This car was given to me. 90,000 miles and has been in storage many years. Replaced fuel pump, filter and gasoline, new plugs and ran the fuel distributor with the lines off to purge clean fuel through the system. All the ports in the distributor flow fuel.

Here is the problem, which I think existed before the car was parked, hence the pitch-black plugs.

The car will start and run ONLY if the injector lines are cracked, meaning there is way too much fuel entering the engine.

Everything 'looks' good, but I am suspecting the fuel distributor/EHA valve.

Thoughts????

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Did you just pass my 740 at 200 kmh in a 300SD?????

1978 300SD 'Phil' - 1,315,853 Miles And Counting - 1, 317,885 as of 12/27/2012 - 1,333,000 as of 05/10/2013, 1,337,850 as of July 15, 2013, 1,339,000 as of August 13, 2013



100,000 miles since June 2005 Overhaul - Sold January 25th, 2014 After 1,344,246 Miles & 20 Years of Ownership

DB:

Give a thought to unplugging the EHA; when it is in the "neutral", limp home mode it is only slightly rich. Then adjust the mixture screw progressively in the lean direction (CCW). If the plug is still in the adjustment tower between the airflow sensor and the fuel dist., the easiest thing to do is to drill out the screws that retain the tower.

Alternatively, the fuel pressure regulator may be stuck, failing to return enough fuel to tank.

Good idea...

The plug is out of the adjustment tower...I will check fuel pressures tomorrow....Thanks!!!!!!!!!!

__________________
Did you just pass my 740 at 200 kmh in a 300SD?????

1978 300SD 'Phil' - 1,315,853 Miles And Counting - 1, 317,885 as of 12/27/2012 - 1,333,000 as of 05/10/2013, 1,337,850 as of July 15, 2013, 1,339,000 as of August 13, 2013



100,000 miles since June 2005 Overhaul - Sold January 25th, 2014 After 1,344,246 Miles & 20 Years of Ownership

Pressure test reveals 85 psi during pump operation, well within the specification....

__________________
Did you just pass my 740 at 200 kmh in a 300SD?????

1978 300SD 'Phil' - 1,315,853 Miles And Counting - 1, 317,885 as of 12/27/2012 - 1,333,000 as of 05/10/2013, 1,337,850 as of July 15, 2013, 1,339,000 as of August 13, 2013



100,000 miles since June 2005 Overhaul - Sold January 25th, 2014 After 1,344,246 Miles & 20 Years of Ownership

Turned mixture adjusting screw in 5 turns and the 300SE starts and runs on its own. Adjustments to follow...

Thanks, Frank...

__________________
Did you just pass my 740 at 200 kmh in a 300SD?????

1978 300SD 'Phil' - 1,315,853 Miles And Counting - 1, 317,885 as of 12/27/2012 - 1,333,000 as of 05/10/2013, 1,337,850 as of July 15, 2013, 1,339,000 as of August 13, 2013



100,000 miles since June 2005 Overhaul - Sold January 25th, 2014 After 1,344,246 Miles & 20 Years of Ownership

I was thinking you were giving it away. LOL. I'm going to look at 1990 model today that I might get if the interior is in good condition. I want to swap it in my 300SD. Sounds like the 300SE I am looking at has some starting issues, too. I just need it to drive home, though.

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1991 F250 super-cab 7.3 IDI. (rebuilt by me) Banks Sidewinder turbo, hydroboost brakes, new IP and injectors.
2003 S430 - 107K
1983 300SD - Tanoshii - mostly restored ~400K+.
1983 300SD - Good interior. Engine finally tamed ~250K.
Monark Nozzle Install Video - http://tinyurl.com/ptd2tge