I've never adjusted my valves and I have 113,000 miles. I'm running a lil rich but my car seems to love it lol. I have a injen cai, weapon r header, stock b pipe to 2.25 inch straight back to the muffler. I just always keep up on my oil changes between 7500 to 10000 miles and only use Lucas full synthetic with 87 octane. I'm averaging 38-42 mpg with mixed driving. I put Techron or sea foam in every 7-10000 miles, and I also use my car for Uber, and people always tell me that my car feels peppy. Only thing I'm gonna change at 150000 is my spark plugs(ik22) and o2 sensors, and flush the radiator.

 

What method did you use to clean the EGR passages?

 

Take it on a 100-mile highway trip where you can set the cruise control and/or be able to keep it at 55-65 mph for long periods of time. Fill up before you start and fill up again at the end and try to be consistent in to what level you fill the tank (just get close to same level each time). That may help prove that the car is capable of MPG but your city-only driving is the cause of the low numbers. If crappy on the highway too, then you have to come back to the car, look for lots of tail pipe soot, check for leaky spark plugs, brakes dragging, etc - all crazy stuff. Much more fun to take a short trip.

 

@ChuckDustin Thanks for the tune-up summary.

@BxStreetFitted Someone recommended that I occasionally run my car gently at higher RPMs for a few miles to help clear intake valves. For sure you want a fully warmed up engine and to drive gently. That might be 5k RPM depending on the engine but regardless sure stay far away from the redline. Benefit might be psychological lol.

 

Why even change them at 150,000 miles? Just wait for them to eject out of the head. That's common at right about your mileage for neglected (no valve adjustment or plug changes) GE Fits.

 

I'll let you know what happens when I hit 150,000. My other GE went 320,000 and was still running good with no valve adjustments before I traded it in for a CRZ.

 

How'd you like the crz vs the fit. They're very similar cars but also very different.

Wish I had some aluminum crz lca in my fit 😊

 

Oh man, for economical purposes, the Fit hands down. For sporty looks and performance, the CRZ. Also the suspension geometry being similar to the Euro Civic Type R was pretty cool too. But I can't do Uber in a CRZ lol. I do however miss the low end torque of the CRZ. But for making money, the Fit is what wins for me.