Thanks for the reply. I hope others do as well. I run veg oil through my system. I live in a tropical climate and the car has run very for the last two years. I have drilled three 1/8 inch holes at an angle in the spin on filter. This is so that I can run a metal mesh micron filter as the main filter. Those paper filters clog too fast.The metal mesh is able to be cleaned every 300 miles with a high pressure garden hose.
The video shows blowzy. Is that what is draining my power? I hope not. It seams as if I am not getting enough fuel when starting and when accelerating. I have run a separate tank to verify that it is not the main fuel tank nor air from long lines. I was hoping it could be the injection pump timing. I have checked the chain stretch. It is dead on. Thanks again for those that reply…Goldveg

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1985 W126 300sd

First of all, what is blowzy? You used the term twice so it is not a typo I assume. The idle response to throttle sounds normal- maybe just a tad slow. Can't tell much at idle, engine must be under load.

Need to know more about your veg system. Single tank, dual tank? Need more info on that metal mesh filter with the drilled holes. Sounds strange. Any pics? Having to clean the filter every 300 miles suggests your fuel is not well filtered and may be a clue to your problems.

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85 300D turbo pristine w 157k when purchased 167,870 July 2025
83 300 D turbo 297K runs great. SOLD!
83 240D 4 spd manual- parted out then junked

x2.

This wouldn't happen to be a Lovecraft setup, would it? Your mods sound awfully like what they used to market.

Poor quality WVO has been known to mess up the lift pump over time. Aside from the other range of problems from unheated and/or improperly filtered WVO.

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Mac
2002 e320 4matic estate│1985 300d│1980 300td
Previous: 1979 & 1982 & 1983 300sd │ 1982 240d

“Let's take a drive into the middle of nowhere with a packet of Marlboro lights and talk about our lives.” ― Joseph Heller, Catch-22