Hello everyone,

I am no stranger to WVO installs, but all of my experience has been with VW, Mercedes, and Isuzu inline, mechanical motors.

I am doing my first Powerstroke conversion on a 1995 F-250 and everything is going great, but I still have one BIG question....

Where (or rather, how) should I split the fuel system between Diesel and WVO?

Here is a picture to help....


My first inclination is to split the fuel system between the bottom of the fuel filter and the high pressure side of the lift pump, and use a 12V pump to supply WVO and the normal low pressure side of the stock pump for diesel. However, there can't be more than an inch between the bottom of the filter and the pump. Do any of you split it there? If so how?

I understand that the fuel pump is a two part pump that acts as a lift pump (4-6psi) and a high pressure supply pump to the fuel rails (40-70psi), however is that high pressure side of the pump able to handle hot WVO? In theory, it should, because by the time the WVO reaches the pump it will be the same viscosity as diesel. However, I thought I should ask because practice often often differs from theory, and you guys have the over the road experience.

If the stock pump will not work with WVO I have an alternative plan to supply the rails with WVO, however it will cost me an extra $300, plus the cost of making a new manifold out of push-loc fittings and high pressure hose.

What am I missing here? There has got to be another way than the vegistroke 94-97 upgrade....

Hope someone can help, and glad to be part of the forum....I have been taking a bunch of photos of the install and will post upon successful completion....Joe

I think that you might find some information at http://www.fattywagons.com/install%20page.htm . I wonder how the other kit sellers ( like Greasecar , Golden Fuel Systems and Plantdrive ) handle the early and later model Powerstrokes ?

From all that I have read, the Vegistroke type manifold and check valve system seems to be the best .

Hi there,
Try this http://www.votechusa.com/phpbb2/showthread.php?t=92

I used Greasecar.com valves.
I have a 96 F250

Hey folks-

New to the forum and to WVO. I've been trying to get into a WVO truck for a long while and finally found an F250. Recently it was converted by GFS, who leaves the stock lift pump in place. Since the conversion I had to replace the lift pump. There was some leakage prior to conversion (I think the pump was the cause, anyway), but after 200 miles on WVO it was really leaking rapidly. Blowing fuel out the weep hole. Now after replacing the pump and running maybe 25 miles on WVO I find it may be blown again.

I am having trouble finding a clear answer about this problem Some people say they've never had any problems running WVO through the stock pump, while others say the OE pump must be replace, rebuilt or bypassed with a new, separate WVO pump. Any help would be appreciated as I really need to get this working.

Thanks!

It seems that I go through a stock fuel pump (for the 94-97 Powerstroke) every year or so (15K VO miles) since running VO through it. Since I change the fuel pumps myself it's really no big deal as it costs $91.99 at Auto Zone. I still say it's less costly replacing it as needed than upgrading to the FA$$ pump & pre$$ure regulator...even if they offer a five year warranty. Every time I replace it I'm shocked at the VO crud that I clean out so these fuel systems on VO definitely need a periodic cleaning.

The aftermarket fuel pump is a good one. I know several people who use it and without any problems. Either your oil is not clean enough or warm enough when running VO or your pump isn't below the tank level and may starve oil at times, which puts wear and tear on this pump. Definitly need to do some troubleshooting of the problem rather than throw pumps at it, IMO.

That pump is a great pump, almost as good as the HPFP or it's cousin.

quote:

The aftermarket fuel pump is a good one. I know several people who use it and without any problems.

HoldOn can you clarify? Which pump?

Also, as my mechanical skills are limited (oil changes, tuning older engines like my grandma's 61 Impala), can you suggest specific troubleshooting approaches?

I am confused about the pump vs tank level issue. There is a booster pump on my tank which sits in the truck bed. Would the pump not occasionally be above the tank anyway when climbing a hill?

Thanks for your help!

Ed

Ed D,
The fuel pump is an electric fuel pump used on 99.5 and later 7.3l Fords. That pump can be had on Ebay for about $65 new + shipping. If I were converting an older diesel, I'd use one of the later model pumps which is electric and can put out up to 100 psi, although 64 psi is the pressure regulated setting on the newer 7.3 L engines. One other piece of advice besides keeping it below the tank fuel level, just be sure your oil is warm by the time it gets to the pump, either by HOH or HIH, and your engine is up to temp when you switch it on. That pump is amazing...so small and yet reliable, and powerful.