ASA goodfriend..
i need some guidance regarding a prob (cultus 06 carby,24k driven,mostly on petrol,9k on aftermarket cng).. which may also be of some help to others.need help with following,,,,,,,,,,,,06 cultus and just 24 K driven
1. Setting idle rpm ,,,,,,,,,,,,always first adjust the RMP on petrol and then on gas ,,,,,,,,,,,you are using a after market CNG so you have to block the air filter inlet,,,,,,,,,,,almost half of the passage must be blocked with solution tape ,,,,,,,,,,,check my previous post for that ,,,,,,,,,,,,after that first adjust the RMP on petrol by a small screw under the air filter left side , and then shift it on gas and adjust the RMP through a small screw on gas kit ,,,,,,,,turing clock wise mean reducing RPM and vise vers,,,,,,,,,,,to adjust properally you have to first tight that nut and then lose it slowly till you get a desired RPM ,,,,,,,,,,,,,keey one hand on acclerator lever on carb so that engine wont die,,,,,,,,,,,,,
a. car idle when parked
z (~400 on cng with blower on ~500) on petrol >1000 ,,,,,,,,,,,it will be ok when you adjust the RPM on CNG ,,,,,,,,,,,,,,by blower you mean AC On ?
b. car running change to neutral (1.5 to 2 just about to shut with blower on ~300),,,,,,,,,,,,dont got that point ..............
c. headlights on radiator fan on it drops 150,,,,,,,,,,,,,does add a very significant load on the alternator which will normally show up in lower idle rpms.
d. another thing when i am driving at high speeds may be around 80~100 and
i put car to neutral the rpm suddenly drops to near 2-2.5 and starts rattling or engine stops also sometimes but as the speed reduces the rpm self adjusts to around ~4,,,,,,,,,,,,,,,it happens on gas or petrol,,,,,,,,,,,,,if happens on petrol then adjust the fuel mixture,,,,,,,,,,,,after adjusting idle on petrol ,,,,,,,a simple way to adjust is to start lose the mixture till you feel some increase in RPM (take some help from another guy who sits on driving seat and monitor the RMP),,,,,,,,,,,,at tha point stop further opening and start closing slowly ,,,,,,,,,,,,,,,stop again when you feel some decrease in RPM,,,,,,,,,,,,,,at that point you have to lose the idle mixture about 1/4 turn,,,,,,,,,,,,,thats not an 100% acurate but still useful way to adjust ,,,,,,,,,,an experence person can easily adjust with this way,,,,,,,,,,,,,
i have fiddled with cng kit idle adjustment but it doesnt help..please guide how to set this.cng wala saying some butterfly problem..!! as my car is like new runs fine, gr8 mileage,i dont want to ruin it..
2. Layman's guide to carb setting through screws etc.. (opening it is too complex ive seen ur thread) (pictorial help will be more than appreciated)
BIG THANKS IN ADVANCE
JazakAllah