not working well on petrol?

2006 HYUNDAI SANTRO
145,000 MILES • 4 CYL • 2WD • MANUAL
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ARIFKHAN
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when i drive my car on petrol it seems that it misfiring some times and when i start it on idle the rpm are high, but when i touch the wiring which comes from the computer the rpm becomes normal and during the drive when the wire cable misplaced it start misfiring again. i am unable to understand that which wire is loos so that i could fix it.
Feb 24, 2015 at 12:57 AM
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HMAC300
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This sounds like a classic tune up with ignition coils problem which are normal service items so we should start there first. Also, do you have a check engine light on? If so we should run the codes.

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing


Spark Plug

Type
DENSO .................... SK16PR-A11

and this guide can help as well


https://www.2carpros.com/articles/how-to-tune-up-a-car-engine


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Feb 24, 2015 at 6:37 AM