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RPM drop in civic (CNG)

RPM drop in civic (CNG)

My daily runner civic VTI is in a little bit of problem,wich is described below

when ever i race the engine when it is in a GEAR the rpm drops.but when it is neutral wnd when i race it no rpm drop.

its common that the rpm drops but in my case the rpm comes very low near the zero needle i have to keep the half clutch Pressed for keeping the engine running.
drive with the AC at low speeds is near to impossible.

i have to shift to the 1ST gear after every brake in case of a speed breaker otherwise the car stops after the rpm drops.PREVIOSLY i it did it in the 3rd or 2ND gear.

FirstLY i thought that it might be the rpm problem i increased it to 1200 rpm
but the problem prevailed.
i suffer this problem on slow speed when the car gets above 60 no feel of power loss.with ac.

the air filter is ok.


There is no such problem when i run it on petrol.

ANY kind of help will be appriciated.
Gari.pk User 4741 asked on 19 Jul 2010 17:22:53 pm
1 Answer
293 views |
Maani - on 19 Jul 2010 17:23:05 pm
today i went to the mechanic
and got the throttle body cleaned with spray worth 190
NASA carb cleaner.
and labour of 250.

the problem has gone.
pick has increased like petrol, very responsive now.
no more stalls.

firslty the mechanic told me that it can be a sensor problem but i insisted him to do the job.

it has more effect on performance than a CNG tune up.
 

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