Lowwww buck conversion...problems?!
So the quick and dirty is that I 'converted' my 95 PSD to run on WVO that's been dewatered/filtered down to 5 microns.
The first time I drove it after the conversion, in the winter in Indiana, it was fine for a while then sputtered (hard) and eventually died. It took a lot of cranking, and unplugging the IPR, to get it started again. But once it was running again it was fine!!!
My system is basically the stock system, so the fuel mixes. Stock fuel lines + aluminum fuel lines to/from the front (wvo) tank, and an aluminum line coiled inside tank with coolant running through it for heat (tapped into coolant lines, returns to bottom of radiator). Stock switching valve moved under the hood for easier access. Biofuel approved rubber lines from switching valve to fuel pump and from fuel bowl return. No other changes. No added temp gauge or fuel pressure gauge for the system. No check valves.
It has been idling rough for months, probably since the conversion, but perhaps it was running rough before the conversion and I didn't notice because I hadn't driven the truck much since I bought it.
Two weeks ago I drove to NC from IN, through the mountains. The truck ran great! 90% of the way on WVO. Cruise control and A/C worked fine. No problems. But on the way home, as soon as I'd hit an incline, I'd lose power. The engine would 'sputter' like it was fuel starved (?) or sucking air or ??? But downhill or level ground it was normal.
The idle has since progressively become more erratic. Hot or cold, WVO or dino diesel, it doesn't seem to matter!
Many months ago I replaced the CPS and IPR. More recently, valve cover gaskets were replaced. All four connections on the gasket sets had at least one of the leads totally melted. I thought replacing those would lead to it running better. It actually runs worse now.
Any ideas out there?! I'm sort of at my wits end with this thing. I've dumped a *lot* of heart into it, elbow grease, and money better spent on other things.
THANK YOU FOR ANY ASSISTANCE ;-)
Last edited by green_machine; 08-21-2013 at 11:42 AM.