No fuel to the rail. Is it my lift pump, injection pump, or ??? - Page 2 - PeachParts Mercedes-Benz Forum

markg612 · #16 10-01-2011, 03:10 PM

Quote:

Originally Posted by ccrobin

OK, It is running. I bypassed the mechanical pump using the electric and it seems to run great now. Thank you all for your help!

A few of you commented about bypassing the fuel T-stat. Are you referring to the fuel heater located lower and aft of the OE pump? Currently I am still running through that but could bypass it easily if recommended. What would be the purpose of bypassing it?

You have a heater/heat exchanger and a fuel thermostat.

In Minnesota, both need to work.

Gelling really sucks.

sixto · #17 10-01-2011, 04:53 PM

No need to touch the fuel thermostat, sounds like you found it, if it isn't leaking. If you touch it, it will leak.

Sixto
87 300D

ccrobin · #18 10-01-2011, 06:28 PM

Quote:

Originally Posted by sixto

No need to touch the fuel thermostat, sounds like you found it, if it isn't leaking. If you touch it, it will leak.

Sixto
87 300D

HA!! That's nice to know. It is hooked up and seems to be working fine, so I will leave it be then.

NOTE TO SELF...NO TOUCHIE THE FUEL THERMOSTAT

sixto · #19 10-01-2011, 06:46 PM

A rebuild kit isn't expensive as MB parts go. There's basically a circlip holding an increasingly brittle plastic nipple and o-ring. A new o-ring will fix the leak if the nipple doesn't break in the process handling it.

Sixto
87 300D

ccrobin · #20 10-01-2011, 07:15 PM

I didn't think they made a rebuild kit for my pump. Remember, I have a 603 engine (300SDL).

If they make a rebuild kit for the pump I'd love to know though. I would definitely go that route.

sixto · #21 10-01-2011, 07:26 PM

Sorry, rebuilt kit and individual parts for the fuel thermostat... in case you touch it.

Sixto
87 300D

ccrobin · #22 10-02-2011, 08:56 AM

Ahhh.gotcha. Thanks.