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GeraldK

Canada
88 Posts

Posted - 05/08/2017 :  11:01:35  Show Profile  Reply with Quote
Latest updates from this past weekends work.

Everything on the engine has been re-assembled. Only had the fuel tank and fuel pump left to re-install and ran in to a couple of problems.

I had the tank cleaned out last year but not coated. With the tank sitting empty it seems to be a bit rusty again. Will have to get it re-cleaned and likely coated.

I rebuilt the long body fuel pump according to information I found on the Pagoda SL website. I finally tested the pump and found it to be leaking a lot at the inlet and outlet fittings. Seems the o-ring size they recommend is a bit small. I will look in to getting this fixed. I'm not 100% confident that after fixing this leak that the pump will work properly and I'm open to other options.

Options would include buying a rebuilt short body pump (expensive), find a used pump (local source may be difficult) and aftermarket pump. I came across an old thread here recommending a Mallory Comp 140 pump. Has anyone have experience with this?

Finally I turned over the engine a couple short times after removing the spark plugs and squirting some oil in to the cylinders. How long should it take for the oil pressure to build up? The needle didn't budge from its resting position. The engine, filter and cooler were completely drained prior to refilling. The car is also slightly inclined to the rear which I'm not sure would make a difference in the oil pick up.

Gerald
1969 300 SEL 6.3 #0795
1959 190 SL
Calgary, AB
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Ron B

Australia
11545 Posts

Posted - 05/09/2017 :  05:24:59  Show Profile  Visit Ron B's Homepage  Reply with Quote
The oil filter takes a liter by itself so you have to wind it over a bit to fill that and the oil cooler .
I am getting a lot of cars here with rusty tanks lately .Modern fuels contain some weird stuff which attracts water so your tank would indeed begin to rust if left empty. Get s POR15 tank liner and it will cure any rust problems from happening again .

quote:
12-14-2004, 11:49 PM #8
Tom Hanson
MBCA Member

What the heck, try to stuff a MB 6.9 liter V8 in it. What a machine that would be..
__________________
Tom Hanson
Orange County Section
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GeraldK

Canada
88 Posts

Posted - 05/09/2017 :  14:01:58  Show Profile  Reply with Quote
I'll continue to crank the engine to see if it eventually comes up. I didn't want to crank for too long at one time.

That POR15 looks to have some good reviews and not too expensive.

Thanks.

Update, oil pressure came up tonight when I cranked it over.

Gerald
1969 300 SEL 6.3 #0795
1959 190 SL
Calgary, AB

Edited by - GeraldK on 05/09/2017 20:52:35
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hughc

Canada
68 Posts

Posted - 05/09/2017 :  21:34:29  Show Profile  Visit hughc's Homepage  Reply with Quote
Welcome Gerald:

i live in Halifax NS

1965 600 SWB euro
1970 and 1971 300 SE ^.3's
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GeraldK

Canada
88 Posts

Posted - 05/10/2017 :  11:52:48  Show Profile  Reply with Quote
quote:
Originally posted by hughc

Welcome Gerald:

i live in Halifax NS

1965 600 SWB euro
1970 and 1971 300 SE ^.3's



Thanks Hugh. Doesn't appear there are too many of us Canadians on here.

Gerald
1969 300 SEL 6.3 #0795
1959 190 SL
Calgary, AB
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GeraldK

Canada
88 Posts

Posted - 05/31/2017 :  14:24:21  Show Profile  Reply with Quote
Over the past few weeks I fixed the leak on the fuel pump and re cleaned and coated the fuel tank. With all that completed finally was able to get the motor running again. I originally thought it hasn't been run in about 10 years but my father said its closer to 20. It fired right up and ran very well. Here is a short video clip.

https://youtu.be/mYrUC9tlqVo

Next items on the list are finish rebuilding brake calipers and find a leak in the suspension.

Gerald
1969 300 SEL 6.3 #0795
1959 190 SL
Calgary, AB
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daantjie

Canada
895 Posts

Posted - 05/31/2017 :  14:53:51  Show Profile  Reply with Quote
Nice work Gerald! Hope no transmission gremlins and then you'll be ready to go cruising and school some Corvettes

Daniel
1977 450 SEL 6.9
Vancouver, BC
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Ron B

Australia
11545 Posts

Posted - 06/01/2017 :  17:41:26  Show Profile  Visit Ron B's Homepage  Reply with Quote
Running really nicely too, But don't let it idle that fast when it's warmed up, you will break the joint in the diff when you engage reverse.


quote:
12-14-2004, 11:49 PM #8
Tom Hanson
MBCA Member

What the heck, try to stuff a MB 6.9 liter V8 in it. What a machine that would be..
__________________
Tom Hanson
Orange County Section
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GeraldK

Canada
88 Posts

Posted - 06/01/2017 :  22:13:27  Show Profile  Reply with Quote
Thanks for the tip. On that cold start it idling at approximately 800-900 RPM. Tonight I let it run a little longer and the RPMs started to come down to the point where it started to stumble and eventually stall. I'll have to browse through some old forum threads and see what troubleshooting tips I can find.

I also put some air in the suspension via a schrader valve at the main control valve. I did not hear any signs of the audible leak I heard when coming front the front left wheel area which I originally heard when transferring the car to my garage. Currently the car is on blocks at all 4 corners with the control rods disconnect at all 3 leveling valves. I've left the air in the system for now and maybe I'll be able to tell if it's leaking or not.

Gerald
1969 300 SEL 6.3 #0795
1959 190 SL
Calgary, AB
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AgSilver

USA
207 Posts

Posted - 06/03/2017 :  12:27:17  Show Profile  Visit AgSilver's Homepage  Reply with Quote
If the engine stalls after it attains operating temperature the problem may be with the fuel pump. The MFI pump requires about 12 PSI throughout its operating range to prevent it from developing a vapor lock. I found that out with my first Mallory pump which had plenty of flow, but only at about 6 PSI. The engine started and ran perfectly until it started to reach operating temperature and the idle slowly decreased and eventually stalled and could not be restarted until the engine/pump cooled. FWIW

Steve



Palm Beach Gardens, FL
Niederheimbach, Germany
300SEL 6.3
E55K AMG
CLK63 AMG Gone
Ferrari 400GTC4
ML400CDI BiTurbo
ML350 CDI BT
9146GT

Edited by - AgSilver on 06/03/2017 12:29:24
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GeraldK

Canada
88 Posts

Posted - 06/05/2017 :  11:07:55  Show Profile  Reply with Quote
Didn't spend much time looking in to this yet but I did have a small fuel leak at the rear fuel damper return line. Also had a loose connection on the vacuum line from the brake booster to the intake manifold.

The motor doesn't die now but it's still idling rough after the warm up. Only test I did on the fuel pump when off the car was that it flowed 1L in 15 seconds.



Gerald
1969 300 SEL 6.3 #0795
1959 190 SL
Calgary, AB
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GeraldK

Canada
88 Posts

Posted - 06/14/2017 :  14:15:11  Show Profile  Reply with Quote
Removed the old front shock absorbers last night. They were a set of KYBs. Going to replace with original Bilstein from the CC. Should I have any concern with the rubber busing sticking out as shown in the picture below ?



Also had a question regarding changing the transmission oil. The service manual states to do this with the transmission at operating temperature. Since I don't quite have the car road ready should I hold off doing this until I can get it to operating temperature or just go ahead and change it cold?

Gerald
1969 300 SEL 6.3 #0795
1959 190 SL
Calgary, AB

Edited by - GeraldK on 08/07/2017 13:48:24
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AgSilver

USA
207 Posts

Posted - 06/15/2017 :  00:07:32  Show Profile  Visit AgSilver's Homepage  Reply with Quote
Press out and save the steel mount. I have a brand new set of Bilsteins on the shelf which I replaced with Koni adjustables set at halfway - - - far better performance.

Palm Beach Gardens, FL
Niederheimbach, Germany
300SEL 6.3
E55K AMG
CLK63 AMG Gone
Ferrari 400GTC4
ML400CDI BiTurbo
ML350 CDI BT
9146GT
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mpmorris

USA
1296 Posts

Posted - 06/15/2017 :  10:18:38  Show Profile  Visit mpmorris's Homepage  Reply with Quote
I'd dump the trans fluid including the torque converter now.
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mpmorris

USA
1296 Posts

Posted - 06/15/2017 :  10:23:16  Show Profile  Visit mpmorris's Homepage  Reply with Quote
I have konis on the black 6.3 (a gift from Jack). Rears are set at 3/4 while the fronts are just above 1/2. The car likes mountain driving.
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