I have an 83 MB 300D with the greasecar kit and I can't get her to run on grease. I think the problem is that I can't get the grease to the IP. How do you prime this side?

The car runs great on diesel, so I don't think that there is anything wrong with the engine. The kit was installed about a month ago. I have checked the plumbing numerous times, it is correct. I have also tested the valves and switch with a voltmeter-everything is working properly. I removed the feed lines to valve "A" and blown air through to test-diesel feed with no power and grease side with switch on. I also, for lack of a better method, hooked up my shop vac to the pex line to make sure I could draw from the grease tank and that was a little messy but worked. I filled the filter with veggie oil and the grease tank has store-bought oil in it.

So, I think my problem is that there is air in that line. I tried using the primer pump (which I also replaced) with the system switched on, but that did not seem to help.

And here is what is really confusing me- if I prime the grease side using the primer pump and then switch over to grease, the car stutters for a moment and will then run. It's a little short on power, but mostly OK. But I can tell from the diesel and grease tank gauges that she is burning diesel. (Doesn't smell like veggie oil at the exhaust, either.) If the system is working, where is the engine getting diesel from?

Thanks for reading all that! Rich

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Rich

83 300D
98 E320 Wagon