Subaru petrol engines - Types of fuel delivery

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Sat 8 Jun 2013 13:51
Subaru petrol engines - Types of fuel delivery - Ed V

Multi-point sequential injection or direct injection - two options shown. The former seems to give quite a bit better MPG. Are there obvious pros and cons to the two types?

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Sat 8 Jun 2013 14:08
Subaru petrol engines - Types of fuel delivery - RT

Direct injection normally gives better economy than port injection - no point using direct injection otherwise as the injectors have to be much higher quality/cost to stand up to combustion temperatures/conditions.

Direct injection will be more expensive to fix problems out of warranty if any occur.

Edited by RT on 08/06/2013 at 14:09

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Sat 8 Jun 2013 15:28
Subaru petrol engines - Types of fuel delivery - balleballe

The former is port injection and should normally give less mpg than Direct injection.

Carbon build up represents an issue with direct injection engines

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