tried it again and nothing - this time I noticed the Dash GP Light is not coming on at all but I know it used to. I haven't been the primary driver lately so I haven't been watching the dash lights..

When I finally got it started (when this first started) I do recall the dash light being on after I got it running. At the time I dismissed it -

But I suspect you are saying because the dash light was on when the engine was running it indicates a bad GP Warming Relay, right?

Thanks!


On 12/25/2016 7:54 PM, Kaleb C. Striplin via Mercedes wrote:
Is the light coming on? Do you hear the relay click on and off?

Sent from my iPhone

On Dec 25, 2016, at 6:46 PM, Larry Turner via Mercedes <mercedes@okiebenz.com> 
wrote:

Tried to do some last minute shopping Thursday and she wouldn't fire up without 
some very extended cranking.

It's very rare for it to take more than a few revolutions of the engine.  So I 
replaced all of the Glow Plugs just in case, but it didn't help.

I don't think it is the Glow Plug Relay because it usually tries to start after 
cranking for 10-15 seconds, but this time I am getting nothing!  It's not 
trying to start at all.  Saturday before I changed the GPs, I got it to start 
by cranking it.  It started firing on 2 then three and finally it was on 4 and 
5 I think.

BTW, I did a Oil Analysis on it last year and all the numbers came out exactly 
where they should be.  Very low metal contamination, no water content and 
almost no fuel content. Also, the fuel mileage has stayed stable at 30 mpg +/- 
2 mpg.

I will test the Relay tomorrow just in case. *Any ideas?*

Thanks,

LarryT

'91 300D 2.5 Turbo
280,000 miles

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