y is my civic getting terrible gas gas mileage
02-20-2009, 06:57 PM
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y is my civic getting terrible gas gas mileage
i have a 91 ef hatch with dpfi and i am getting very shitty gas milage like twenty miles a gallon thats terrible for a honda
02-20-2009, 07:23 PM
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Re: y is my civic getting terrible gas gas mileage
Because you have a heavy foot or a bad pcv valve or a dirty filter or a gas leak or someone is stealing gas from your car or ....Vague questions lead to vague answers.
02-20-2009, 07:29 PM
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Re: y is my civic getting terrible gas gas mileage
sadly its true... you have to be more specific... and besides have you done a tune up lately? Or how about the whole switching between only one injector to two... I suffer from that problem... and while I am thinking about that... When I rev it to a specific rpm (I don't have a tach) it sputters when the second injector turns on. I cleaned out the iacv and I am unsure where to go next so I am thinking maybe fuel filter maybe?
02-20-2009, 07:30 PM
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Re: y is my civic getting terrible gas gas mileage
by filter u mean air filter? mine i brand new, or fuel filter? should i just buy a new fuel filter and pvc valve btw how much does a pvc vale cost?
02-20-2009, 07:33 PM
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Re: y is my civic getting terrible gas gas mileage
sadly its true... you have to be more specific... and besides have you done a tune up lately? Or how about the whole switching between only one injector to two... I suffer from that problem... and while I am thinking about that... When I rev it to a specific rpm (I don't have a tach) it sputters when the second injector turns on. I cleaned out the iacv and I am unsure where to go next so I am thinking maybe fuel filter maybe?
02-20-2009, 07:34 PM
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02-20-2009, 07:38 PM
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Re: y is my civic getting terrible gas gas mileage
on the right side of the of the the dpfi connected by 1 electrical switch and 2 hoses. Just use carb cleaner.
02-20-2009, 07:40 PM
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02-21-2009, 01:35 AM
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Re: y is my civic getting terrible gas gas mileage
check tire pressure
change oil
change air filter
change fuel filter
change oil filter
change pvc valve
clean intake and injectors (2)
redo timing belt (make sure its all TDC)
check ignition timing (make sure its 16*)
new cap and rotor
new plugs (gapped to correct size)
New plug wires (make sure in right firing order)
new o2 sensor(s).
Run sea foam
i bet after than you will get 30+mpg.
change oil
change air filter
change fuel filter
change oil filter
change pvc valve
clean intake and injectors (2)
redo timing belt (make sure its all TDC)
check ignition timing (make sure its 16*)
new cap and rotor
new plugs (gapped to correct size)
New plug wires (make sure in right firing order)
new o2 sensor(s).
Run sea foam
i bet after than you will get 30+mpg.
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