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Old 14th November 2006, 14:19   #1
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Default Engine stalling at low revs / idle

Hi All,
I'm a new memeber here and have been following d forum regularly..Getting used to d terms and learning new things everyday..
Now , I've few problems with my Zen (it's a 1998 carb zen).. The engine stalls suddenly while at idling or at low rev(say I'm trying to change gear at low speed).. Is it because of very low idling speed.. I've been to maruti service centers 2-3 times but the problem never seems to be corrected..
Secondly, while using the AC it feels like d car would never pick up any speed.. It looses power tremendously..I know there will be drop in pickup while using AC but in my case it seems too much..
Can please someone direct me some good reliable place where I can get this things fixed .. please please please..I'm desperatly looking for some help from you people..
Also the max speed I clock in my car is 130kmh. Is this ok ?? Cause ppl r telling that zen can go up 145 kmh.. Is it true ??
Regards
Kaushik
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Old 14th November 2006, 15:01   #2
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Please check your spark plus and the HT wires that link it to the distributor. If they are OK, check and clean the injectors.
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Old 14th November 2006, 15:24   #3
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Could you please tell us the following ?

1. How many KMs your car has done since 1998.
2. Are you the 1/2/3 owner of the car ?
3. Are you using LPG/CNG other than petrol ?
4. What kind of service have you done on your car ?
5. Have you specifically told MASS about this problem ?

Also i request you to please read the forum rules before posting. i guess it says sms lingo not allowed.
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Old 14th November 2006, 16:12   #4
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Check the small plastic pipes that connect below the air filter (you will
have quite a few of them). These provide
vacuum and if split at the end might stall the engine
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Old 14th November 2006, 16:27   #5
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Spark plugs were changed recently(around 2 months back)..I'll get the injectors checked..

And to answer esteem's questions,
1.60k+
2.2nd Owner(bought it from Maruti True Value Bimal)
3.Nope.. Only Petrol..
4.Regular Servicing..But this problem was there from day one I bought my car..I used to ignore it before(or I was not much sure whether it's problem with me or the car))
5.MASS means Maruti Auth. Service Station ?? If you are talking about service people then yeah I've told them twice(once at Vari Motors and once at Pratham and probably I told Bimal Service guys also) about this problem..It seems all they've done is to increase the idling speed but the problem again occurs after a few days..

Yeah,sorry for the SMS lingo..;-)
Regards
Kaushik
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Old 14th November 2006, 16:33   #6
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Hi Kaushik,

Dont get worried. Nothing that a nice tune up cant fix. Take your car to Psycho and he will sort it out for you.I would rule out the plugs or wires to be the culprits based onhis symptons. More of a Carb/timing related issue.



@hvkumar - If you read carefully before posting you will observe that he has mentione he has a Carb Zen so no injectors.

Viper

Quote:
Originally Posted by kaushik_s
Hi All,
Now , I've few problems with my Zen (it's a 1998 carb zen).. The engine stalls suddenly while at idling or at low rev(say I'm trying to change gear at low speed).. Is it because of very low idling speed.. I've been to maruti service centers 2-3 times but the problem never seems to be corrected..
Secondly, while using the AC it feels like d car would never pick up any speed.. It looses power tremendously..I know there will be drop in pickup while using AC but in my case it seems too much..
Also the max speed I clock in my car is 130kmh. Is this ok ?? Cause ppl r telling that zen can go up 145 kmh.. Is it true ??
Regards
Kaushik
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Old 14th November 2006, 17:04   #7
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Hi Viper,
May be you are right about the tuning ..carburator may be the source (and I'm also not getting the mileage a Zen should normally give).. Do you have psycho's contact no. or should I PM him ?? (BTW I'm also called the same by some of my friends ;-) )
Regards
Kaushik
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Old 14th November 2006, 19:23   #8
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Kaushik, try checking your fuse box. Since your car is quite old, it is possible that the fuse ends are rusted and/ or do not have proper contact. I had this problem in my old Matiz, and once I cleaned out the fuse/relay ends and adjusted the jacks, the engine running became smooth. I eventually had to change the entire wiring harness after struggling with innumerable fuse blow-outs/ stalls for almost 1.5 years. After changing teh wires, the engine running is smooth and power is near full throttle (my Matiz has done almost 260,000 kms and has been through 2 engine overhauls). What you could check is to pull out each of the fuses/ relays, clean the ends with solution and check the wire connects beneath.
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Old 14th November 2006, 19:42   #9
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Hi Hvkumar,
It doesn't look like fuse problem as the problem only occurs in case low rev or idling..Otherwise the engine runs smoothly without any problem..Anyway I'll get it checked.. but before I think I need to contact Psycho for tuning of the car..
Regards
Kaushik
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Old 14th December 2006, 17:26   #10
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The problem of Engine stalling seems to be solved..One more thing I forgot to mention that at idling the engine used to shudder a lot, and by seeing this the guy at the service center diagnosed the problem to be with the carburettor.. And it was found that the diaphram was gone and return fuel was leaking through the air pipe(I'm not sure of the exact terms here).. According to the mechanic now FE also should increase as fuel was getting wasted before..Will get to know after next top-up..
Thanks all of TBHP'ian for their advices..
Regards
Kaushik
Well,the problem with very low power probably still there but I'venot yet checked with AC on(it's cold nowadays)
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Old 10th September 2007, 10:45   #11
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Since this thread was something related to the carb i decided to post here.
Does anyone know a guy who can tune the carb properly in mumbai.Everytime after the car is back from service the pickup decreases further,the car refueses to start in the first crank sometime even though the engine is hot.The instant pickup that i used to get before after depressing the accelerator is gone.
This is because of setting the airfuel mixture too rich and i want to get it back to the proper thingy back.Can the guys who check the puc be able to do it?by inserting the strobe in the exhaust and setting it back to the proper ratio?
Its like in depress the accelarator and the throttle response comes after a second or so.Just before the service it used to be instant and crisp.Also the low rpm torque has vanished.After a certain rpm at high rpms i used to get an engine take off kind of feeling as in the 37 bhp waking up but that is gone.The engine rpm rises without any trace of power and with lethargy.
There is no knocking in any gear so i can rule the timing issue out and the only issue comes to light is the airfuel mixture which might be set too rich.What do u guys think?suggestions please.

Last edited by humyum : 10th September 2007 at 10:49.
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Old 10th September 2007, 11:39   #12
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Quote:
And it was found that the diaphram was gone and return fuel was leaking through the air pipe(I'm not sure of the exact terms here).. According to the mechanic now FE also should increase as fuel was getting wasted before..Will get to know after next top-up..
Kaushik, how much did the above repairs cost you, I may want to get the same checked too, and please let us know if there is a mileage increase after the changes.
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Old 10th September 2007, 12:01   #13
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Quote:
Originally Posted by musicmanaman View Post
Kaushik, how much did the above repairs cost you, I may want to get the same checked too, and please let us know if there is a mileage increase after the changes.
As far as I remember it was around 150-200 Rs.. Not very sure though.. Actually there are two ways to get that problem fixed. Either to get just the filter or whatever it's called or get that assembly changed which costs approx 650Rs.It'll depend on the availability of the parts with the workshop.Normally most of the places will have the whole assembly.I'm not sure what it is called but will let you know soon.
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Old 11th September 2007, 13:39   #14
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Okay thank you everyone for not helping .The problem is sorted out.
The secondary buttery was jammed and was not opening and thus the lack of pickup.
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Old 11th September 2007, 14:05   #15
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Could the mods please correct the title of this thread? (for the sake of posterity)!
And then delete this post!
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