oil dilution for direct injection

[monkeydave]

is it just the 1.5 jazz engine that has a problem with oil dilution or the 1.3 as well

i cant even find if the 1.3 is a direct injected engine or multi point port injection

[John Ratsey]

If that's the issue mentioned here https://clubjazz.org/forum/index.php?topic=11071.0 then I wouldn't lose any sleep about it. There needs to be extreme cold to cause sufficient fuel to not evaporate to cause this problem. UK winters are relatively mild.

[monkeydave]

If that's the issue mentioned here https://clubjazz.org/forum/index.php?topic=11071.0 then I wouldn't lose any sleep about it. There needs to be extreme cold to cause sufficient fuel to not evaporate to cause this problem. UK winters are relatively mild.

yeah it was the fit 1.5 in the us that were having the problem

so the 1.3 is a direct injection engine as well as the 1.5 ?

thanks

[John Ratsey]

so the 1.3 is a direct injection engine as well as the 1.5 ?

It says fuel injection here https://www.car.info/en-se/honda/jazz/jazz-13-i-vtec-7897964/specs but doesn't say which type of injection. Both the 1.3 and 1.5 engines have the same bore but different strokes. I would have expected the engines to have the maximum number of common parts in order to simplify manufacturing and inventory.

We know that the Honda engines don't need their oil topping up between services but neither have there been any reports in UK of the oil level increasing.

[Jocko]

From my research it appears that the Jazz, from 2015 update, has direct injection in all models. I am willing to stand corrected as information is not easily found!

[sparky Paul]

From my research it appears that the Jazz, from 2015 update, has direct injection in all models. I am willing to stand corrected as information is not easily found!

I would think so, most petrols are going that way these days.

I hope they have managed to do something about the high pressure pump failures which plagued the early attempts at direct petrol injection in the 1990s.

[proxsteel]

For Gdi engines only.

Sent from my SM-A730F using Tapatalk

[ColinB]

is it just the 1.5 jazz engine that has a problem with oil dilution or the 1.3 as well

If that's the issue mentioned here https://clubjazz.org/forum/index.php?topic=11071.0 then I wouldn't lose any sleep about it. There needs to be extreme cold to cause sufficient fuel to not evaporate to cause this problem. UK winters are relatively mild.

The link posted by John Ratsey (and the onward link in that post) refers specifically to 1.5 turbo engines. AFAIK, the 1.5 in the UK-spec Jazz is normally-aspirated, therefore oil-dilution in extreme cold is not applicable to that car. To put it another way: don't worry about it.

[beerbelly]

From US Fit freak Forum :

Scotty Kilmer is a dipstick. His YouTube video blamed the problem on Honda's EarthDreams Direct Injection engine. He doesn't seem to be aware that the problem is with Honda's EarthDreams DI TURBO engine. That turbo engine is in the Civic and the CR-V and is causing all kinds of oil dilution problems in these vehicles in North America and especially China. There is no problem with the EarthDreams DI non-turbo engine as used in the Fit.

[jazzaro]

From my research it appears that the Jazz, from 2015 update, has direct injection in all models. I am willing to stand corrected as information is not easily found!

I would think so, most petrols are going that way these days.

I hope they have managed to do something about the high pressure pump failures which plagued the early attempts at direct petrol injection in the 1990s.

No, no doubt that my 2017 1.3 has indirect injection, and the 1.5 has direct injection. You also can check it  in Honda News website.

[culzean]

From my research it appears that the Jazz, from 2015 update, has direct injection in all models. I am willing to stand corrected as information is not easily found!

I would think so, most petrols are going that way these days.

I hope they have managed to do something about the high pressure pump failures which plagued the early attempts at direct petrol injection in the 1990s.

No, no doubt that my 2017 1.3 has indirect injection, and the 1.5 has direct injection. You also can check it  in Honda News website.

This site says 2015 1.3 model still had multi point indirect injection but 2017 facelift got direct injection. 

https://www.auto-data.net/en/honda-jazz-iii-facelift-2017-1.3-i-vtec-102hp-32643

[Jocko]

That is what I meant by information is not easily found.

[jazzaro]

https://hondanews.eu/gb/en/cars/media/pressreleases/125475/2018-honda-jazz-15-i-vtec
They talk about the 1.5 direct injection, but nothing about the 1.3 who appears unchanged, consumption data apart (but there's been the change from NEDC to WLTP).
Moving from indirect to direct fuel injection is not so easy, it means a deep change in an engine head. Honda knows how to do it, but I think they would have enlighted this major change. So, in my opinion, autodata is making a mistake.
Anyway, oil diluition is quite a common issue in GDI engines; in Europe it becomes an important problem, leading to early oil change, only in very cold weather and short trips: the gasoline dropped in the oil pan evaporates as  the oil temperature rise, so usually european gdi engines work fine.

[Downsizer]

Wikipedia has a section on Honda advanced technology, including this quote under the Earth Dreams sub-heading for 1.3 to 1.5 litre engines: "Employs VTC, direct injection technology and the Atkinson cycle using the DOHC, VTEC technologies as the base. Extensive friction reduction measures have been implemented."

[jazzaro]

Wikipedia has a section on Honda advanced technology, including this quote under the Earth Dreams sub-heading for 1.3 to 1.5 litre engines: "Employs VTC, direct injection technology and the Atkinson cycle using the DOHC, VTEC technologies as the base. Extensive friction reduction measures have been implemented."

Yes, but not together on both engines.