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Old 02-11-2006, 01:05 AM
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Question 82' 300 Turbo Diesel won't cold start, needs starting fluid to start cold, WHY? HELP!

my name is charan, I am 17yrs.old
I am thinking about buy a 1982 5 cylinder sedan 300 Turbo Diesel with 100,000 miles for $1,200 obo. The owner say it runs good, but it won't start cold, that he sprays a little bit of starting fluid where the air filter is and it starts right up, and it will start no problem after that until it gets cold. he says he replaced the glow plugs and the fuel filter. Does anyone know what it could be and if that sounds like a good deal? Please let me know,. Also, I was going to convert it to run on Veggie Oil , can anybody tell me the steps on doing that myself?!

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Old 02-11-2006, 01:23 AM
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If all it has wrong with it is cold starting issues, and assuming everything else is in good condition, I'd say for that price with that mileage you've probably got a good deal. They're probably asking a low price because they don't know how to fix something that could be as simple as a bad relay. Something electrical that involves the plugs or the relay is most likely the problem since it starts fine when hot. Do a search on these topics and you'll find hours of reading. Good luck.

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Old 02-11-2006, 01:38 AM
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He says everything is good on it, The engine, Trani.. What are some things you would check before buying it? I know on a gas car you look for smoking and knocking ect. I have never owned a diesel.. so I don't know.
Where would you search about the relay and plug info, Google?
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Old 02-11-2006, 01:40 AM
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Thumbs up

I replied in the other forum too... I forgot about valve adjustment and rack damper bolt position too.
I'm not a doctor, but I'll have a look.

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Old 02-11-2006, 01:49 AM
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WVO and MB maint

No, not Google -- this site's search feature has a ton of maintenance tips, discussions, and tutorials on it -- it takes some work & reading to find what you need, but keep after it. Protocol on this site is that you only ask for help after you have read everything you can find in the search. Diesel Giant has some useful tutorials on his site, too.

For veggie lore, go to & read all the archives & current stuff. To sum a lot of that up, you must have a system in place that heats the (well filtered) vegetable oil to 160F before injecting it, or you'll ruin your engine. Some people disagree with that, but I have read several accounts of people ignoring this advice & figuring they were OK because they engines ran well ----- only to have the engines die because the cold veg produced coke, which is carbon, which ate the engine up.

Good luck.

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Old 02-11-2006, 04:23 AM
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Probably the glow plug circuit.
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Old 02-11-2006, 09:48 AM
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I agree, it is most likely one of two things...possibly both. Glow plugs (and/or their related circuit) or a valve adjustment. There could be collateral damage though from the seller's use of ether...unless the glow plugs are completely dead.
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Old 02-11-2006, 01:40 PM
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Well the seller did state that the glow plugs were replaced. Now granted that doesn't mean that they work, and most sellers lie like crazy, so take that with a grain of salt.

It could be a number of things, from a simple relay to broken rings and no compression.

Read and learn a lot about what you are buying on this site. Also find a shop that knows these cars well and have a PPI done.
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Old 02-12-2006, 10:10 PM
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If it is plugged in (block heater), will it start then?

I'd rather see someone have it plugged in, until they can fix what's wrong, than to see them spray starting fluid in it.

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