i'd be replacing the return lines now for sure; if you got any of that
stuff on the return lines, they may well be shrinking up, and start to
pop off making an extra-special mess of the hood liner and everything
else under the hood.
i still didn't see howl old the return lines are; those things
aren't expected to last forever.
cheers!
e
On 01/Jan/15 20:08, Andrew Strasfogel wrote:
I used orange spray stuff - not too harsh - to clean up the valve
cover and injectors and fuel lines. Then went for a 25 mile drive up
I-270 and back. I popped the hood - there is no evidence of leakage
anywhere.
On Thu, Jan 1, 2015 at 8:35 PM, ernest breakfield
<erne...@backyardengineering.org
<mailto:erne...@backyardengineering.org>> wrote:
the return lines are not the metal ones *to* the injectors.
and i don't think there'd be any cause to worry about an
engine cleaner damaging a metal line, since metal is what most of
the engine is made of.
cheers!
e
On 31/Dec/14 13:04, Andrew Strasfogel wrote:
You mean the bent metal lines to the injectors? Or the flexible
rubber/cloth lines between each injector?
On Wed, Dec 31, 2014 at 3:21 PM, ernest breakfield via Mercedes
<mercedes@okiebenz.com <mailto:mercedes@okiebenz.com>> wrote:
be careful what you "clean the engine" with; the stock return
lines are pretty easily destroyed by many engine degreasers
and cleaners.
i didn't see how long it's been since you replaced the
ones that are in there, but frankly, i'd just replace the
return lines all with known new good lines; it's the
quickest/cheapest/easiest possible solution, and on the off
chance that it doesn't solve the problem it's the easiest way
to eliminate them as a possibility of the cause of the leak.
cheers!
e
On 26/Dec/14 19:36, Andrew Strasfogel via Mercedes wrote:
Great input - thanks. Clearly, I need to clean the engine
and watch for
the fuel to appear. The cloth injector lines are
pristine; in every other
case of leaky lines they were saturated (dark colored).
Mine are still dry
and white from one end to the other.
This is a CA version 1985 300TD - could that have
something to do with it?
On Fri, Dec 26, 2014 at 9:38 PM, Curly McLain via Mercedes <
mercedes@okiebenz.com <mailto:mercedes@okiebenz.com>> wrote:
If you don't have any luck with the return lines as
other suggested and you
go for replacement, then replace all the
injectors. Or better yet, have
them rebuilt by someone competent.
But avoid those Indian bosch rebuilds, they're
really horrible. I just
confirmed this in a 240D I bought a few weeks
ago... the car ran very
poorly, nailing and knocking. The injectors
looked recently installed as
they were very clean. They tested ok on the pop
tester, but I rebuilt them
with new nozzles anyway. Huge improvement.
Good luck,
Jaime
I've seen compression leaks when the nozzle seal/heat
shield is not seated
properly, and leaks from the lines and from the
return hose, but never from
the body of an injector. If the nozzles and nozzle
holders are un-fiddled
with, then you are looking at hoses as the most
likely source of the leak,
(99%) If someone has recently fiddled with the
Nozzle holders, the they
may not have been assembled correctly and could be
leaking.
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