OHC Fuel Economy Issues

vdiatech · 20th August 2009, 08:45

when we discuss mileage during highway driving, its probably better to quote your average speed too. This I believe attributes to mileage.

I could be wrong, but you could get the best mileage driving around 70-80 kmph and anything over 100kmph the mileage could go for a toss.

ankitahuja · 20th August 2009, 10:28

Quote:

Originally Posted by vdiatech

when we discuss mileage during highway driving, its probably better to quote your average speed too. This I believe attributes to mileage.

I could be wrong, but you could get the best mileage driving around 70-80 kmph and anything over 100kmph the mileage could go for a toss.

I totally agree with that. Like we've discussed on another thread (or was it this one) you need to figure out what speeds to maintain on your car to achieve best FE.

Coming back to the quoted text, I very recently did a Delhi-Jaipur-Pushkar trip (Around 900 kms) and average speed was 120kmph. Did not go much lower than 80km and held on at 140-150 kmph a lot of times too - FE returned was 14.xx which I consider to be a loss.

alpha1 · 20th August 2009, 12:24

Quote:

Originally Posted by Tejas@perioimpl

They are the same cause i'm always pushing the car on the expressway, albeit not to crazy limits that some people do...

so you are getting same figure whether in city or on highway?
Thats strange!

Tejas@perioimpl · 20th August 2009, 12:54

Quote:

Originally Posted by alpha1

so you are getting same figure whether in city or on highway?
Thats strange!

Yes, strange but true. Another lonavla trip this weekend. Will check again after that and post.

alpha1 · 20th August 2009, 14:59

See even if you ripping on highway or driving moderate in city - it'll make a difference.

Your throttle opening determines roughly how much gasoline is gonna get burnt per second.
And your gear decides how much distance you will cover per second.

So when you decide to go 100 on highway - you are driving on 5th gear (car moves max per second), while the throttle opening is pretty low (fuel burnt per second is low) - and hence gives a good distance/fuel burnt figures.

You do 20-30 in city on 2nd/3rd gear mostly. distance covered is very very less, and throttle opening is comparable to what you would while zooming on highways.
Hence fuel consumption wil be higher.

Speedzone · 21st August 2009, 11:59

I tried my luck on the FE again for the 3rd time on my OHC 1.5 exi, this time it was better than the last

. I got a avg mileage of about 8.5 km, as compared to the last figures 7.5

AFAIK, It still seems to be less, as compared to any other 1.5 litre vehicles, who get an avg of 10 atleast. (I may be wrong)

i always tried to maintain good distance between my ride and car in front and ensure i'm on top gears (4 & 5) without pumping in more gasoline, but still my FE still remains the same. Any expert suggestions

Tejas@perioimpl · 21st August 2009, 12:45

Quote:

Originally Posted by alpha1

So when you decide to go 100 on highway - you are driving on 5th gear (car moves max per second), while the throttle opening is pretty low (fuel burnt per second is low) - and hence gives a good distance/fuel burnt figures.

What about 140? Anyways, i'm tanking up now prior to leaving for lonavla and see the average. And then tank up after the 250km trip and check again.

honda3938 · 28th August 2009, 08:36

my ohc 1999 1.5 exi-s never gave me less than 13 kmpl in city and 15 on highway at a speed of 100+ and 100% ac on.

di1in · 28th August 2009, 09:37

Post Deleted by the Team-BHP Support : SMS / Slang is STRICTLY prohibited on this community. We would much appreciate your using full & proper english in posts, for the benefit of other forum users.

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di1in · 28th August 2009, 17:56

I've been getting around10 kpl ever since my cars CEL lit up. Codes showed a malfunctioning lambda sensor. From what i've read online, a bad sensor causes the engine to run richer. You think that might be the prob with the majority of us ? They also said that prior to the CEL lighting up there will be a marginal decrease in the fe..

What do you guys think ?

P.S: is there a way to see the post that got locked away for Slang?

alpha1 · 28th August 2009, 19:11

^ Yeah thats what service guys told me.
Engine runs richer, and we get less miles to gallon.

vinu_pm · 28th November 2009, 20:52

My 1.3 Dx got 17 kpl on a traffic less highway Bangalore - Mysore on early hour 4am. Mileage calculated on full tank to full tank after the up and down journey around 400 km.Petrol used is IOC Normal .Speed 90-110 most of the time .The tyre is little old Bridgestone 13 inch stock rim with 30 psi . yet to check the city mileage

di1in · 30th November 2009, 17:17

Quote:

Originally Posted by vinu_pm

My 1.3 Dx got 17 kpl on a traffic less highway Bangalore - Mysore on early hour 4am. Mileage calculated on full tank to full tank after the up and down journey around 400 km.Petrol used is IOC Normal .Speed 90-110 most of the time .The tyre is little old Bridgestone 13 inch stock rim with 30 psi . yet to check the city mileage

Whoa ! That's one helluva mileage!

Sprucegoose · 30th November 2009, 17:51

Just clocked 562 km on one tank of petrol....

I got an OHC 1.3

with an FFE & a foam filter.

did a return trip to pune [round trip distance?], the rest was done in the city...

the OHC tank is around 45 Lts

honda3938 · 30th November 2009, 18:10

friends i have a query that i am not able to fill above 35lts of petrol in my ohc.even if the needle is on red mark does anybody else face this problem.the petrol pump automatically cuts off .

20th August 2009, 08:45	#31
vdiatech BHPian Join Date: Mar 2009 Location: Bangalore Posts: 414 Thanked: 10 Times	when we discuss mileage during highway driving, its probably better to quote your average speed too. This I believe attributes to mileage. I could be wrong, but you could get the best mileage driving around 70-80 kmph and anything over 100kmph the mileage could go for a toss.
	() Thanks

20th August 2009, 14:59	#35
alpha1 Senior - BHPian Join Date: Apr 2007 Location: LandOfNoWinters Posts: 2,093 Thanked: 2,605 Times	See even if you ripping on highway or driving moderate in city - it'll make a difference. Your throttle opening determines roughly how much gasoline is gonna get burnt per second. And your gear decides how much distance you will cover per second. So when you decide to go 100 on highway - you are driving on 5th gear (car moves max per second), while the throttle opening is pretty low (fuel burnt per second is low) - and hence gives a good distance/fuel burnt figures. You do 20-30 in city on 2nd/3rd gear mostly. distance covered is very very less, and throttle opening is comparable to what you would while zooming on highways. Hence fuel consumption wil be higher.
	() Thanks

21st August 2009, 11:59	#36
Speedzone Newbie Join Date: Jun 2007 Location: Bangalore Posts: 19 Thanked: 0 Times	I tried my luck on the FE again for the 3rd time on my OHC 1.5 exi, this time it was better than the last. I got a avg mileage of about 8.5 km, as compared to the last figures 7.5 AFAIK, It still seems to be less, as compared to any other 1.5 litre vehicles, who get an avg of 10 atleast. (I may be wrong) i always tried to maintain good distance between my ride and car in front and ensure i'm on top gears (4 & 5) without pumping in more gasoline, but still my FE still remains the same. Any expert suggestions
	() Thanks

28th August 2009, 08:36	#38
honda3938 BHPian Join Date: Aug 2009 Location: patiala Posts: 125 Thanked: 0 Times View My Garage	my ohc 1999 1.5 exi-s never gave me less than 13 kmpl in city and 15 on highway at a speed of 100+ and 100% ac on.
	() Thanks

28th August 2009, 09:37	#39
di1in BHPian Join Date: Jan 2009 Location: Thrissur Posts: 511 Thanked: 285 Times View My Garage	Post Deleted by the Team-BHP Support : SMS / Slang is STRICTLY prohibited on this community. We would much appreciate your using full & proper english in posts, for the benefit of other forum users. Please view our board rules carefully before proceeding any further. Last edited by GTO : 28th August 2009 at 15:20.
	() Thanks $Received Infraction$

28th August 2009, 17:56	#40
di1in BHPian Join Date: Jan 2009 Location: Thrissur Posts: 511 Thanked: 285 Times View My Garage	I've been getting around10 kpl ever since my cars CEL lit up. Codes showed a malfunctioning lambda sensor. From what i've read online, a bad sensor causes the engine to run richer. You think that might be the prob with the majority of us ? They also said that prior to the CEL lighting up there will be a marginal decrease in the fe.. What do you guys think ? P.S: is there a way to see the post that got locked away for Slang? Last edited by di1in : 28th August 2009 at 17:58.
	() Thanks

28th August 2009, 19:11	#41
alpha1 Senior - BHPian Join Date: Apr 2007 Location: LandOfNoWinters Posts: 2,093 Thanked: 2,605 Times	^ Yeah thats what service guys told me. Engine runs richer, and we get less miles to gallon.
	() Thanks

28th November 2009, 20:52	#42
vinu_pm BHPian Join Date: Oct 2009 Location: Bangalore Posts: 139 Thanked: 10 Times View My Garage	My 1.3 Dx got 17 kpl on a traffic less highway Bangalore - Mysore on early hour 4am. Mileage calculated on full tank to full tank after the up and down journey around 400 km.Petrol used is IOC Normal .Speed 90-110 most of the time .The tyre is little old Bridgestone 13 inch stock rim with 30 psi . yet to check the city mileage
	() Thanks

30th November 2009, 17:51	#44
Sprucegoose BHPian Join Date: Jan 2006 Location: Mumbai Posts: 313 Thanked: 45 Times View My Garage	Just clocked 562 km on one tank of petrol.... I got an OHC 1.3 with an FFE & a foam filter. did a return trip to pune [round trip distance?], the rest was done in the city... the OHC tank is around 45 Lts
	() Thanks

30th November 2009, 18:10	#45
honda3938 BHPian Join Date: Aug 2009 Location: patiala Posts: 125 Thanked: 0 Times View My Garage	friends i have a query that i am not able to fill above 35lts of petrol in my ohc.even if the needle is on red mark does anybody else face this problem.the petrol pump automatically cuts off .
	() Thanks