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Jerks on cng

Jerks on cng

hi... im running a civic 95 on cng for the past 3 yrs and its been running perfect since then. but for the past 2 weeks its been giving me tuning problems... have been to many cng specialsts but none have been able to fix it. the car is giving strong jerks while it runs on cng, be it at the speed of 10 , 20 or 100 km/h (though its not acting tht way on petrol). Its not the regular 'missing' problem but something else. i did change the spark plugs but the problem remains.

the cng guys are blaming it on the petrol mechanic tht he isnt tuning it well on petrol thts why the problem is still there while the petrol mechanics are saying ur cng guys dont knw how to work

any bright ideas?
Gari.pk User 8939 asked on 17 Sep 2010 14:35:56 pm
1 Answer
272 views |
Rehan - on 17 Sep 2010 14:36:08 pm
start ur car on cng and then get the petrol pipe out from carborator which is coming from cng soliniod, (a small device used to stop petrol once car on cng) ..... see if there petrol mixing while car is on cng .....
do u feel jerks on cng whn press accelerator from low rpm on going higher, but once u starts gaining high rpm, there u feel no jerks ..... mostly felt in daily driving in 2nd gear acceleration , sort of ......
 

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