draining engine oil after 15 year in storage , hydraulic lifter condition - PeachParts Mercedes-Benz Forum

AfricaXJ6 · #1 11-10-2015, 05:48 PM

hey STretch,

you were spot on.

after the tank and lines were cleaned. found out that the fuel distributor pin(piston) is stuck. possibly the FD is gummed.

Will a FD from a 1983 Mercedes sec work on the 1978 450 slc?

the FD looks identical.

any thoughts?

thanks
C

AfricaXJ6 · #2 11-19-2015, 05:54 PM

HI All,

ended up opening the FD. cleaned it. installed it.

the car started. will do a engine flush and replace oil this week end.

thanks all for your input.
C

Stretch · #3 11-20-2015, 07:46 AM

Quote:

Originally Posted by AfricaXJ6

hey STretch,

you were spot on.

after the tank and lines were cleaned. found out that the fuel distributor pin(piston) is stuck. possibly the FD is gummed.

Will a FD from a 1983 Mercedes sec work on the 1978 450 slc?

the FD looks identical.

any thoughts?

thanks
C

Sorry - don't know

Quote:

Originally Posted by AfricaXJ6

HI All,

ended up opening the FD. cleaned it. installed it.

the car started. will do a engine flush and replace oil this week end.

thanks all for your input.
C

Sorry to be so late - I missed your post.

I'm glad it all worked out.

AfricaXJ6 · #4 01-01-2016, 10:47 AM

HI All

An update on my 450 SLC project.
I ended up flushing all the fuel lines , new fuel filter, pump and a got a working GFD of another merc 450 slc. Fuel tank was flushed and high pressure cleaned.
I am getting at least 3 litres/minute when I do the fuel volume test at the supply line to the FD.
The car starts perfect and idles at 750rpm. When I press the accelerator it increases the rpm with good response, although a bit rough.

However when I put the vehicle in drive and try to move it , it moves but only just and cannot even drive over a small hill.
So essentially no power.
The fuel metering plate feels a bit hard when it is depressed. But this came of a working car, took it off myself, and the plunger piston is moving freely.
Please assist with your thoughts on how I can trouble shoot and resolve this problem.

Will appreciate all your help, I am on vacation and would like to at least drive this car for a few days.

C

Stretch · #5 01-01-2016, 12:19 PM

Quote:

Originally Posted by AfricaXJ6

HI All

An update on my 450 SLC project.
I ended up flushing all the fuel lines , new fuel filter, pump and a got a working GFD of another merc 450 slc. Fuel tank was flushed and high pressure cleaned.
I am getting at least 3 litres/minute when I do the fuel volume test at the supply line to the FD.
The car starts perfect and idles at 750rpm. When I press the accelerator it increases the rpm with good response, although a bit rough.

However when I put the vehicle in drive and try to move it , it moves but only just and cannot even drive over a small hill.
So essentially no power.
The fuel metering plate feels a bit hard when it is depressed. But this came of a working car, took it off myself, and the plunger piston is moving freely.
Please assist with your thoughts on how I can trouble shoot and resolve this problem.

Will appreciate all your help, I am on vacation and would like to at least drive this car for a few days.

C

So the engine revs with good response but is a bit rough? That could be a stuck / sticky injectors. Have you checked them?

As for the automatic transmission - could be a separate problem. Have you changed the transmission fluid and filter? Have you measured the primary pressure of the transmission (or any of the others?). I assume the transmission has been sitting for as long as the rest of the car (!)