Rough Starting in Cold

[stock]

Hey Guy's, I just had my mechanic replace the passanger side glow plugs as 2 of the 4 were dead on that side. I thought this would solve my rough starts in the morning, but it does not have seem to helped to much. It seems to smoke less which to me indicates the glow plugs are working, but I am wondering if a weak fuel pump or weak HPOP would cause rough starts when cold? Any ideas. I still think because it starts good when warm, that maybe the left bank of glow pugs needs to be replaced as well. I thought the mechanic would have mentioned this when he completed the checks? He did mention he may check the IPR which do not know what that satnds for?

[Justin@DP-Tuner]

Originally Posted by stock

Hey Guy's, I just had my mechanic replace the passanger side glow plugs as 2 of the 4 were dead on that side. I thought this would solve my rough starts in the morning, but it does not have seem to helped to much. It seems to smoke less which to me indicates the glow plugs are working, but I am wondering if a weak fuel pump or weak HPOP would cause rough starts when cold? Any ideas. I still think because it starts good when warm, that maybe the left bank of glow pugs needs to be replaced as well. I thought the mechanic would have mentioned this when he completed the checks? He did mention he may check the IPR which do not know what that satnds for?

Is it smoking white on these hard starts? Did he check the GPR?

Also, it is beneficial to just replace all of the GP's at once. The others will eventually go out and you will have to do the same job 8 more times.

[jermcd]

Do you keep it plugged in at night?

[empiretc]

How is your GPR? Does it start fine if you plug it in for a little bit?

[blue99stroker]

bet your glow plug relay (GPR), is toast.
if not check oil level, icp sensor or IPR sensor.

oh and check your batteries and make sure they are in good shape. they must be atleast 875 CC amps

[jays big blue]

Mine hard starts below 25 degrees if I dont plug it in. More the romps than a hard start. When my gpr went out it was still summer, got progressively worse...quick. Super easy to change. Stancor or a 25$ one from napa...#GPR-110

[blue99stroker]

i run the stancor glow plug relay and it works great.

[floorboy]

I just put a stancor on and mine quit puffing smoke on cold starts.

[ScottyP5947]

x2 on the relay. Shouldn't have to plug it in unless it's REALLY REALLY cold.
When I ran 15-40, I got the 'romps' too below 35 degrees. Synthetic cured that.
Romp/lope video =

7.3 Powerstroke 25 degree cold start - lope on startup - YouTube

7.3 Powerstroke 25 degree cold start - lope on startup - YouTube

Good luck!

Scott

[jacobford]

X2 on the stancor relay... I think mine was like 40 bucks and was here in a couple days... I get just a puff of white smoke at 15 degrees on start-up... also changing to synthetic helped immensely, I run Rotella T-6 from Wal-Mart, and throw in a bottle of the white Power Service fuel additive every tank as well... good glow-plugs, and a good relay it should start just fine down to single digit temps... although I do plug mine in if I can under 20 degrees...