Quote:
Originally Posted by kerry
X2. That's why I decided my troubleshooting tips were inapplicable. Too many stories of people using WVO running into no-start conditions when their IP is failing. I have no idea how a person would test to see if their IP was on the brink from running WVO. I seem to recall some comments about the viscosity of the fuel when cold overcoming the poor performance of the IP and warm thin fuel pushing the IP over the brink.
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My guess is either water got into the pump or the seals are gummed up with WVO residue. This could cause intermettent problems as the OP has described. I cannot see how letting viscous VO sit in the crevices of the IP can not be blamed for at least part of this problem. It would be useful to see if the OP uses some sort of blend or just pours a bunch of waste oil into the tank. Either way there are several key pieces of information missing to make an educated postulate about what exactly is going on here.