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-   -   What's coldest temp your diesels can start??? (http://www.peachparts.com/shopforum/diesel-discussion/240485-whats-coldest-temp-your-diesels-can-start.html)

Actros617 12-17-2008 12:08 AM

What's coldest temp your diesels can start???
 
Mine is at 10*F with new nozzles and Valve adjustment, Hmm... That reminds me i need to change my GP :eek:,

first crank 2 cylindes will start firing, 5-6 second later 3 cylinders will be firing, about 3 seconds later 4 cylinders is firing, than it runs like crap about 3 second then all 5 cylinders fires up, this is what i am experiencing every time when it drops near single digit numbers...By the way i love it when diesel struggles to start but i hate it if it can't start :mad:...

pawoSD 12-17-2008 12:38 AM

I've started mine at -12F before with NO block heater and it had sat for over 14 hours at that temp. Took about 10ish seconds of cranking after a 25-30 second glow. My engine rocks. :D Right now its about 12F outside, it fires a cylinder on the first rotation and is running in less than 2 seconds after a 20 second glow. It starts BETTER now than when I got it 70,000 miles ago. I attribute it to 55k on synthetic oil.

vwnate1 12-17-2008 12:41 AM

Remember To Follow
 
The factory extreme cold start drill :

pump the acellerator twice then hold to floor (someone PLEASE tell me how this helps ?!)

Cycle the glow plugs twice then crank the engine but DO NOT LET OFF THE KEY untill all 5 cylinders are firing and it'll start every time , first time .

When the car was new there was a red cradboard tag with all the extreme cold starting drill info on it..

Skippy 12-17-2008 12:46 AM

Last winter the 300D started at 8 or 9 F just like it was a warm day. The 240 was starting with difficulty down into the high teens and that was the coldest I tried it. It's supposed to get down to 9 tonight, and I'd like to drive the 240 to work tommorow. Lately, it's been having battery/slow drain issues that my multimeter refuses to measure, so I'm off to Wally World to get an extension cord so I can use the block heater.

jross 12-17-2008 12:49 AM

Quote:

Originally Posted by vwnate1 (Post 2052045)
The factory extreme cold start drill :

pump the acellerator twice then hold to floor (someone PLEASE tell me how this helps ?!)

I think that's supposed to help prime the IP?

TylerH860 12-17-2008 12:56 AM

Mine starts normally, it was probably about 15 degrees in my garage, except I forgot to put in the lighter oil weight this time, so it needs a little gas right off the bat to keep turning.

JimmyL 12-17-2008 01:16 AM

The coldest mine start is around 30 degrees. Mainly because I refuse to live anyplace that gets colder than that.......:earmuffs:

GregoryV022 12-17-2008 01:20 AM

i was in tahoe, and it started right up after two glow cycles, i estimated minus 2 degrees F

rcounts 12-17-2008 02:33 AM

Dunno, but she started pretty much normally (a couple of stumbles) almost the first rev after 2 glow cycles at 20-something on Sunday...

We've had ice on the streets since Friday, so the 300CD is staying home and I'm driving my Jeep 'til the roads are all clear.

I'm not taking ANY chances with some numb-nutz who doesn't know how to drive in bad weather plowing into me and totaling my Benz!

Unfortunately, between the rarity of snowy weather, and the excess number of California transplants, we have a LOT of people around here who have no clue about how to drive in snowy/icy conditions

bgkast 12-17-2008 02:37 AM

It's 22 now, my 240D started, but my SD would not with out plugging in. I did have a glow plug out in the SD though...

compu_85 12-17-2008 03:36 AM

Last time I started my SDL it was 18*F outside, and it started like it was 60 :D

A moment of silence while we wait for the glow plugs...

-Jason

hey_allen 12-17-2008 05:07 AM

Even jumping the battery for extra charging, my SD refused to start at all @ 35 F a few days ago. Then again, the engine has been showing signs of extreme amounts of blow by, so low compression isn't helping at all!

On the other hand, the parts car that I bought for an engine, I'd never had it cranked up since I bought it until the day the SD didn't want to play, and it cranked up in 5 seconds flat, with a short glow cycle to boot.

(I *really* need to get around to swapping the engines...)

captainmonk 12-17-2008 05:14 AM

last winter the sdl started in zero degree weather with one glow plug out no block heater This year who knows the 18 year old hasnt called so I guess it starts

daw_two 12-17-2008 06:53 AM

last winter...........Candy started when it was 8 degrees. That temperature is too cold for any Elvis sightings. It doesn't normally get that cold here.....but maybe once ever 3 years. Anyway, Candy never spent a night in the garage and hadn't been started in like a week.

One full glow cycle (wait for the relay to go "glunk"); turn key off, then back on.......20 seconds later, starts on all 5 cylinders like it was 60F out.


Speaking of cold starts, I've "fixed" the rough starting on Coda. I have instructed the "driver" that they need to wait longer in the glow cycle before cranking; waiting until the light goes off is not long enough when she has sat outside or all day (no lunch) at the office. Last night, it was about 29 when I left the office and I didn't wait for the "glunk", but waited past the light going out and she started better.

Simpler=Better 12-17-2008 08:11 AM

Quote:

Originally Posted by Actros617 (Post 2051991)
first crank 2 cylindes will start firing, 5-6 second later 3 cylinders will be firing, about 3 seconds later 4 cylinders is firing, than it runs like crap about 3 second then all 5 cylinders fires up, this is what i am experiencing every time when it drops near single digit numbers...By the way i love it when diesel struggles to start but i hate it if it can't start :mad:...

Reminds me of a gas tractor we had that got water in the exhaust. (Summer)Start with ether, firing on only one. We let it sit in the driveway for about half an hour, every couple minutes you could hear another cylinder start to fire:)

On topic, I can cold start down to -20*F(Haven't owned it in colder weather to find out) If that #1GP goes though, she's only good down to 50*F


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