car runnin too rich, help

[kiddoDC2]

at the moment, fuel economy is really really bad, like 250km/tank on average and i get back fire in the exhaust

car is a 94 vtir teg and all i've got at the moment is an aftermarket k and n filter + 2.5 inch catback w/4" tip

would the solution be adding some kind of fuel managment system /ecu thing? or should i just get a chip of some kind?

[EuroAccord13]

First up, have your filter checked to see if it's dirty and restricting proper flow.


CHEERS
Nick

[kiddoDC2]

the pod filter is just a coupla months old and just got oil filter changed
might get the pod cleaned anyways

oh and btw, i used pod on stick to replace the stock air box
could that be the problem?

[EuroAccord13]

Mmmm... Maybe the ECU map is stuffed... try and D/C the ECU and connect again.. the intake temp might not be reading properly and thinks the engine is cold and thus making the car run rich.

It could also be that the O2 sensor in the exhaust manifold is clogged as it can't read properly and it adds more fuel and with more fuel, it cloggs the sensor even more. You might need to change the sensor. Considering the age of the car, I might have that checked out first.

It could also be a vacumn leak which also causes the ECU to inject more fuel. Then again, a faulty FPR can be the cause of it too...

There are so many variables that might be causing this but I guess it's best to start ironing each one out until you find the problem.


But on a lighter note, running the car rich is safer than running it lean :)

P.S ---> I do not get what u mean by this " used pod on stick to replace the stock air box "


CHEERS
Nick

[kiddoDC2]

thanks for the input euro
well what i meant by pod on stick was that i took out the air box and replaced it with a pod filter pretty much

do you think that the car running rich might be a result of the exhaust or air filter? i know that putting them on without a tune could make worse economy but i dont tink it would be this much

i'll get the o2 sensor checked out, sounds like a good possibility

[EuroAccord13]

thanks for the input euro
well what i meant by pod on stick was that i took out the air box and replaced it with a pod filter pretty much


do you think that the car running rich might be a result of the exhaust or air filter? i know that putting them on without a tune could make worse economy but i dont tink it would be this much

i'll get the o2 sensor checked out, sounds like a good possibility


Ah aka, SRI style.. nice nice! I would suggest a heat shield of some kind to further make it more effective as you wouldn't want to be sucking in the engine temp air... a simple aluminium shield in between the engine and around the filter will make it effective and also looks nice :D :D :D

Yup.. it shouldn't be that bad with just an exhaust and filter change..

[VTEChnique]

Pod filter should allow more airflow.. more airflow means the engine CAN give more fuel..

Exhaust system allows the engine to release the burnt exhaust gasses more efficiantly, but this may be TOO efficiant andd there may be un-burnt fuel making it's way out of the cyllinder and out into your exhaust.. thus backfiring and popping..

so if you have this extra air going in.. and more fuel.. you need to make sure this mixture can be burnt successfully..

Check your sparkplugs.. the "gap" should be 1.1mm on honda 4cyl and they should be free of dirt and corrosion crud on the element.

if they are old, get some new plugs - they dont have to be super max-power high performance plugs.. just cheap Champion Coppers will do the trick in terms of improving your ecconomy etc. you can upgrade the plugs at a later date if this IS the problem.

so with ne/cleaned and gapped plugs, you should then re-set your ECU.
warm the car up to normal operating temp.
remove the ECU fuse for 10 mins then replace the fuse and then start the motor (DO NOT TOUCH THE GAS PEDAL) and let idle for about 6-8mins. then turn off.. for 2 mins , wait for a minute then start her back up and run for 2 mins. ECU should be re-set.

[kiddoDC2]

where is the ecu fuse located?
remove it means disconnecting one of the ecu cables or someting?

i attempted someting like that before , but did it by disconnecting one terminal of the car batt instead,not sure if it actually did anything..... does this also reset the ecu?

[A'PEXi]

resetting the ecu could be a possible solution, or why not put the stock air box on and see if you notice any differences?

[kiddoDC2]

ok jus put the stock air box back in
reset the ecu

car runs alittle bit better now , 220 over 3/4 tank
thats still pretty shit i recken

maybe i should get it check out somewhere
any good places to recommend in melboune?

[wynode]

You can't measure fuel consumption just looking at the gauge.

[Javed]

Yeah true that, my gauge is a sack of shit, itll be fine till it hits the low area when it seems to go all over the place, then all of a sudden its on the friggin red line!

[pgclee]

do you have fuel pump, or injectors in it?...and check what kinda ECU you're running now...

but 2.5 inch is too big man...bit of advice...smaller ones...unless you've bore up your head and with high comp pistons...
check your alternater as well, and your sparkplug....and the core as well..
better sparks, with good plugs, and clearance of the plugs is just nice, you will save hell lots of petrol...

[pgclee]

ok jus put the stock air box back in
reset the ecu

car runs alittle bit better now , 220 over 3/4 tank
thats still pretty shit i recken

maybe i should get it check out somewhere
any good places to recommend in melboune?


what ever you do, don't simply reset your ECU...just bring to some shop and they may help you with the problem rather causing more troble man...

[Weq]

02 sensor? plugs?

[redliner]

hey this might sound silly, but maybe u need to change spark plugs... maybe ur fuel combustion not burning properly. You neva know, mayb the spark plug is damaged or not working.. woth a check anywayz.

[sivic]

you could have a leak around the exhaust maniflod. cold air gettin in will cause popping and will confuse the o2 sensor into thinking more fuel needs to be injected due to higher 02 levels.... i think that is the prob with mine. i can smell the exhaust leak

[kiddoDC2]

yeah problem sortta solved thanks for the info guys

[2ds]

what was wrong ?

-2ds

[kiddoDC2]

a combination of things

for starters the o2 sensor was disconnected (i have no idea why but i 'll let the matter rest, now i need a new service mechanic)

plus a number of other things like the fuel regulator (i tink)