Rough Idling Problem with CNG on Honda Civic 2001

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Rough Idling Problem with CNG on Honda Civic 2001

First I thought to post it in the thread started by @ diesel_boy, but this topic is a bit different so started a new thread. This what was said earlier;

A friends CNG civic 2001 model also has a Rough Idling Problem.

And my search of internet tells me that the Venturi is the main problem.

In that civic the Venturi is installed inside the airfilter box. Can you kindly tell me if Genuine/Original venturi designed for the Civic engines are available in Pakistan? and what is the cost? ........because when I look at the venturi it seems like a desi stuff!!

Can you also guide us towards the permanent solution of rough idling on Civics?....The problem is more significant when the engine is Cold!

Thanks for your consideration

Gari.pk User 4731 asked on 19 Jul 2010 17:16:59 pm

1 Answer

261 views |

Maani - on 19 Jul 2010 17:17:41 pm

he type, size placement are all wrong, and on top of that he pushed the gas pipe of mixer (ventury) too much, so there is no enough passage for the air, you need a good air / fuel ratio by useing the mixer (ventury). Just insert the gas into the engine is not called a conversion.

If you study a carburator, the nerrowest point of the airpassage inside the carburetor is called ventury, where the maximum pressure build and at the same time and same point fuel introduced for the proper mixture of air / fuel.

If some one pay a little attention to understand basic fuel system, its very easy to understand to use an alternate fuel for EFI or a carburetor car.