2003 HCH knock retard question.
#1
2003 HCH knock retard question.
Has anyone with an advanced scan tool ever checked out their knock retard while driving? Mine indicates knock consistently when I'm accelerating at anything other than barely on the throttle.
I don't know if this is just a normal behavior on this model engine or if there's actually a problem I should be chasing down.
I do realize that on most cars there's generally no KR while driving except under perhaps extreme acceleration or if there's other issues but I have had cars in the past where bursts of knock retard were pretty normal
Anyone with experience feel free to chime in!
EDIT: Here's what I have done to the car in the last few days. All new spark plugs, cleaned egr ports, oil change and a CVT oil change. The air filter looks fine.
When I picked the car up a few days ago it was running on 3 cylinders. I pulled the valve cover and found cylinder #3 rocker idler thing broken. I put a used one on and it runs nice now.
109k miles.
I don't know if this is just a normal behavior on this model engine or if there's actually a problem I should be chasing down.
I do realize that on most cars there's generally no KR while driving except under perhaps extreme acceleration or if there's other issues but I have had cars in the past where bursts of knock retard were pretty normal
Anyone with experience feel free to chime in!
EDIT: Here's what I have done to the car in the last few days. All new spark plugs, cleaned egr ports, oil change and a CVT oil change. The air filter looks fine.
When I picked the car up a few days ago it was running on 3 cylinders. I pulled the valve cover and found cylinder #3 rocker idler thing broken. I put a used one on and it runs nice now.
109k miles.
Last edited by firehawk618; 07-19-2020 at 05:36 PM.
#3
Re: 2003 HCH knock retard question.
Great response.
I did pull the plate / valve and clean everything out a few days ago. Holy smokes they were cruddy / clogged!}
I will update the original post with what I have done in the last few days on the car.
I did pull the plate / valve and clean everything out a few days ago. Holy smokes they were cruddy / clogged!}
I will update the original post with what I have done in the last few days on the car.
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