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Old 30th April 2019, 10:12   #661
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Default Re: Advice on CNG Conversion

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Originally Posted by sumeethaldankar View Post
I replaced the coils later due to which the jerks vanished but the car kept stalling in heavy traffic. I got it retuned from Lovato Ghatkopar but they made it worse. I later on sold the car. I would suggest getting it checked from a good CNG garage before going for coil change etc. I really canít help you with any good suggestions for CNG garages because I ended with crappy ones. I would not go to Suraj/ Lovato Ghatkopar for tuning.
Thank Sumeet. I have been to Suraj once and he had insisted that I change my throttle body which i did not. This was 2 years ago when I had to leave my vehicle over night
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Old 8th June 2019, 07:44   #662
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Default Re: Advice on CNG Conversion

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Originally Posted by DPetrolHead View Post
A while ago a had a similar problem of low power and pick up with unstable rpm and my mechanic suggested the same thing. He not only changed the OEM valves but switched to higher output ones which a preferred for a CNG converted car.

So, I would say go for it.

If you still have any CNG related issue, PM me and I will give the contact of my mechanic


Cheers!
What was the total cost to get that done for you?
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Old 25th July 2019, 20:30   #663
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Default Re: Advice on CNG Conversion

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What was the total cost to get that done for you?
Hey! Sorry for the late reply, just saw the post.
It wasn't much as far as I remember. It was around 1.5-2k for them.

Cheers!
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Old 26th July 2019, 17:45   #664
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Default Re: Advice on CNG Conversion

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Originally Posted by DPetrolHead View Post
I am driving a Swift dzire petrol converted to CNG for 2 years and my father has been driving a CNG converted car since early 2000s, so I have a little knowledge and experience in CNG converted cars.

Regarding your case, yes the valves can play a major role in power output of the case, especially in CNG cars.

A while ago a had a similar problem of low power and pick up with unstable rpm and my mechanic suggested the same thing. He not only changed the OEM valves but switched to higher output ones which a preferred for a CNG converted car.

So, I would say go for it.

If you still have any CNG related issue, PM me and I will give the contact of my mechanic


Cheers!
Edit: So sorry for the wrong information, they are actually the spark plugs that were changed to higher output ones. Apologies for the misunderstanding
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Old 14th September 2019, 00:59   #665
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Default Re: Advice on CNG Conversion

I am converting my 1L+ kms Maruti Sx4, to CNG from Lovato. Car is a 2009 model and doesn't have any issues as such. Though I am not a big fan of CNG, this car is old now and I have decided to keep it for some more time. Since this car is not known to give any decent fuel efficiency, gonna convert it.

One of the recommendation the CNG installation guy had was to replace the plugs and the ignition coil. My ignition coils have never been changed, and only one was replaced, when it burned out @ around 70K. Will be doing them as soon as my car back.

I have a few question on this.
  • Which spark plugs should I go for, can I go with the standard ones or should I use some specific model which will have the exact gap setting.(Don't want to depend on the mechanic for making the gap adjustment). I am assuming since there is a Company Sx4 CNG variant, there has to be a spark plug which maruti specifies for its CNG car.
  • Should I really change the Ignition Coil right away. The CNG guy recommended for me to do so. Will they make a performance difference. I have an habit of making things run until they worn out, except for crucial or expensive components. Or can I just want for one of them to wear out and then change all four of them. If the current Ignition Coil affects the performance of CNG even slightly. I will prefer to change them.
  • The pressure reducer in the kit has a water inlet. This is to warm up the gas. This port will not be used and will be left as is. Now as per the person who is installing the kit, says this is not typically needed, since ours being a warm country, we don't face much issues. Also it is one of the tricky part of the installation, there is a possibility of leaks in the future. Since he is speaking from experience, I am choosing to believe him. Has any one faced any issues by not hooking up the reducer to the coolant lines. Or should I absolutely get it done. What are the cons if I don't get it done. I am assuming fuel efficiency has to be affected by this.
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Old 14th September 2019, 09:18   #666
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Default Re: Advice on CNG Conversion

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Originally Posted by frewper View Post
I am converting my 1L+ kms Maruti Sx4, to CNG from Lovato....
One of the recommendation the CNG installation guy had was to replace the plugs and the ignition coil. My ignition coils have never been changed, and only one was replaced, when it burned out @ around 70K. Will be doing them as soon as my car back.

I... Has any one faced any issues by not hooking up the reducer to the coolant lines. Or should I absolutely get it done. What are the cons if I don't get it done. I am assuming fuel efficiency has to be affected by this. [/list]
I had used both the OE spark plugs which were the Iridium type and the standard spark plugs by NGK. Both the plugs had their gap adjusted for the CNG. After using the standard NGK I started using the OE type and found the car was much better to run on and never went back to the standard ones.

If the coils are not expensive changing them might not be a bad idea. A typical issue with bad coils is jerking while accelerating.

.One more piece of advice I will like to share with all wanting to convert to CNG. Factory fitted is the best option. Modifying existing car to run on CNG is a hit and miss method. If you are lucky you will get a good installer and the car will give less troubles (but trouble it will eg eating of boot space etc). A simple way that I found to cut cost is to be part of ride sharing apps like S-Ride/Quick ride with people who often travel in the same direction as you do daily. You just have to deal with people who yes at times can be jerks and not the jerks of the car due to CNG.. Not only does this save money, you car remains in factory fit condition with no modification and more often than not you will also have decent company with you to travel. It's a win win win for you, your passengers and your car as well.
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