White / gray smoke 85 300D

[sun tortise]

85 300D smokes too much! Billowing clouds of white to gray smoke on start up, diminishes considerably when warmed up, but will put out quite a cloud if i punch the accelerator, or drive up a steep hill.

Car has about 200,000 miles. It has run about 35,000 miles on unheated WVO with a little gasoline, in warm weather only. I use only thin decent oil not cooked to death, filtered to 1 micron, and have had few problems. I regularly add some transmission fluid, and Diesel kleen.

Compression is about 300 p.s.i. in all 5, but nevertheless, i have switched to Kerosene /diesel now that the weather is cooler, and also did a week long Marvel mystery oil soak. I used almost the full quart, and cranked the engine a bunch before putting the injectors back. I had previously disassembled and cleaned the injectors as per one of the procedures elsewhere on the forum. They were quite clean internally, but had some crud in the pintle area. Soaked the bottoms of them in M.M.O.while the rings were soaking.

I'm thinking the M.M.O. probably seeped past the rings into the crankcase, and not sure to run it a while before changing the oil to clean out sludge etc., or if i should change the oil right away. I read somewhere to add a qt of tranny fluid to the crankcase oil and run it about 50 miles.

I also changed the spin on fuel filter, and checked the fuel in the old one for moisture, but no visible sign of any. Tried removing the air filter, no difference.

Smoke seems to have diminished a little since the M.M.O. soak.

Car starts a little uneven at first, but idle evens out in about a minute, and she has reasonable power, maybe a tad slow on the uptake if up a hill, especially when not fully warmed up, but i am going to change my tranny fluid filter to eliminate that possibility.

Read about disabling the EGR, but not sure how to do that on a trial basis. Just disconnect two vacuum lines? Where would those lines be, and do they need to be plugged?

I am trying to eliminate everything i can without sophisticated tools before i bite the bullet & spend $200 on new injector nozzles.

Thanks so much for all the awesome advice this forum has provided.