Thanks!
DG
--- Kevin [EMAIL PROTECTED] wrote:
On Mon, Oct 03, 2005 at 12:54:50PM -0700, David
Goldsmith wrote:
Hi, folks! Wife and I are on the verge of buying
an
'00 Dodge 2500 diesel to run on biodiesel. My
main
concern, given my history, is with fuel injector
return lines. On examining the engine, I noted
that
the injectors appear to be inside the engine
block, or
at least not have return lines. Which of these is
in
fact the case? If the injectors are inside the
block,
do they have return lines, and if so, are they
made of
rubber, metal, or what? If made of non-Viton
rubber,
how difficult is it to get at them to replace
them?
I don't believe that the cummins has external return
lines, so I
wouldn't be worried about that.
Are there any other biodiesel-related issues
particular to Cummins diesels of this era of which
we
should be aware?
The Cummins has a fuel lubricated injector pump. If
the IP doesn't
get enough fuel and you have your foot into it,
damage will occur.
The biodiesel will likely lube the IP better than
dino diesel, as long
as it gets enough of it (i.e. bad lift pumps,
partially clogged filters
towing heavy loads for a long time, etc).
This isn't bio related, but those are a stone cold
b!tch to get started
if you run them out of fuel. One of my friends did
that, and it required
loosening injectors - the primer pump wasn't enough.
Also, the engine was louder than we expected (and
we've heard other diesels, including other diesel
pick-ups which we've test driven, but all these
were
Fords) but otherwise seemed to run smoothly; could
that be cause for concern?
The cummins for whatever reason was much louder than
the IDI
GM engine of that year, and the DI powerchoke. It
also outweighs
both.
Finally, about when do these vehicles need the
timing
belt replaced, and about how expensive a service
is
that (parts and labor)?
There was something about a weak timing cover in the
cummins,
can't remember if it was on the 24v engines or the
12v engines.
Regardless, the timing chain doesn't have a short
service interval
like a TDI. There is also a certain range of blocks
you want to avoid.
There is a faq out there somewhere about this -
check tdr or other ram
web forums for that.
K
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