1979 300cd no start please help - Page 4 - PeachParts Mercedes-Benz Forum

eggsandtoast · #46 03-01-2016, 08:00 AM

Quote:

Originally Posted by tyl604

Oil? What is it doing now? Did you recheck the compression now that it is running?

It starts now, the car is a weekend project so I will check compression this coming weekend.

eggsandtoast · #47 03-01-2016, 08:02 AM

Quote:

Originally Posted by barry12345

This engine ever run on waste vegetable oil? Sounds like the rings were/are gummed up. Soaking the cylinders in miracle mystery oil sometimes helps to loosen up the rings.

Yes about 7 years ago my dad ran biodiesel in it (50% bio/ 50% diesel) I will look into the miracle mystery oil.

barry12345 · #48 03-01-2016, 10:59 AM

When the car sat around what residue was in the ring lands may have turned to a glue like substance. That perhaps is why the compression was only about a hundred pounds. It could have not been that low when the engine was running before as at that compression number these engines cannot start.

If possible plug In the block heater when adding miracle mystery oil to the cylinders and add a little more each day. I would do this for perhaps two weeks. Then recheck compression. If better then change the oil as the thin mystery oil will have gotten into it. If car starts add some mystery oil to the base oil and drive it.

Buying or working on a car that has used alternative fuels. The longer they have sat the harder it may be to deal with the issues if any that present themselves.

eggsandtoast · #49 03-01-2016, 05:13 PM

Quote:

Originally Posted by barry12345

When the car sat around what residue was in the ring lands may have turned to a glue like substance. That perhaps is why the compression was only about a hundred pounds. It could have not been that low when the engine was running before as at that compression number these engines cannot start.

If possible plug In the block heater when adding miracle mystery oil to the cylinders and add a little more each day. I would do this for perhaps two weeks. Then recheck compression. If better then change the oil as the thin mystery oil will have gotten into it. If car starts add some mystery oil to the base oil and drive it.

Buying or working on a car that has used alternative fuels. The longer they have sat the harder it may be to deal with the issues if any that present themselves.

Ok, I will thank you

leathermang · #50 03-01-2016, 05:33 PM

From what I have read over the years about the veggie fuel.... it ought be ' required' that that fact be etched into a window somewhere..... LOL
Or added to the title along with the mileage or accidents.... LOL

eggsandtoast · #51 03-02-2016, 02:50 PM

Quote:

Originally Posted by leathermang

From what I have read over the years about the veggie fuel.... it ought be ' required' that that fact be etched into a window somewhere..... LOL
Or added to the title along with the mileage or accidents.... LOL

I agree

leathermang · #52 03-02-2016, 02:53 PM

So you are back to it being all up and running and good to go ?

barry12345 · #53 03-02-2016, 05:44 PM

To be fair the rings could have just gotten hung up if the car sat around unused for many years. In my experience diesel engines are just slower to seize rings than gas cars.

eggsandtoast · #54 03-03-2016, 07:25 PM

Quote:

Originally Posted by leathermang

From what I have read over the years about the veggie fuel.... it ought be ' required' that that fact be etched into a window somewhere..... LOL
Or added to the title along with the mileage or accidents.... LOL

I agree

eggsandtoast · #55 03-03-2016, 07:26 PM

Snow everywhere