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Knocking on cold start

Tiny
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Wow.
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Monday, April 4th, 2022 AT 4:05 PM
Tiny
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If I could jump and go back to the EGR valve.

If it is gone, I wonder if there is excessive carbon being passed into the intake system.

Roy
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Tuesday, April 5th, 2022 AT 9:06 AM
Tiny
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The intake is new and when I replaced it I checked all the valves all super clean.
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Tuesday, April 5th, 2022 AT 9:22 AM
Tiny
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I am talking about the other side of the valve. That is where the carbon comes from.

Roy
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Tuesday, April 5th, 2022 AT 5:28 PM
Tiny
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Pipe cleaned, only thing left is the EGR.
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Tuesday, April 5th, 2022 AT 5:40 PM
Tiny
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This sounds like carbon in the cylinders causing this issue. There may be some restrictions on the operation of the valve. Otherwise, the timing may be too far advanced causing detonation.

Roy
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Tuesday, April 5th, 2022 AT 7:53 PM
Tiny
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Valves are super clean. I checked the bores and also found no issues. Timing usually has some indications such as continuous rough idle not just morning or random misfires.
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Tuesday, April 5th, 2022 AT 8:13 PM
Tiny
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I attached the mark location for you to view.

I would check your marks to be sure and not assume they are correct.

Roy
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Wednesday, April 6th, 2022 AT 4:29 AM
Tiny
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We checked the timing and it's perfect. We just removed the cooler and erg. Here are pictures of inside the erg and inside cooler, both have lots of build up.
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Wednesday, April 6th, 2022 AT 10:39 AM
Tiny
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Wow, that is loaded with carbon. I would replace that valve and start with new.

Roy
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Thursday, April 7th, 2022 AT 3:49 AM
Tiny
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Car is 90% better after cooler, erg and intake were replaced. Still get misfire 1 every once in a while. I looked in the pore and I see it wet, gas, not water. Is this possibly a leaky injector?
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Saturday, April 16th, 2022 AT 4:12 PM
Tiny
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If it is fuel, you should be able to smell it. But a leaky injector can cause your start up misfire also.
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Saturday, April 16th, 2022 AT 5:00 PM
Tiny
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All solved. Fuel injector cleaner in the tank and its 100% normal.
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Tuesday, April 26th, 2022 AT 6:23 PM
Tiny
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Glad to hear all is good.

Roy
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Thursday, April 28th, 2022 AT 4:30 AM

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