Hey Scotty. I have a 2014 Honda Accord EX with the GDI engine. Just learned about the carbon buildup issue on the intake valves recently thanks to your channel, so I decided to clean the valves using…

Littlebitcountry

Hey Scotty. I have a 2014 Honda Accord EX with the GDI engine. Just learned about the carbon buildup issue on the intake valves recently thanks to your channel, so I decided to clean the valves using CRC intake cleaner. I hooked a clear PVC tube up to the brake booster inlet on the intake and used what I thought was all of the can from the driver’s seat while revving the engine to 2,000 rpm. I followed your instructions, let it bake in for an hour, then took it onto the highway. On the way to the highway it hiccuped a little (I assume because it was burning the carbon in the cylinder). After the one hiccup it drove fine and all was well.

Today I noticed I had a bit of the cleaner left in the can, as well as some in the clear tube, so I repeated the prior steps. This time, however, something different happened on the follow-up drive. Instead of one or two hiccups and then back to normal, the engine would just lose power anytime it hit 2500-3000rpm. I had a hard time getting it up to 20mph.

So I turned back and went home. I’m not an experienced mechanic at all, but I thought maybe the computer was keeping the car from revving too high, so once I was safe and back in my garage, I turned the car off, then restarted it and everything was back to normal.

So what happened? Was the car in some kind of safety mode keeping the car from ruining the engine somehow?