I’ve looked far and wide online for pictures showing the condition of the intake valves with regards to carbon buildup as mileage adds up. I changed my spark plugs and boots and threw a scope into each cylinder and was finally able to obtain pics of the intake valves, crosshatching, and pistons. Hopefully, this will help others with this concern as I have been unable to find pictures anywhere else online.
I was honestly surprised at how clean the valves were. Crosshatching looks like a brand new engine to me and I’ve never seen pistons/combustion chambers that clean! I’m not worried about fuel dilution after seeing my engine’s crosshatching. I use nothing but 93 octane top tier fuel. I’m tuned with a Ktuner stage 2. Have been for about 50k miles. Also, all oil changes are with Pennzoil Platinum or Ultra (if I can get it) 0w-20 or 5w-30 at about 30% oil reading on maintenance minder.
As a side note, any comments on the black spots at the head/block head gasket junction… pics 7, 8,and 9? I know these 1.5T engines blow head gaskets around 90k frequently. I’m hoping it is just carbon buildup as I would think if it was coolant, that spot would be clean. Like a steam clean. But there is almost no carbon anywhere else, which is puzzling. Any opinions? Hoping some mechanics could weigh in on those carbon deposits or possible head gasket issues.
Again, I hope this helps others as carbon buildup and fuel dilution issues have been a hot topic of discussion with these Direct Injection motors with no visual evidence to prove or disprove their existence.
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I was honestly surprised at how clean the valves were. Crosshatching looks like a brand new engine to me and I’ve never seen pistons/combustion chambers that clean! I’m not worried about fuel dilution after seeing my engine’s crosshatching. I use nothing but 93 octane top tier fuel. I’m tuned with a Ktuner stage 2. Have been for about 50k miles. Also, all oil changes are with Pennzoil Platinum or Ultra (if I can get it) 0w-20 or 5w-30 at about 30% oil reading on maintenance minder.
As a side note, any comments on the black spots at the head/block head gasket junction… pics 7, 8,and 9? I know these 1.5T engines blow head gaskets around 90k frequently. I’m hoping it is just carbon buildup as I would think if it was coolant, that spot would be clean. Like a steam clean. But there is almost no carbon anywhere else, which is puzzling. Any opinions? Hoping some mechanics could weigh in on those carbon deposits or possible head gasket issues.
Again, I hope this helps others as carbon buildup and fuel dilution issues have been a hot topic of discussion with these Direct Injection motors with no visual evidence to prove or disprove their existence.
