Hard to start when cold. - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 7 (permalink) Old 12-07-2009, 04:06 PM Thread Starter
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Hard to start when cold.

Ok so recently have had a cold spell here in WA, about 20-30 degrees. Went to start truck this morning and took about 5 min, I cycled pre heater every time when it finally started it ran real rough for about 30sec to 1 min. After that no issues. Now I am guessing it is probably the obvious JUST THE COLD. Granted I also did not plug her in cus I have never had these issues before. However I have never ran the truck in this cold of weather, since installing my air dog 100. Some further info when it ran rough was smoking alot etc till it warmed up a bit. After about 1 min of running shut off and it fired right up. No codes using the key trick. Also further info, I have a fairly new IP from Industrial I installed this summer, Air Dog 100 lp, and a fuel gauge set up just like moparmans at the ip for the pressure. During start and run fp was at 13-15, the entire time. Also I have not winterized my fuel at all yet. So go ahead and let me know what ya think and suggestions, also I think I have an air leak at the manifold from where I took off the old fuel filter, or maybe one at the sending unit from the air dog. I am winterizing fuel today and plugging in tonight, but I cant plug in at work and had starting issues at work yesterday (High temp of 31), it only took 3 tries yesterday at work though. Allright thanks for your help.

01 2500, quad cab, 2wd, auto, 132k, turbo rebuilt good as new by htt , and 0216 code for 1 1/2 years now. Airdog 100 fuel system after 3 stock lift pumps.
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post #2 of 7 (permalink) Old 12-07-2009, 06:35 PM
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Hi I dont think you should need to plug it in. I never have plugged mine in since new and fires up fine in -0. Although I would recommend running the fuel back threw the stock filter housing because there is a heater in there just dont put the filter itself back in the housing. Or your intake heater is not working right good luck

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post #3 of 7 (permalink) Old 12-09-2009, 04:19 AM Thread Starter
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Cool ya I just winterized the fuel, we usually don't get this cold of temps. I plugged her in last night and she fired right up without skipping a beat. Leaving work were I can't plug in is another issue entirely, but not nearly as bad as in the morning without plugging in. I think I might eventually put an inline heater rather than use the old fuel filter canister. What do you think about using the old fuel filter canister MoparMan?

01 2500, quad cab, 2wd, auto, 132k, turbo rebuilt good as new by htt , and 0216 code for 1 1/2 years now. Airdog 100 fuel system after 3 stock lift pumps.
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post #4 of 7 (permalink) Old 12-09-2009, 06:34 AM
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Are you absolutely sure your grid heater is working? I know that mine will start without the grid hooked up down to about 40 degrees and you can't tell the difference (long story ). I'm betting yours is starting off compression heat only, if it's cackling and grumbling about it at 20 above.
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post #5 of 7 (permalink) Old 12-09-2009, 06:05 PM
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When it is cold, you do not want to just keep cranking and cycling the grid heater on and off, you can overheat the grid heater, and the starter. I lived in the north for a long time, the best way to start a diesel, without either, and you really can damage an engine severely with either, is to cycle the start aid, then crank for 15 seconds if it does not start, wait for 1 minute, and do it again. If you keep cranking the fuel that is injected just cools the cylinder down, waiting allows the fuel to warm in the cylinder and fire when you crank it the second time. It does work, If it is below freezing, and you have the ability, plug it in, even for a short time, it helps and I leave mine plugged in after it starts till I leave, Never longer than 1 minute.

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post #6 of 7 (permalink) Old 12-10-2009, 11:15 PM
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You should no have to plug in a t 20-30 degrees, must be somthing else, was it a slow crank? How are your batts? I dont plug mine in unless its below 5 and then i plug it in for a bout a hour never had any issues yet.

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post #7 of 7 (permalink) Old 12-12-2009, 04:03 PM Thread Starter
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Quote:
Originally Posted by Johnp3 View Post
When it is cold, you do not want to just keep cranking and cycling the grid heater on and off, you can overheat the grid heater, and the starter. I lived in the north for a long time, the best way to start a diesel, without either, and you really can damage an engine severely with either, is to cycle the start aid, then crank for 15 seconds if it does not start, wait for 1 minute, and do it again. If you keep cranking the fuel that is injected just cools the cylinder down, waiting allows the fuel to warm in the cylinder and fire when you crank it the second time. It does work, If it is below freezing, and you have the ability, plug it in, even for a short time, it helps and I leave mine plugged in after it starts till I leave, Never longer than 1 minute.
Ya I wasn't just cranking, I am well aware of the intervals for cranking on the engine and what it can do to the starter. Ya I just plug it in now no issues fires up instantly.

Ya there is no issue with the truck, I figured thanks to yall enlightening me that it was due to their being no inline fuel heater anymore, due to airdog. Also maybe I should have clarified better but temps were single digit in the mornings. Also I already checked my grid heater, first thing, it was working as it should. Thanks for the replies guys. I guess I went into panic mode for a sec thinking the excessive smoke and rough idle was a vp44 issue, cus that is what had happened when the vp died before.

01 2500, quad cab, 2wd, auto, 132k, turbo rebuilt good as new by htt , and 0216 code for 1 1/2 years now. Airdog 100 fuel system after 3 stock lift pumps.
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