Direct fuel injection ?

D

doshdad

New member
Hi guys
Is the v6s a dfi engine ?
Thinking of buying but nervous. Had problems in the past.
Never used a forum before so apologies for
perhaps a silly question.
 
doshdad said:
Thinking of buying but nervous. Had problems in the past.
Click to expand...

What sort of problems? In my experience the Jaguar engines are fairly bullet-proof, so long as you maintain them and use the correct oil.

And welcome to the forum!
 
As I understand it, there have been problems with carbon deposits building up in the inlet and on the back of the valves, eventually resulting in all sorts of running problems and failures. VW/Audi 2.0 turbo engines appear to have suffered more than some and a few BMW, but it's not exclusive to these. Carbon builds up, because in direct injection the valves are no longer washed by the intake of petrol vapour through the inlet and the EGR circulates oil vapour which sticks to the inlet and back of the valves. The higher pressures in turbo engines are mentioned to amplify the problem. Interestingly VW 2.0 GTI's don't get reported with problems as much as other models. Perhaps these get more of the 'Italian tune up'.
 
Guys on the US forum reckon that annual applications of BG44K will keep those carbon deposits at bay.
 
Fuel additives bypass the inlet, so unlikely to be of benefit to this particular issue,

https://www.autoguide.com/auto-news/2015/01/is-carbon-buildup-a-problem-with-direct-injection-engines-.html
 
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