2010 6.7 hesitates

[savoy]

At highway speed no hesitation - however when starting from a dead stop, the truck will sporadically hesitate - just started this today.

I have had an EGR code for over a year - and was told if the valve is stuck all the way open, it will act like an EGR delete.

I am thinking the valve has closed somewhat and is possibly affecting acceleration.

Thoughts

 

[danoday]

I know it's obvious but plugs and plug wires.

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[savoy]

Good point thanks.

I have been fixated on the EGR possibility - hadn't considered the plugs and wires

 

[mtnrider]

Good point thanks.

I have been fixated on the EGR possibility - hadn't considered the plugs and wires

Do you have a 6.7 Diesel as listed in your signature? If so you don't have plugs and wires.

Also if your EGR valve is stuck open it will not act like a EGR delete, actually just the opposite. It will be recirculating all the time.
If you have codes you really should get them sorted out then see where you stand.

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[savoy]

Yup - 6.7.

I did check to see if I had missed something over the years - did see there aren't plugs for the truck.

I'll replace the egr - something I should hade done already.

Thank you for your comments - helpful

 

[danoday]

Yup - 6.7.

I did check to see if I had missed something over the years - did see there aren't plugs for the truck.

I'll replace the egr - something I should hade done already.

Thank you for your comments - helpful

My bad., I didn't catch the diesel. But I would still chase fuel air and spark to start with.

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[mtnrider]

My bad., I didn't catch the diesel. But I would still chase fuel air and spark to start with.

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There is no spark in a diesel......


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[danoday]

There is no spark in a diesel......


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Tracking... it's just a term meaning start with basics as they apply.

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[danoday]

At highway speed no hesitation - however when starting from a dead stop, the truck will sporadically hesitate - just started this today.

I have had an EGR code for over a year - and was told if the valve is stuck all the way open, it will act like an EGR delete.

I am thinking the valve has closed somewhat and is possibly affecting acceleration.

Thoughts

I would assume since you have the egr codes for over year you have had the codes diagnosed?
Have you tried cleaning the valve and check for air leakage?

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[savoy]

I've cleaned it a couple times. It's either the solenoid or the spring in the valve inside the EGR - they are the only 2 moving parts from what I can see.​

I will get them both checked and replace whatever is needed - probably the whole EGR​

 

[danoday]

I've cleaned it a couple times. It's either the solenoid or the spring in the valve inside the EGR - they are the only 2 moving parts from what I can see.​

I will get them both checked and replace whatever is needed - probably the whole EGR​

Get your codes checked it possible it could be a sensor. If the egr spring is weak it could leak air as well. Maybe clean the tube that connects to the egr also..good luck.

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[savoy]

Will do and thanks