DougS wrote:
> I'll look and see if I have any part numbers for those, but they seem
> to be pretty generic items. You didn't mention what year and model you
> have. So I assume its for a '79 300TD.
Ah crap, yeah it's the '85 D that I've mentioned more recently, wrt the
glow plug problems it's been having.
I got new plugs, the pencil-type are the ones Performance sent me.
Pulled the #1 cylinder plug, but the wire connection is totally corroded
onto the nut. I wondered how I'd ever get it out of there and then
discovered that that ****tion of the glow plug was actually separated
from the body of the plug. Anyway, got that all out but even with vice
grips I can't break the corrosion. I'll try more tomorrow (nicer to
work in the daytime) and if nothing else I'll put the five new plugs in.
#1 is the only one I've pulled so far, 2, 3, and 4 look like they
shouldn't be too bad but #5 also looks like a total ***** with the oil
filter right there (not to mention that's where the tap for my fuel
heater goes into the cooling system, which means joy as well).
> The vacuum valve is just a check valve with two exit ****ts.
I found this part on BuyMBParts.com. $26 plus ****pping, and it comes
with the hose and presumably the proper fittings for the vacpump and
brake booster.
> I would think that the harness for the glow plug is also generic.
It's one of those MB plugs on the relay side. I haven't opened one of
those up to see if it's easy to swap out connections, but I ended up
calling BuyMBParts today and they found one for me. I don't want to
screw around with cutting the wires, hoping they reach, and replacing
the connectors, so I just ordered it. Turns out they just ordered it
from MB, so I would have been just as well to go to the dealer myself,
but whatever; it's on its way and I can't drive the car 'til the vacuum
line gets here anyway (the two smaller fittings off of the valve are
broken off clean; didn't even think about disconnecting the vacuum lines
before pulling the fuel rails).
> I should mention that I haven't done either of these things, but I
> have been looking at my check valve on my 84 300D recently to inspect
> it.
I'm relatively certain the one in my '79 isn't holding vacuum either,
and now that I think about it I can't believe I forgot to order the one
for that car as well. Ah, so it goes. Now I know how it comes maybe I
should just get that at the dealer... I'm not sure how to diagnose it
though, as I'm not sure which direction it's supposed to block flow.
Does it provide and hold vacuum to the booster regardless of other
system leaks, or does it use the booster to generate additional vacuum
for the system?
thanks for the response.
-tom!
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