Re: [diesel_mercedes] Here's a good one for you guys

Thanks, Nate. I suspected it but the problem is worse as the car warms up. It runs pretty well for the first 20-25 miles. Would that support the lift pump theory?

Mark



On 6/19/2011 3:41 PM, Nate Rector wrote:
sounds like a lift pump is almost gone.

--- On Sun, 6/19/11, Mark Atkins <mratkins@embarqmail.com> wrote:

From: Mark Atkins <mratkins@embarqmail.com>
Subject: [diesel_mercedes] Here's a good one for you guys
To: diesel_mercedes@yahoogroups.com
Date: Sunday, June 19, 2011, 3:29 PM

My friend has an '85 300SD with about 210K miles. He bought it a year, or so, ago and has had a recurring problem that is driving us crazy. We went on an 800 mile round trip "adventure" this weekend that allows me to share the problem accurately.

Shortly after he bought the car he went on a trip and experienced a loss of power which reduced the top speed to ~45 mph. He returned home and changed the fuel filters thinking that was the problem. Since we have taken a few 400 mile round trips in the car and it would lose power intermittently but never limit the speed to less than about 60 mph. He discovered that topping the fuel off seemed to help with the problem, however, the problem has occurred more and more frequently as time has passed. This weekend the problem was so bad that any overpass the car would lose power and speed would drop to 40-45 mph and a couple of large bridges it would only top them at 15-20 mph. Top speed on level ground (I-10 in southern LA and Texas) was 40-45 mph the entire return trip. That, my friends, SUCKS! One bridge in LA and one over the Houston ship channel, on the return trip, the speedo would barely indicate movement (as confirmed by our sight!). Houston to New Orleans is usually a 6 hour trip, each way, but we spent 10.5 hours getting there and 12.5-13 returning. Unacceptable!

We have checked the fuel system from the tank strainer to the injector pump and it is not plugged. The car surges at WOT similar to a "hit and miss" type engine (see YouTube for example). I suspect the problem is the injector pump but do not know of a way to troubleshoot it.

The car is otherwise a beautiful example of a vintage SD and has been well cared for it's entire life.

Any suggestions?

Thanks,

Mark in Texas
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[diesel_mercedes] Re: Glow plugs

 



--- In diesel_mercedes@yahoogroups.com, briankk <briankk@...> wrote:
>
> To whom it may concern:
>
> The dead Bosch plugs were 0250201 039 marked "Made in France" (!)
> The surviving Beru is 0100 221107, marked "Made in Germany"
>
> Looking around for Beru plugs, lots of sites advertise "for 1983 300SD", but do not give the Beru part number. Not sure this matters, this thing has likely been superseded. FWIW, also finding glow plugs made by AC Delco, and NGK.
>
> bk
>
here's a cheap ebay set for only $6 each for unknown brand, but they look just like bosch

i think i may be using some in my 82 300td

autohaus.az is getting about $10 each for bosch (free ship $50 order, so throw in an oil filter

i probably go through 2 or 3 per year, running and starting on WVO which is a harder life than the diesel fuel life but i pill them and test them every october or so

i'll pay $1.50 each delivered for anyone's pulls that still heat up

i run them until they don't glow and test them with a piece of fairly heavy wire across the battery ..... CAREFULLY, HOT DON'T TOUCH

xx rick
athens, ga

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