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1985 Mercedes 300SD Turbo Diesel cranks but won't start
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Dyllan
New User
Feb 12, 2008, 12:23 PM
Post #1 of 3
(2205 views)
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1985 Mercedes 300SD Turbo Diesel cranks but won't start
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I have a 1985 Mercedes 300SD Turbo Diesel with about 140,000 miles on it. Recently it's become increasingly difficult to start, until eventually it wouldn't start at all. It still turns over fine - I can hear the starter turning the engine (at least until I wear the battery down by trying to start it). For a while I could get it to start if I was persistent enough, but now it simply will not start.
I think the problem is my own fault. Here's the history.
This car had been modified slightly. The stock air filter had been replaced with a cone filter. I neglected to check the air filter for some time, and discovered that the top plastic part had cracked open. Since the filter was obviously useless, I tried to replace it, only to find no local store carried the right size cone filter. I found them on eBay, but while I was waiting for the auction to end and the filter to be shipped to me, I drove the car without a filter. I'm certain this led to the problem.
The filter connects to a very short rubber tube that connects to the air intake on the turbo. When I was having trouble starting the car, I tried spraying some starter fluid into that tube. The result was that the car actually had more trouble starting directly after I sprayed starter fluid. And it seemed the more I used, the worse it started.
Any suggestions?
-Dyllan
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DrElectrics
Enthusiast
Feb 12, 2008, 4:56 PM
Post #2 of 3
(2200 views)
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Re: 1985 Mercedes 300SD Turbo Diesel cranks but won't start
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This is not good.
1st thing I would do is make sure you are getting power to everything. get a battery test done, If it cranks a little, you may have some power, but not enough to turn it over. Now, if you are getting nothing, replace your battery. DO NOT SPRAY ANYMORE STARTER FLUID INTO YOUR AIR FILTER. You are choking your car. I think this is now a mechanical issue. But try battery 1st.
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Dyllan
New User
Feb 13, 2008, 7:14 AM
Post #3 of 3
(2198 views)
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Re: 1985 Mercedes 300SD Turbo Diesel cranks but won't start
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Thanks - I figured out not to put starter fluid in there fairly quickly, seeing the affect it had. I was doing it on the advice of a friend who had more good intentions than knowledge, I think.
I have checked the battery - it seems fine. And the starter sounds like it's cranking at normal speed, at least when I have a freshly charged battery. After a while of trying, it drains it. I've already had it charged twice.
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