Facing a problem in Palio 1.2 engine

[amitverma]

hey guys i own a palio 1.2 sport abt 8 months old. i have been facing a lil problem with it. actually the engine rpm falls below 1000 at idle. is it bad news for the engine?
i think it should be a constant 1000.
secondly, if i rev the engine a bit (in neutral) the rpm needle goes up comes down below the 1k mark (say abt 800) and comes back up to settle to something abt 900 or so rpm at idle. what is wrong with it.
am i experiencing knocking with the engine. is the engine in trouble?

[SLK]

idle rpm is.. 800-900... for most cars.
my Alto which has a rpm meter, behaves the same as described by you.

engine knocking is something.. not directly related to this.
so when does your engine.. knock?... high gear low rpm?... or at high rpm?

my wagonR knocks at high rpm.... but continuous use of 91-93 octane fuel has made a lot of difference... now it knocks... only if I cross 5000rpm.

[Shan2nu]

actually the engine rpm falls below 1000 at idle. is it bad news for the engine?

What time of the day does this happen? It's common for the engine rpm to fall below 1000 after the engine gets warmed up. The Vtec for example idles at 800 rpm.

Depends on how the car has been tuned.

Shan2nu

[amitverma]

the car hasn't been tuned...its totally stock.
someone told me that mpfi units do not knock at all.
actually in the evening today, when i was reversing the car to get out from my house, i sensed a bit knocking. what is wrong?

[Shan2nu]

someone told me that mpfi units do not knock at all.

They won't knock only if you have knock sensors on your car. Some mpfis don't come with knock sensors.

Are you sure it was a knocking sound? Coz sometimes, when the engine gets bogged down (when the revvs drop too low), the engine does give out a knocking sound.

Shan2nu

[amitverma]

actually the rpm did drop too low but the question is why did it?
while reversing when i had to press the accel pedal i had to do it bit harder than i did usually. i wanted to know why.
actually my place where i have to park the car is a bit cramped. so often i have to ride the car in to the parking place with clutch so as to not to touch the bumper to the wall.
do u think that caused the problem.
as my 12th boards are getting over on monday i was thinking abt sprucing up the performance with a k&n filter and a sports exhaust. but with this problem over my head i am confused.
do you think i should take it to the dealership? is it serious. especially since the car is only 8 months old.

[SLK]

well.. I don't see any problem with your car!..
drive it a bit after your exams..... it'll be good again.

I have in past managed to use 1 tank of fuel for 3 months..... my car knocked!!

and now-a-days.. I do 80-100km.. per day (OMG I need diesel!!)... and its much better.

so if your car is being driven very rarely ..drive your car a lot.. it'll feel much better.

[drifter]

Like others have mentioned...

its perfectly normal for an engine to behave like that.
As far as the knocking is concerned...try refuelling from a different outlet, bad quality fuel can result in engine knocking.

Drifter

[amitverma]

thank you guys...
so glad i joined in here.
actually yes the car was driven a lot less than usual due to my exams. will take care in future. c ya all around.

[Shan2nu]

actually the rpm did drop too low but the question is why did it?
while reversing when i had to press the accel pedal i had to do it bit harder than i did usually. i wanted to know why.

Usually while reversing or crawling in 1st, it's very important that you use the right amount of clutch pressure. Too much pressure will reduce the amount of engine power getting transfered to the wheel and using very little pressure can put load on the engine, which requires you to increase throttle input in order to keep the engine running.

Shan2nu

[dsnreddy]

fiat vehicles have got very good ECU I mean finely tuned 16/32 bit microprocessors. For that matter my siena 1.6 which is equipped with 32 bit processor idles at 600 rpm. When the engine is started from cold the rpm raised to about 1200 and settles down after a minute or two to 600.

[Ketan]

I agree,
I have recently bought a Palio 1.9D and the engine idles between 900-1000 RPM.
Initially I thought its too much rev settings; but the guy at the showroom told me that this is a torqy engine and it will be like that only. Everything is controlled by ECU and is been set by manufacturere only; that probably cannot be considered as a minute settings and cannot be altered easily.

but yes, engine idle RPM is 900-1000 and if i switch on AC it goes a lil high and drops back to the same position immediately.

Guys, can you please let me know where should I fuel it regulary?
I have two options,, IOC extra mile or HP turbojet,, which one is high octane and good for Palio 1.9D?
However, I have seen very few IOC outlets here in the area I'm residing at. but I dont mind to find a good IOC if thats the preferred one as I alway fond of choosing good food so as my car.

[ananthkamath]

Originally Posted by Ketan

I have two options,, IOC extra mile or HP turbojet,, which one is high octane and good for Palio 1.9D?

Diesels dont need high octane fuel; the rating used for diesel is cetane not octane; even so I dont think the fuels you mentioned have differences in cetane. They only probably have lower sulphur and some additives supposed to smoothen out running.

[lamborghini]

They aren't exactly high octane but low sulphur fuel.
Technically, they both are the same thing b ut we use turbojet on the merc.

[nitrous]

Yeah, Turbojet is a good bet. I've never tried IOC xtramile. So, can't say .