what is the difference btween petrol and diesel engine?which of the best them?

i want to install CNG kit for my ford fiesta jun 2011 model .pl suggest the dealer , best price and technology to be used.

Please give Pros and Cons of K 14 Engine used in Petrol Ertiga?

My 2011 model Hyundai Eon's performance is truly below my expectations. Missing and power related issues with the engine were brought to the notice of the concerned person at the Service Center, but of no use. They update software and that is not a permanent solution for the problem. Is this a common problem in all Hyundai Eon cars?

sir 1 week back i had purchaged santro xing xd prtrol and lpg 30 kg kit,but i need your sugesion that the starting proceger of petrol and lpg ,guide me that which one will give better liufe to engine

what is the deference between tci, ddis, cr4, crde deisel engine in term of technical specifications and performance.

what is engine immobiliser ?

DDIS diesel engine which is now coming in swift are not so good like the earlier ones launched by Fiat. Pls advise..

Dear Expert,
How much difference does a 3 cylinder engine make viz a viz 4 cylinder? I'm really confused between the i20 and polo 1.2 petrol. I like the polo's performance, stability, quality compared to i20 but its just a little noisy. Is that because of a 3cylinder engine?

i am having the Maruti 800 ac.2007. Its having the 4 gears. It is possible of addition of 5th gear? whether it is successful? if it is what will be the costing?