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Thread: Cultus VXRi 2007 Not Going Above 110km/h

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    Unhappy Cultus VXRi 2007 Not Going Above 110km/h

    Sallam everyone!

    I sold my Suzuki Cultus 2003 (Non EFI) and bought used Suzuki Cultus VXRi 2007 EFI (4 Cylinders) in v. good condition. Its current mileage is 35,000 km.

    Issues:
    1. Car asks for 2nd gear at speed of 15km, 3rd gear on 35km, 4th gear on 60km, while 5th gear on 80km n above. The maximum speed I was able to achieve is 110km on CNG and petrol.

    The Suzuki Cultus 2003 (which I have sold) used to ask for 3rd gear at 60km, 4th at 90km and 5th at 110 and above.

    I am not sure if this is normal for EFI engine to ask for gear at lower speeds?

    Another possibility could be the issue with spark-plugs. For example, if one spark-plug is not working, it means there will be no ignition in that cylinder and instead of releasing the hot air in the 4th stroke, the cylinder might be exhausting the un-burned fuel. This is why I feel smell of petrol sometimes with white smoke coming out of silencer.

    2. The heat needle of the car stays in the middle (After driving for 20 mins or so). While in my Cultus 2003, the heat needle used to stay just below the middle i-e at about quarter. I am thinking to use some coolant (Green) liquid.

    3. The CNG yellow LED keeps on blinking but i think its normal. However there is no red light for reserve mode (like it was in Cultus 2003). I mean when there is only 1 yellow light left, it means car can run out of CNG at any moment.

    4. When I change the gear, it sounds like some metal rods are striking with each other just beneath the gearbox. I mean gear changing is not smooth. In Cultus 2003, I had similar issue but I changed the rubbers in gearbox and the problem vanished.

    5. The sound of engine is much more than that of Cultus 2003. May be its because it has much bigger engine than the old model.

    6. Lastly, should I get the timing belt changed since car engine is still running factory installed belt.


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    No need to change the belt. Perhaps something is wrong with your clutch.
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    Thanks istafa111 for the timely reply. You are talking about the clutch plate?

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    Quote Originally Posted by MBilalBhatti View Post
    Thanks istafa111 for the timely reply. You are talking about the clutch plate?
    Yes that may be the culprit... But only if your car is properly tuned and is not performing according to the expectations.
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    Quote Originally Posted by istafa111 View Post
    Yes that may be the culprit... But only if your car is properly tuned and is not performing according to the expectations.
    Noted. I will discuss this with mechanic and will get the clutch plate replaced from official Suzuki workshop.

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    Quote Originally Posted by MBilalBhatti View Post
    Noted. I will discuss this with mechanic and will get the clutch plate replaced from official Suzuki workshop.
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    If you haven't tuned the car after buying it, get it tuned from a good workshop. Might be a problem with timing. If the workshop has timing gun then thats a good thing.

    No need to get it repaired from Suzuki workshop. They will loot you with their insane prices. Its almost 5 year old car and Suzukis can be repaired anywhere. Go to a good experienced mechanic, if he says that Clutch plate is faulty, then buy FCC company clutch plate. Its made in Japan and best one for Suzukis. Also replace the pressure plate if its scratching clutch plate. Watch out for the gear oil leakages as well.
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    Quote Originally Posted by speedster_101 View Post
    If you haven't tuned the car after buying it, get it tuned from a good workshop. Might be a problem with timing. If the workshop has timing gun then thats a good thing.

    No need to get it repaired from Suzuki workshop. They will loot you with their insane prices. Its almost 5 year old car and Suzukis can be repaired anywhere. Go to a good experienced mechanic, if he says that Clutch plate is faulty, then buy FCC company clutch plate. Its made in Japan and best one for Suzukis. Also replace the pressure plate if its scratching clutch plate. Watch out for the gear oil leakages as well.
    Nops, I got it tuned from official Suzuki workshop last week but performance is still same. If the car is still not topping 110km/h then it could be the clutch plate issue? I have not changed spark plugs yet. I will get them and air filter replaced tomorrow. As far as engine oil is concerned, it is ok atm.

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    Go for correct OE recomended Spark plugs,Get throttle and Intake manifold cleaned and also get timing checked along with Air fuel mixture checked. For clutch any wise mechanic can tell you after having a little burnout
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    get irrdium spark plugs from jz, and as rightly mentioned check ur clutch plate, and it is always a good idea to scan it from suzuki dealership to make sure sensors are working ok
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    I must say that this is the most ridiculous/strangest problem i have ever seen.

    Lets see what a Cultus (2005) can actually do on a moderately long road, full CNG tank and 2 liters of Petrol.

    On CNG: 120Kmph.

    On Petrol: 135Kmph.

    Your problem shouldn't be related to spark plugs. You can get it confirmed. Get the compression checked too.

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    My Brother in law had the same problem and problem was clutch plate

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    1. does it feel heavy when it starts to move when cold. -
    2. check for the transmission oil and wheel alignment.
    3. check for ignition timing
    4. check for the clutch combination (clutch plate, pressure plate & thrust bearing)

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