Gas Consumption Very High

[ghelobytes]

Mga kasama,

I have a 1994 Honda Accord. Dati madalas mag overheat.
Pinaayos ko at naayos naman. Then after a month, I heard
a clanking noise. Yun pala, yung crankshaft pulley sira na.
So gastos ako ulit. Naayos naman. Yun nga lng, I noticed na
sobrang lakas kumain ng gas ung kotse. Sa computation ko,
around 2.5 Km/L ung FC nya. I've read before na ang 94 accord
has an average of 7-8 Km/L na FC.

What else could be wrong? Kailangan ba syang i-tune up?
Yung gulong ba, malaki ang maico-contribute sa fuel consumption?
Medyo kalbo na rin kc ung tires. But 2.5 Km/L? It must be
something else.

Please help naman po! BTW, noob po ako sa car .

[tidus1203]

2km/L???? ARe you sure, talo pa ata Expedition nyan ah... Is th care constantly revving very high even on idle??

[[archie]]

DAMN!!!!! 2.5km/l???!?!? kakaiba sa lakas sa gas yan... parang hirap paniwalaan.

anyway, hirap ba sa hatak yung makina? matigas ba yung clutch? may nararamdaman ka bang kakaiba sa takbo? nagpatuneup ka na ba ng malupit? if you reach 80km/h nasaan ang rpm mo?

sakit sa bulsa niyan, kailangan kagad mapagawa yung ganyan.

[alainroyce]

Grabe !! sbi nga ni sir tidus1203 talo mo pa nka expedition nyan.. better check yuor engine their something wrong sa timing nyan.. mahal pa naman gas ngayon..

[ghelobytes]

As I said po noob lng ako baka naman mali ung compute ko.
Ganito po kasi ginawa ko:

My fuel gauge is pointing to Empty. Went to gas station at nagpalagay ng 500.00 petot (8.393L x 59.570 P/L) na gas. Reset ko po yung trip meter and went home. Today, may hinatid ako sa jeep station then went to work. Upon arriving office, my trip meter reads 129. If not mistaken, meters po yun so meaning appoximately 13 KM yung tinakbo ko since yesterday from gas station. My fuel gauge is nearing Empty again. Siguro mga 4-5 L yung nabawas. So 13 KM/5L = 2.6 Km/L.

Actually, last saturday, I went to Las Pinas. Almost Empty na rin so nag pa-gas ako worth 1,000 petot. Thats about 16 L of fuel. Since nakalimutan ko i-reset ung trip meter, gumamit na lng ako ng Google Earth to measure ung distance nung route ko. My measurement was 46 KM. Same thing, pagdating ng bahay, almost Empty na ulit gas ko. So 46 KM /16 L = 2.875 Km/L.

Could this be a leak in fuel tank? If so paano ko po kaya malalaman?

One more thing, when I was in Fort Boni, I heard a "TOK" noise at the back.
Since naka-park ako malapit sa golf course, I thought baka I was hit with golf ball lng and immediately dismissed the incident. I check outside. Wala namang dents or marks.

BTW. Automatic po pala ung kotse. Parang hindi naman po hirap ung engine. At around 80 kph nasa > 3000 rpm po sya. Ung idling ko po is < 1000 rpm.

Iba pa po ba ung service na tune up? Kahit na pina-top overhaul na sya?
Sorry po, noob lng...

[lui]

nku 80kph *3000rpm? kulang ata ng isang gear sir

[coiter]

nku 80kph *3000rpm? kulang ata ng isang gear sir

oo nga. parang nasa 3rd gear ka pa lang nito a. napansin mo ba kung nagshishift pa ang AT mo? baka naman stuck sa 3rd gear yun or worse 2nd.

[paolorenzo]

Simplest way to compute FC is to start with a full tank, reset trip meter to zero. Then after travelling a considerable distance (ideally when near empty), do another full tank, and measure total distance travelled. Divide total distance by the amount of fuel needed for a full tank.

If indeed abnormally malakas consumption mo, better bring it to the Honda casa. They have the proper tools to diagnose. Might be incorrect plugs, incorrect a/f mixture, etc.

[istan]

Just bring it to Honda Casa just this once for a diagnosis. Masakit man sa bulsa, pero in the long run...makakatulong. Should be less than P1,000 for a diagnosis.

[Autobeat]

BTW. Automatic po pala ung kotse. Parang hindi naman po hirap ung engine. At around 80 kph nasa > 3000 rpm po sya.

Just to confirm, when driving at 80kph, your gear is set at "D" or "D4" and not at "D3"?

[wilcats]

holy schmoeley... 2.5km/L>?! kakaiba un ah. baka naman may tagas tanke mo bro!! hehe :D pacheck mo nalang ulit,and dun sa expert sa Honda. bka hindi magaling ung last na gumawa at may nakalikot na mali. try mo sa Speedyfix along Santolan ;)

[niky]

The only way to tell for sure is to fill the tank completely, set the trip meter, and drive till it's almost empty and fill up again.

You should have your engine checked... there are a lot of issues that can cause excessive fuel consumption.

[niky]

Engine problem + LPG = Engine problem pa rin.

The question... how accurate is your fuel gauge? From "Empty" to "Full"... how many liters do you have to put in to top off the tank? If it's around 40 liters, that should mean it works. Sometimes, the "Empty" mark is set 5-15 liters from actual empty, to ensure you have a reserve if you drive it to "E".

I'd question your odometer, but you said you've referenced one trip against the map. So that's out.

----

The first thing to do, really, is to get your engine checked out. If you experienced overheating before, there are a zillion things that could be wrong now. Your engine could have a blown gasket, worn piston rings, bad spark plugs, a dying automatic transmission (I once drove an Accord that got maybe 4km/l... the AT was slipping terribly), a host of things.

The obvious first answer... Check everything!

Check your oil level. Is it low? Does it go down everyday? Is the oil very dirty?

Check your coolant. Are you losing coolant? Is it full of rust or does it smell of oil?

Check your spark plug tips. If they're white. That's bad. If they're red, that's good. If they're black and oily, that's what your problem is.

A tune-up is a good first place to start... but if you have any problems with any of the above, you might want to get a compression test and start thinking about an overhaul.