I have a 1977 300D Mercedes Benz and I just put in new glow plugs and now the glow light won't come on.
It came on before I changed the plugs. and now it will not start.

I took out the pencil type glow plugs and put LOOP type plugs in.

What should I do?

Your LOOP glow plugs won't work with a pencil type setup, your best bet is to get the pencil types, they are better, otherwise you'll have to undo the modification.

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hum.....
1987 300TD 311,000M Stolen. Presumed destroyed

will that fix the glow light?

did you hook up the thick resistance wires between the GP's. Did you conect the ground wire up to the #1 GP?

I recommend you just replace the pencil plugs with pencil plugs, they are MUCH better than the loop plugs.

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1985 300TD Turbo Euro-wagon
1979 280CE 225,200 miles
1985 300D Turbo 264,000 miles
1976 240D 190,000 miles
1979 300TD 220,000

GONE but not forgotten
1976 300D 195,300 miles
1983 300D Turbo 175,000 miles

http://i42.photobucket.com/albums/e3...e485-1-2-1.jpg

Yes i put all the wires back how they were and the light still didn't come on.
i put the ground on the first glow plug and still no light

You do know that the loop plugs have different wires between the plugs, correct? They have the thick buss resistor wires, and use the ceramic bushings...

Check the fuse on the firewall?

__________________
1985 300TD Turbo Euro-wagon
1979 280CE 225,200 miles
1985 300D Turbo 264,000 miles
1976 240D 190,000 miles
1979 300TD 220,000

GONE but not forgotten
1976 300D 195,300 miles
1983 300D Turbo 175,000 miles

http://i42.photobucket.com/albums/e3...e485-1-2-1.jpg

so my best bet on having the light to come on is to put back the pencil type glow plugs?

Hey Cummins27! Was wondering why you don't post on diesel discussion...where real cars don't have spark plugs??

because i made it really qickley and i wanted to get some answers to help solve a problem. yeah i could've got answers there also.

If you hook up the loop plugs correctly you will have the GP light.

__________________
1985 300TD Turbo Euro-wagon
1979 280CE 225,200 miles
1985 300D Turbo 264,000 miles
1976 240D 190,000 miles
1979 300TD 220,000

GONE but not forgotten
1976 300D 195,300 miles
1983 300D Turbo 175,000 miles

http://i42.photobucket.com/albums/e3...e485-1-2-1.jpg

How would i wire the felament plugs right? can you find me a diagram of the correct way.

The loop plugs use totally different wires. look at the pics in this little DIY guide: http://dieselgiant.com/mercedesdieselloopglowplugrepair.htm

__________________
1985 300TD Turbo Euro-wagon
1979 280CE 225,200 miles
1985 300D Turbo 264,000 miles
1976 240D 190,000 miles
1979 300TD 220,000

GONE but not forgotten
1976 300D 195,300 miles
1983 300D Turbo 175,000 miles

http://i42.photobucket.com/albums/e3...e485-1-2-1.jpg