Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - Puzzle: vacuum leak, injector crud, or O2 sensor fail?

BabyDiesel · 05-03-2015, 03:59 PM

I have had a similar problem in my Escort. What I was told by one of the respected members at TeamZX2 was it is a vacuum leak. A bad MAF/MAP would cause + fuel trims. A vacuum leak causes - fuel trims. I think it is related to the EVAP on mine, or PCV lines. I know you have a Honda, but these are worth a shot considering our issues are similar.

05-03-2015, 03:59 PM	#4 (permalink)
BabyDiesel Lean Burn Cruiser! Join Date: Dec 2012 Location: Johnston County, NC Posts: 931 Big Blazin' - '88 Chevrolet K5 Blazer Silverado SUV 90 day: 14.97 mpg (US) Chili - '00 Honda Insight Gen-1 Insights Team Honda House of Tudor Team Streamliner 90 day: 72.29 mpg (US) Thanks: 835 Thanked 490 Times in 309 Posts	I have had a similar problem in my Escort. What I was told by one of the respected members at TeamZX2 was it is a vacuum leak. A bad MAF/MAP would cause + fuel trims. A vacuum leak causes - fuel trims. I think it is related to the EVAP on mine, or PCV lines. I know you have a Honda, but these are worth a shot considering our issues are similar. __________________ Remember, thank a fellow EM'er for a helpful post!!! I hypermile better in my cowboy boots Past threads: ZX2 modding thread Ecomodder's Top 10: How they do it! ZX2 Aerodynamics: Shooting for 0.15 Cd ZX2 coast-down testing for Cd & Crr