>If I have a 76 mercedes 300D that I think has bad glow plugs, can I
>use the blockheater to get it to turn over?
No. Just change th glo plugs. It's really easy.
http://articles.mbz.org/engine/diesel/plugs/

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Tiger - 31 May 2007 23:21 GMT
Test them first... They should have resistance reading of 0.6 ohm.