Rough idle at start-up
Senior User
Joined: Dec 2005
Posts: 111
Likes: 0
My truck used to do this. Ended up being #1 injector. Problem was, it took nearly 2 years to find the injector, because everytime they ewent to test for it the truck was either warm or had been sitting inside the shop and just warm enough not to do it. Finally one snowy day, the truck had been at the shop all day, outside. I went to pick it up, started, and it was romping. Immediately shut it off, got a mechanic, and finally found the culprit injector.
Ron W.
Ron W.
Thread Starter
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Tuned
Joined: Jan 2004
Posts: 473
Likes: 13
From: Hickory, North Carolina
Thanks Bushman. The period of time I'm having the problem is so short the Tech is having a hard time finding a fault. He did find the #8 bad and replaced it but so far...... all the others check good. David
Senior User
Joined: Dec 2005
Posts: 111
Likes: 0
Same with me, I just got lucky that one day when it finally did it at the shop. Like I said, it literally took about 2 years to finally get it. Maybe you should have it sit at a shop, outside, overnight. Then first thing in the morning, have them plug in the scanner, start the truck, and scan it. Hopefully, this way the truck will be doing its bit while being scanned, and they might catch what is going on. On my truck, #1 injector was sticking until it warmed up just enough.
Ron W.
Ron W.
Cargo Master
Joined: Oct 2009
Posts: 2,500
Likes: 14
From: South Carolina
I am being nosey. How much did the dealership charge?
It always interests me the bill that is charged even though the problem is not fixed.
I see the start problem as a cool weather issue. Since it bothers you, switch to the synthetic oil as suggested.
This thread may be of interest to you.
https://www.ford-trucks.com/forums/1...6-and-omg.html
It always interests me the bill that is charged even though the problem is not fixed.
I see the start problem as a cool weather issue. Since it bothers you, switch to the synthetic oil as suggested.
This thread may be of interest to you.
https://www.ford-trucks.com/forums/1...6-and-omg.html
Thread Starter
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Tuned
Joined: Jan 2004
Posts: 473
Likes: 13
From: Hickory, North Carolina
I am being nosey. How much did the dealership charge?
It always interests me the bill that is charged even though the problem is not fixed.
I see the start problem as a cool weather issue. Since it bothers you, switch to the synthetic oil as suggested.
This thread may be of interest to you.
https://www.ford-trucks.com/forums/1...6-and-omg.html
It always interests me the bill that is charged even though the problem is not fixed.
I see the start problem as a cool weather issue. Since it bothers you, switch to the synthetic oil as suggested.
This thread may be of interest to you.
https://www.ford-trucks.com/forums/1...6-and-omg.html
Also, I read the entire post that you linked, I appreciate it. I'm so confused at this point I don't know what the problem is........
Cargo Master
Joined: Oct 2009
Posts: 2,500
Likes: 14
From: South Carolina
Give us a little more info.
How many miles on the odometer? How long have you owned it?
How many miles have you put on it?
Do you run straight diesel? Is winter diesel available in your area yet?
Do you perform any of your own repairs/maintenance?
Try adding 10% K1 at your next fill-up. That will be similar to winter diesel.
You may have to dispense it into a fuel container then pour into the truck later.
Since the GP's have been checked, the K1 is my next choice. Pour in at least 3 gallons. I believe you are OK going up to 30% by volumn.
How many miles on the odometer? How long have you owned it?
How many miles have you put on it?
Do you run straight diesel? Is winter diesel available in your area yet?
Do you perform any of your own repairs/maintenance?
Try adding 10% K1 at your next fill-up. That will be similar to winter diesel.
You may have to dispense it into a fuel container then pour into the truck later.
Since the GP's have been checked, the K1 is my next choice. Pour in at least 3 gallons. I believe you are OK going up to 30% by volumn.
Thread Starter
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Tuned
Joined: Jan 2004
Posts: 473
Likes: 13
From: Hickory, North Carolina
Give us a little more info.
How many miles on the odometer? 196k
How long have you owned it? Since new
How many miles have you put on it? 196K
Do you run straight diesel? Yes
Is winter diesel available in your area yet? No, not to my knowledge
Do you perform any of your own repairs/maintenance? Yes to maintenance and minor repairs
Try adding 10% K1 at your next fill-up. That will be similar to winter diesel.
You may have to dispense it into a fuel container then pour into the truck later.
Since the GP's have been checked, the K1 is my next choice. Pour in at least 3 gallons. I believe you are OK going up to 30% by volumn.
How many miles on the odometer? 196k
How long have you owned it? Since new
How many miles have you put on it? 196K
Do you run straight diesel? Yes
Is winter diesel available in your area yet? No, not to my knowledge
Do you perform any of your own repairs/maintenance? Yes to maintenance and minor repairs
Try adding 10% K1 at your next fill-up. That will be similar to winter diesel.
You may have to dispense it into a fuel container then pour into the truck later.
Since the GP's have been checked, the K1 is my next choice. Pour in at least 3 gallons. I believe you are OK going up to 30% by volumn.
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Cargo Master
Joined: Oct 2009
Posts: 2,500
Likes: 14
From: South Carolina
We are both in SC. In my upstate area the temps have already been in the mid 30's.
The purpose in adding the K1 is to thin the diesel and make it easier to burn. (Example-Mercedes recommends this in their owners manuals.)
I suspect your temps have been low enough to cause hard starting.
If adding K1 allows easier starts then you are still running warm weather fuel blends and as the supplier shifts to cool weather blends the start-up issue will go away.
**I adjusted my fuel blend in september as the temps started cooling down.
I run 100% vo much of the year. When temps start dipping below 70° my truck begins to start and respond differently.**
The purpose in adding the K1 is to thin the diesel and make it easier to burn. (Example-Mercedes recommends this in their owners manuals.)
I suspect your temps have been low enough to cause hard starting.
If adding K1 allows easier starts then you are still running warm weather fuel blends and as the supplier shifts to cool weather blends the start-up issue will go away.
**I adjusted my fuel blend in september as the temps started cooling down.
I run 100% vo much of the year. When temps start dipping below 70° my truck begins to start and respond differently.**
Thread Starter
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Tuned
Joined: Jan 2004
Posts: 473
Likes: 13
From: Hickory, North Carolina
Thanks for the info David, I am in Florence and I'm not sure what's going on with my truck but it is darn sure frustrating, I'll try the K1 and see what result I get. Although I will say my truck does this even when it was well above 70. I may try to get some video of the event and post it. I sincerely appreciate you and others trying to help me.
Here is whats been done:
#8 injector replaced
completed injector cleaning service
Cylinder contribution test ??
Fuel pressure tested, OK
Fuel vacuum tested, OK
GP test, OK
GPR test, OK
fuel filter changed at my request (I normally do this)
oil and filter change at my request (I normally do this)
Second injector cleaning service
Compression test, OK
ICP sensor replaced.
The event occurs for such a short period of time the Tech says he's having a hard time finding anything on the cylinder contribution test.
David
Here is whats been done:
#8 injector replaced
completed injector cleaning service
Cylinder contribution test ??
Fuel pressure tested, OK
Fuel vacuum tested, OK
GP test, OK
GPR test, OK
fuel filter changed at my request (I normally do this)
oil and filter change at my request (I normally do this)
Second injector cleaning service
Compression test, OK
ICP sensor replaced.
The event occurs for such a short period of time the Tech says he's having a hard time finding anything on the cylinder contribution test.
David
Thread Starter
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Tuned
Joined: Jan 2004
Posts: 473
Likes: 13
From: Hickory, North Carolina
Here is a vid of a start-up. It's near impossible to tell about the rough idle in the video but it is very evident sitting in the truck. As I mentioned before it only last about 10 seconds. The outside temp at this start-up was 58*.
YouTube - MOV02066
YouTube - MOV02066
Senior User
Joined: Oct 2010
Posts: 217
Likes: 0
From: Rineyville, KY
I had the same problem. Replaced gpr and still the same. replaced the glowplugs and it fixed the problem. Mine was a little worse than yours seems to be. I had 3 gp bad, the tip on two of them were cracked.
Thread Starter
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Tuned
Joined: Jan 2004
Posts: 473
Likes: 13
From: Hickory, North Carolina
Thanks tritonman, is there a procedure somewhere that anyone know of for checkin/replacing glow plugs? I've never done it and can't afford the dealership any longer. David
Cargo Master
Joined: Oct 2009
Posts: 2,500
Likes: 14
From: South Carolina
I do wonder about the glow plugs, so this picture link from another member might help.
Glow Plug Install 10-10 pictures from trucks photos on webshots
Glow Plug Install 10-10 pictures from trucks photos on webshots