Rough idle at start-up
#1
#3
#4
Here is the latest.......
Dealership tested the GP's and the GP relay, all good.
Found number 8 injector bad, replaced and cleaned the other 7, also did a compression test, compression good..
Got it back, same problem, back to the dealership.
Dealer replaced ICP sensor. Next cold start, same problem.
Can anyone PLEASE help steer me in the right direction as to what this problem could be. I'm at my wits end!
David
Dealership tested the GP's and the GP relay, all good.
Found number 8 injector bad, replaced and cleaned the other 7, also did a compression test, compression good..
Got it back, same problem, back to the dealership.
Dealer replaced ICP sensor. Next cold start, same problem.
Can anyone PLEASE help steer me in the right direction as to what this problem could be. I'm at my wits end!
David
#5
#6
Does this sound the 5-40 Rotella synthetic will cure my problem? I'm a little curious what this could be caused from, I have used the Motorcraft 5-40 conventional oil since it was new and I have 196k on it now. Thanks, David
#7
Trending Topics
#8
I put my test light on the load side of the GPR to see how long it is energized. I checked it twice and both time it stayed on for 35 seconds, so, when I cranked the truck the next time I paid no attention to the dash light and waited 35 seconds before I started the truck but got the same result. Rough idle and white smoke. This would indicate that the GPR is ok, correct? David
#9
Not sure if this would help all that much but have you tried cycling your glow plugs a couple times before firing up the truck?
From my understanding, white smoke on ignition comes from unburnt fuel. There is a good chance your engine is surging cause of the cold, mine does that too some mornings.
My $.02, find a GOOD diesel mechanic in your town and stop going to the dealership. They'll @#$@#$*@&#$(*&# you all day long. I've never heard of a dealership that has the customer's best interest in mind. A local small shop with a good owner might be the other way around.
From my understanding, white smoke on ignition comes from unburnt fuel. There is a good chance your engine is surging cause of the cold, mine does that too some mornings.
My $.02, find a GOOD diesel mechanic in your town and stop going to the dealership. They'll @#$@#$*@&#$(*&# you all day long. I've never heard of a dealership that has the customer's best interest in mind. A local small shop with a good owner might be the other way around.
#12
It's a rough idle, very choppy, it lasts for about 10 - 12 seconds. After the first 2-3 seconds of the choppy idle I get white smoke from the tail pipe. Once the rough idle stops the white smoke stops. On a warm restart, no rough idle, no smoke, it only occurs after the truck sits and gets cold.
Does this sound the 5-40 Rotella synthetic will cure my problem? I'm a little curious what this could be caused from, I have used the Motorcraft 5-40 conventional oil since it was new and I have 196k on it now. Thanks, David
Does this sound the 5-40 Rotella synthetic will cure my problem? I'm a little curious what this could be caused from, I have used the Motorcraft 5-40 conventional oil since it was new and I have 196k on it now. Thanks, David
You be amazed how the Rotella 5 -40 Synthetic smooths cold start ups and idle characteristics.
It definitely would not hurt to put that in next oil change.
As far as what else it could be, i would lean towards the GPR as others are saying too. WHen mine when bad it would pump out white smoke when trying to start then slowly go away as it got warm. Definitely would switch that out first since honestly that is the most common problem. Its very cheap and take 10 minutes to switch.
#14
#15