Advice on disastrous FC

[Latio2005]

Hiya. Haven't been logged on for a while as I've been busy with work.

Would appreciate some advice from fellow Lations on my problem.

1. Recently found mileage to be very bad. Sometimes as bad as 9.2km/litre. This is when compared to 11km/litre previously (based on same setup).

2. Engine seems noisy especially sometimes during start/stop driving where I need to step harder to get moving. Especially apparent in upslope of MSCP carparks. Noise and jerkiness experienced.

My setup:
Latio Sport CVT with 102k mileage.
215/45/R17
Spark bridging
ez stab
alutec crank pulley.

So far some commented could be time to change sparks, while some also commented may be fuel filter.

Appreciate advice on this.

Thanks! 

[Ying]

so did you change the sparks plug (which should be replaced at 100k km) and clean the fuel system?

when is the last time you change your air filter?

[Latio2005]

Have yet to do either although I was scheduling for a spark change in 3k more during my service which is due @ 105k.

As for air filter, I'm using a Hurricane which I put in so long ago I forgot about it earlier in the previous post.

Is a suffering FC a typical reaction of worn out spark plugs? 

Would

[Huatster888]

isit time 4 oil change???long due engine oil is unhealthy 4 ur car...u take care of him the car in turn take care of u ....

[Latio2005]

isit time 4 oil change???long due engine oil is unhealthy 4 ur car...u take care of him the car in turn take care of u ....

Thanks, but I don't think it's engine oil as I'm quite staunch about changing engine oil. I'm uding X-Rev.

Cheers!

[Latiorarri]

Your Hurricane filter got clean boh???

[NSman]

yalor, got a dead rat inside the airbox also dunno....

[expresso]

yup.... the air filter could be the cause of engine noise
my previous car also faced the same problem...
when i change back to normal filter, the noise reduces.

for fuel consumption, probably u can change to iridium spark plugs.
it do helps little bit.

my new ride for latio, now i testing the stock condition.
If the petrol consumption still remain at 11km/l, i will change to iridium spark plugs

[jliow]

this guy just open a new thread without reading or using other similar threads....

[Huatster888]

aiyah nvm lah..........
oh smetink to let u all noe......spark plugs erm nt reali help in reducing the fc ......the pros around will enlighten more....

[clarence]

Latio2005,

1 good way to reduce your fuel consumption is to dump your 215/45R17 tyres and switch back to stock 185/65R15 tyres. More comfort too.

I don't have any  problems getting 12km/l on average on stock tyres on my 4A/T.

Your CVT should be more economical.

[CSM]

Hi There

My Latio sports of 2 yrs+ has been doing at 11.5KM/L consistanly
Recently, I started to added a petrol addictive (Atom Power), per box of 2 bottles at 250ml each cost S$60
1st top up - 1/3 bottle - Milage increase a little 
2nd top up - 1/3 bottle - Milage increase to 12.5km/l 
last top up - 1/3 bottle - Milage reach 13.5km/L 

Now on 2nd bottle, will be adding as recommened 1ml to 1L
1st Top up - 1/5 bottle - (TBA)

[SoL]

Hi There

My Latio sports of 2 yrs+ has been doing at 11.5KM/L consistanly
Recently, I started to added a petrol addictive (Atom Power), per box of 2 bottles at 250ml each cost S$60
1st top up - 1/3 bottle - Milage increase a little 
2nd top up - 1/3 bottle - Milage increase to 12.5km/l 
last top up - 1/3 bottle - Milage reach 13.5km/L 

Now on 2nd bottle, will be adding as recommened 1ml to 1L
1st Top up - 1/5 bottle - (TBA)

I don't think your fuel savings can offset the cost of your additives.

Save your money by going lighter on the pedal and going slower. Got me from 12km/l to 18km/l.

[coffeeshake]

hey guys... saw this thread and thot to post my query as well...

my is a new ride and i completed my 1k servicing abt 2 weeks back.. but still my FC remains at 9km/l

my driving habits are as per my old car, no heavy loads, just 2 car seats...

reving at most 2krpm.. hoping to get some advice 

[SoL]

hey guys... saw this thread and thot to post my query as well...

my is a new ride and i completed my 1k servicing abt 2 weeks back.. but still my FC remains at 9km/l

my driving habits are as per my old car, no heavy loads, just 2 car seats...

reving at most 2krpm.. hoping to get some advice 

Still 1k only, will get better over time when you change oil.

Also, what speed do you drive at in expressway? Traffic jam alot? Idle in CBD alot?

Check this post I wrote long ago: http://forum.thelatioclub.org/index.php?topic=7701.0

[coffeeshake]

Still 1k only, will get better over time when you change oil.

Also, what speed do you drive at in expressway? Traffic jam alot? Idle in CBD alot?

Check this post I wrote long ago: http://forum.thelatioclub.org/index.php?topic=7701.0

thanks.. it was helpful 

[nakshire]

The CVT Latio can accelerate to 60km/h at 1200rpm :-). When the light turns green, apply gentle pressure and let the engine rise smoothly to 1500rpm. Then slowly ease back a touch to encourage the CVT to a higher ratio. Once you get down to 1200rpm, keep steady pressure on the pedal and watch the speed climb to 60km/h. Of course, you have to be a little patient. When you reach 60km/h at 1200rpm, you are at max gear ratio, and you can increase pedal pressure *gently* to get up to your desired speed while keeping the highest gear ratio.

This is much easier to do with the A/C off. Takes about 18s to accelerate to 60km/h from a standing start on level ground.

The best way to find out if this technique works better than a high rpm take off is to grab an FL Latio with the built in FC meter. Set a fixed route and test both methods several times with the FC meter set to average mode. It would be great if someone can do this and post the data.

It would also be great if someone could post FC .vs steady state cruise speed with and without A/C, windows up. Then we can find the sweet spot and keep our accelerators pegged at that spot.

was reading up on that refered thread when i saw this post regarding gear ratio on CVT engines. If i'm not wrong, cvt engines should be having infinite amount of gear ratios to give u the comfort in your ride. Letting go of pedal and pressing in again is only an imaginary thing that makes u feel that you are driving a 4at car.

For me, if i need better FC, i will step in harder to attain 80km/h. took me 5-7 secs to reach that. i dun mind spending that one blast of petrol and then cruise rather than to constantly let the engine drink petrol for 16 secs. energy needed to overcome fricitional energy over the extra 9secs can be used to cruise for more distances. :p

[SoL]

was reading up on that refered thread when i saw this post regarding gear ratio on CVT engines. If i'm not wrong, cvt engines should be having infinite amount of gear ratios to give u the comfort in your ride. Letting go of pedal and pressing in again is only an imaginary thing that makes u feel that you are driving a 4at car.

For me, if i need better FC, i will step in harder to attain 80km/h. took me 5-7 secs to reach that. i dun mind spending that one blast of petrol and then cruise rather than to constantly let the engine drink petrol for 16 secs. energy needed to overcome fricitional energy over the extra 9secs can be used to cruise for more distances. :p

Considering latio takes around 11second to get to 100km/h, your 5-7sec to get to 80km/h seems like a very large blast of petrol. I would guess the rpm is about 4k? A lot of petrol is wasted on overcoming frictional energy in the engine.

The key thing is not to care how much petrol your burn, but rather how efficiently you burn the petrol.

I'm not too sure about the CVT part, but I think you're right. I remember CVT does not have fixed ratios like 4AT.

[nakshire]

Considering latio takes around 11second to get to 100km/h, your 5-7sec to get to 80km/h seems like a very large blast of petrol. I would guess the rpm is about 4k? A lot of petrol is wasted on overcoming frictional energy in the engine.

The key thing is not to care how much petrol your burn, but rather how efficiently you burn the petrol.

I'm not too sure about the CVT part, but I think you're right. I remember CVT does not have fixed ratios like 4AT.

Yeah thats what I read up about CVT also.. no fixed ratios.

Agreed with what you said about efficiently burning your petrol. Never really timed the acceleration but gave a super rough estimate. Maybe later when i drive i go time.... hehe