Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - 2000 Metro cold start problem: missing, backfiring, stalling

MetroMPG · 07-26-2018, 12:18 PM

Would either of these problems explain the occasional backfiring when I'm nursing the engine along by pumping the throttle?

Bad MAP / open loop could cause dumping excess fuel in the TB.

Bad distributor would mean no spark, accumulating unburnt fuel in the affected cylinder/s.

07-26-2018, 12:18 PM	#5 (permalink)
MetroMPG Batman Junior Join Date: Nov 2007 Location: 1000 Islands, Ontario, Canada Posts: 22,530 Blackfly - '98 Geo Metro Team Metro Last 3: 70.09 mpg (US) MPGiata - '90 Mazda Miata 90 day: 54.46 mpg (US) Even Fancier Metro - '14 Mitsubishi Mirage top spec 90 day: 70.75 mpg (US) Appliance car Mirage - '14 Mitsubishi Mirage ES (base) 90 day: 62.14 mpg (US) Thanks: 4,078 Thanked 6,978 Times in 3,613 Posts	Would either of these problems explain the occasional backfiring when I'm nursing the engine along by pumping the throttle? Bad MAP / open loop could cause dumping excess fuel in the TB. Bad distributor would mean no spark, accumulating unburnt fuel in the affected cylinder/s. __________________ Project MPGiata! Mods for getting 50+ MPG from a 1990 Miata Honda mods: Ecomodding my $800 Honda Fit 5-speed beater Mitsu mods: 70 MPG in my ecomodded, dirt cheap, 3-cylinder Mirage. Ecodriving test: Manual vs. automatic transmission MPG showdown EcoModder has launched a forum for the efficient new Mitsubishi Mirage www.MetroMPG.com - fuel efficiency info for Geo Metro owners www.ForkenSwift.com - electric car conversion on a beer budget