engine is still hiccuping and burping but its staying idling and not dying. I remove a few more non critical emissions vacumm hoses and the vacumn increases some more. (keep in mind this an 89 truck with no computer on board, do this with a new truck and it wont start. )
So we drive for about 50kms to burn off fuel, then i stop and fill it with fresh GAS to dilute the mix even more. Engine is purring now, still smoking at the tailpipe as the rest of the diesel mix burns off.
So for those of you with small 4 banger carb'ed engines, if this ever happens to you (diesel in gas) , increase the vacumn at the carb and it will atomize better. And dilute the fuel when you can.
those of you with fuel injection wont have to worry about this....
anyways i had planned to take a bunch of photos, but its kind of hard to do so with no camera, left er on the nightstand....
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