Rough cold start - new glow plugs - Page 2 - PeachParts Mercedes-Benz Forum

qwerty · #16 10-08-2012, 03:58 PM

Quote:

Originally Posted by whunter

I suggest you ignore the light and listen for the CLUNK of the relay going off, before cranking the engine.

It would be better to listen for the clunk, and crank the engine right before you hear it. That way, you will be cranking and glowing at the same time.

homepagz · #17 10-09-2012, 12:31 PM

How long should the relay stay "on" for the GP's? I timed from turn of key to "click" of the GP relay - and it was about 23 secs.

Is that correct? Is that short (time)? Someone else mentioned 40+ secs.

-John

Beastie · #18 10-09-2012, 02:01 PM

I can not remember however from a past posting here it was considerably longer. I will time my 85 300SD later but I am thinking it is 30-40 seconds ?

homepagz · #19 10-09-2012, 02:05 PM

If it is cutting off too soon - how would I correct the timing of the relay? A new relay?

whunter · #20 10-09-2012, 02:09 PM

Quote:

Originally Posted by homepagz

How long should the relay stay "on" for the GP's? I timed from turn of key to "click" of the GP relay - and it was about 23 secs.

Is that correct? Is that short (time)? Someone else mentioned 40+ secs.

-John

What was the ambient temperature???

.

homepagz · #21 10-09-2012, 02:42 PM

I believe it was in the 50's.

-John

whunter · #22 10-09-2012, 03:03 PM

Quote:

Originally Posted by homepagz

I believe it was in the 50's.

-John

Should have been roughly 28 - 38 seconds.

.