My 2011 XK N/A is running great 70K miles . I work at a car dealership where I can have one of the techs do an Induction service to clean the carbon off the intake valves for free. Any pros or cons to doing it . Not sure if Jaguar dealers recommend it or not . Not a whole lot came up about it with a search. Thanks

 

Not all induction services are created equal. I'd have a visual inspection of the throttle body to see if it's exceptionally dirty, I doubt it is. With DI engines like the 5.0 litre, there's always going to be extra build up of carbon deposits on the backside of the valves as there's no fuel washing the valves. This doesn't necessarily affect engine performance.

 

I totally understand no fuel to clean intake valves with DI. ( 20 years Mercedes master tech now a service advisor ) The induction service we use at work actually does a good job of cleaning carbon deposits . We have checked a few cars before and after . If it wasn't available free to me I wouldn't even think about it . But figure what the hell as long as it won't screw anything up on the Jag . I appreciate you chiming in you are always willing to give advice .

 

All of the "Let's find out if this works" videos and such always show such operations are marginal at best, even the most expensive procedures. Most actual engine builders/rebuilders say the only way to do it worthwhile is to physically remove any deposits either with walnut blasting or to remove the heads and then the valves to clean everything. THAT would be ridiculously expensive.

 

And in the end make no difference AND it'll just build up again.

Unless there's an issue which's caused excessive build up leading to blockages or sticking valves it's entirely unnecessary. A healthy engine shouldn't have this any way.

 

If done correctly, no harm, it's a petrol engine, like any other.

 

The BEST way to clean your intake valves is to get a methanol injection system. A thousand miles on THAT and you'll have nice shiny intake valves.

 

Oldsmobile used that "trick" in '63 or '64 in the F85; unfortunately, it was not ready for prime time

 

but it was detonation control of their turbo engine, valve cleaning was a byproduct. Requiring the owners to maintain fluid levels ( which often didn't take place) which then led to failed engines which led to no more turbo charged f85s.
WJ

 

Yes, different reason, at a time period when Oldsmobile owners and others hardly ever opened the hood