SOS: Help after fuel delivery work - Page 2 - PeachParts Mercedes-Benz Forum

mikeyfev1 · #16 09-05-2015, 05:10 PM

Quote:

Originally Posted by dieselbenz1

Make sure the leads that attach to the glow plugs are oriented downwards. If pointed upwards even a small amount the will be in contact with the underside of the manifold and short.

Try a boat primer put in series with the supply line to the prefilter and use that as your primer sure saves cranking.

UPDATE: Went to HF and bought their 7 Pc 3/8 In. Drive Metric Long Reach Ball Head Hex Socket Set and removing/installing those intake manifold bolts became much easier. And sure enough, some of the glow plug leads had become pointed upwards when I had tightened the end nuts.

I reoriented the upward-pointing leads, installed a new glow plug fuse, rechecked that everything was clear and turned on the key (glow position). Waited for about 20 seconds; no blown fuse, so went ahead and cranked with no intake manifold. Three chugs and the engine started! Hurray!

Now I'm off to reinstall the manifold. Are there any tricks to reinstalling the cross-over pipe and getting the gaskets in place all at the same time?

dieselbenz1 · #17 09-05-2015, 05:21 PM

Just use some plastic wood or steel dowels long enough to pull out. They should be loose fitting but in close in diameter. Place 2 dowels in 2 ends, insert gasket, insert manifold, insert a couple bolts and you are home free. The long wobble head hex saves about 45 minutes and you'll be smiling.

mikeyfev1 · #18 09-05-2015, 08:46 PM

This problem has been solved!

Many thanks to everyone who gave advice. It turned out that I had a short between a glow plug wire and the intake manifold.

The 300SDL actually moved out of the driveway under its own power for the first time in several months.