Its a 2002 ford powerstroke 7.3L split shot injectors
Here are the symptoms:

150 miles ago on the interstate while accelerating up hill at 70 mph I felt a loss of power and the
'service engine' light came on. I regained power and after 5 miles the 'service engine'
light went off and all felt fine, except it appeare that the engine oil level had slightly
risen. We arrived in the city and after a night parked, we drove on diesel for 5 minutes
until the coolant was hot enough to switch to VO.
We drove the next 10 miles on VO. Two different times, when I reached about 20 mph it felt
like the engine skipped a cycle before continuing to accelerate.
At a stop sign a few minutes later, the engine died. I had to purge and turn the engine
off before it would start again. I made it a block to the parking spot, and nOW the engine
does not start at all. I checked the fuel pressure and the fuel lines, which are OK.
It cranks but does not fire. I am afraid that we blew the injectors.

Does anyone have any advice? I have only driven about 3,000 on veggie oil, all within the
past few weeks.
I am desperate and stuck in Minneapolis. Thank you.

 

Sounds like it could be the CPS sensor. Thats an easy thing, and not usually too expensive to try at any rate.

What kind of VO conversion are you running?

 

Check your voltage you need 10.5 volts at the IDM in order for the injectors to fire. Continous cranking will drain down the batteries as will the heater for you WVO system if it is 12 VDC.

 

I run my own conversion with HIH lines and aditional 12VDC inline heater.

 

is there any way to test out the CPS without buying error code scanner???

 

Your best bet would be to go to a dealership and buy a cps. IIRC. The new ones are under 30 dollars.

 

Accelerating up a hill and losing power, then things returning to normal after you get back on flat land is often a sign of a fuel restriction. What kind of filters do you have between the WVO tank and the fuel pump? Have you inspected them to make sure they are clear?

Damaging all 8 injectors at once to the point of preventing a start is rare, but the rising oil level needs some more clarification. How much did the level rise? Does the oil on the dipstick smell like fuel, or does it look like chocolate milk?



Welcome to FTE. With your user name, it sounds like you may be of some use here.

 

i filter VO to 1 micron and the onboard filter is heated 10 micron filter. The fuel pressure is 85 psi on diesel with stock fuel pump on, and 65 psi on VO with fass 150 pump on. I think that the VO filter is fine.
The engine oil does not smell like VO or diesel. But the oil level is definitely a little bit higher than before this trip.

I read about a laboratory where they test engine oil samples , but i lost the link. does anyone know about it?

 

Thanks!

 

Blackstone is one such lab. I have used them before and have been happy with them.
http://www.blackstone-labs.com/


Have you checked your fuel pressure measurements from a guage after you truck has quit running? I doubt both fuel systems would fail together unless the problem was a common component for both VO and diesel. I assume you have seperate filters?

Based on what we know so far, there could be several causes. I think I would proceed in the following order:

1. Make sure you have good battery voltage as mentioned earlier.

2. Replace CPS sensor. If problem still exists you have a spare which is nice to have.

3. Verify fuel pressure at fuel rail.

4. Check connectors on each valve cover gasket and engine wire harness for any breaks.

5. Report back.

 

i installed the new CPS, and the problem consist. The fuel pressure is 65psi and the battery shows 11.7V while cranking, but the Engine Oil level now shows empty (although it is full). The engine cranks , the diesel pump- pumps , all the lights on dashboard glow , but the oil gauge doesnt move. Please help i am lost and stuck.

 

What exactly do you mean by this? If you pull the dipstick, do you see oil on it? Are you referring to the oil pressure gauge in the dash? Do you have some other gauge or something else you're referring to?

 

The dipstick shows that the engine oil is full, but the oil pressure gauge on the dash shows no pressure while cranking.

 

update : i measured the injectors resistance at the valve cover connectors , here are the values:
drivers side: 4 , 4.2 , 4 , 3.8 Ohm
pass side: 7.6 , 7.6 , 4.2 , 7.2 Ohm

When i bought the car (7 months ago) i discovered oil on the ICP connector , could this be related to no start

 

I'm not familiar with the SVO systems, but do you still use the fuel bowl with it? Is it filling up with fuel if so? Do the 02's have the notorious fuse #30 with the heater shorting?