Trust you to think of the simplest way. Now me, I am a massochist. I would beg, borrow or steal an ammeter to do it. No, you are right. That would be an acceptable way to do it.

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01 Ford Excursion Powerstroke
99 E300 Turbodiesel
91 Vette with 383 motor
05 Polaris Sportsman 800 EFI
06 Polaris Sportsman 500 EFI
03 SeaDoo GTX SC Red
03 SeaDoo GTX SC Yellow
04 Tailgator 21 ft Toy Hauler
11 Harley Davidson 883 SuperLow

I usualy just cycle the glow plugs on a cold engine. Then feel around the glow plug. If it's warm the glow plug is working.

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Jim
82 300SD saved from scrap yard, 86 front clip,85 500SEL rear end,86 wheels.

That it went from not starting at all, to starting right up would lead me to believe that it isn't individual GPs. I would more suspect that the GP fuse is cracked or the GP relay wasn't making good contact.

..just my $.02,
Wes

A change of both fuel filters and by all means replace the darn weeping lines. They are not helping you at all. Make sure ALL the GP are working, so fix the reason the dash light is not on. The fuel is not the issue, but maybe your car is not in adequate condition to start, no matter what fuel you had in it. Just coincidence you put in the fuel and now no start.

my $0.02

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clay

2002 s430 - Victor, a Stately & well tailored chap
1974 450sl - Frosch - Two tone green
1986 SDL - Polei

retired models-
1976 300D - Blei Vanst - it looks silvery
1972 220D - Gump - She was green, simple and ran
1995 E300D - Gave her life to save me against a Dame in a SUV
POS 1987 SDL - Beware Nigerian Scammers