Why is the intake valve cleaner in a direct injection engine?
This leads to uneven idle, poor acceleration, and lowered fuel economy. Direct-injected engines have an even higher rate of intake valve carbon buildup due to the fact that fuel never washes over the back of the valve to help clean the deposits. Carbon builds up much faster on GDI (Gasoline Direct Injection) engines.
Do you need to clean intake valves in GDI engines?
Carbon builds up much faster on GDI (Gasoline Direct Injection) engines. In as few at 5,000 miles, your GDI engine could have significant buildup on the intake valves. Don’t worry too much, however, as this does not require rebuild. You just need to clean the inside of your engine with an intake valve cleaner.
Do you need to rebuild an intake valve?
Don’t worry too much, however, as this does not require rebuild. You just need to clean the inside of your engine with an intake valve cleaner. Unlike cleaners that you pour in your fuel tank, CRC GDI IVD® Intake Valve & Turbo Cleaner does not get diluted in the fuel.
What causes carbon buildup on the intake valve?
Direct-injected engines have an even higher rate of intake valve carbon buildup due to the fact that fuel never washes over the back of the valve to help clean the deposits. Carbon builds up much faster on GDI (Gasoline Direct Injection) engines. In as few at 5,000 miles, your GDI engine could have significant buildup on the intake valves.
What causes a bent intake valve push rod?
If the intake valves push rod is bent the valve has come into contact with the piston and is very likely bent. If a valve has been adjusted with an incorrect clearance (too much clearance) or opened up over time due to a loose lock nut.. It can lead to piston/valve contact which will bend the valve.
Why do I need to clean my intake valve?
There has been much discussion about carbon buildup on the valves due to the nature of the direct injection engine, so I decided to purchase some CRC Intake Valve cleaner. As others have stated, the person who designed the engine cover should be fired. There was no reason to make the intake hose an integral part of the cover.
Why are my intake valves dirty after 80K miles?
An example of direct injection. That being said, Carbon from the EGR (Exhaust Gas Recirculation) system and oil from the PCV (Positive Crankcase Ventilation) have free reign to cake your valves. Figure above is an example of a dirty valve after approx. 80k Miles with no EGR delete or OCC.
Why does oil stick to the intake valve?
Often, carbon deposits are, the result of a rich fuel mixture. It can also be, the result of, oil passing through a worn valve guide. So, oil is pulled through the intake valve guide and into the combustion chamber, where it’s burned. But, on the exhaust side, a worn valve guide, can allow oil to sit on the valve and form deposits.