Meraut

Hey guys, wondering what i should be checking out on my accord as its MPG has gone down as of late, i get maybe 20mpg in city(5MT) is this about right for all you guys or does it sound low? Wondering what maint i should do that could affect the MPG thanks in advance.

GhostAccord

How many miles on the engine?

What maintenance have you done recently?

What MPG were you getting before?


There are a few things you can try.

Basic maintenance
Spark plugs
Spark plug wires
Distributor Cap & Rotor
Fuel filter
Fuel injection cleaning
Air filter

Long Term Maintenance
Fuel pressure regulator (test)
O2 sensor
Valve adjustment
Timing and balance belts & tensioner
Water Pump (not a MPG issue but should be replaced when belts are done)

xkjnboix

would the egr ports / clogged EGR be a major MPG inhibitor as well ?

hondapal

I had the same problem and it turned out to be the spark plugs.

Meraut

Mileage is 432k on the engine atm, Ive recently done the plugs/wires, air filter, TB and WP combo. To my knowledge most things are still stock on the vehicle that i know of. So that being said what should i start at that costs the least money? I do plan on getting the valves adjusted at a later time next month.

Btownmills

Exhaust leak? Bad spark plugs? Tire pressure?

Meraut

Sparks looked good, tire pressure is up but i do have an exhaust leak that needs to be patched up. Other than that im not sure is the EGR has been cleaned ever, will that effect the MPG? I hear it wasnt that hard to do.

NZXTInerTia

EGR's on the 4th gens is a little more difficult that the 5th gens but it is possible and with a little technical know how you can do it. It will effect mileage, same with the basic and long term maintenance Ghost posted.