Just curious

[BlkZoomZoom]

I had a customers Mazda3 2.3 manual in a couple of days ago complaining of a rough idle condition. No dtc's, fuel trims good., spark advance good., MAF & MAP sensors reading correctly...etc. It took me ALONG time to figure out what was wrong with the car. It ended up being the Intake camshaft being off around 4*. I was just curious if anyone else has a rough idle condition or if anybody's heard of any other 3's that had this problem?

 

[AzMz3]

I had a customers Mazda3 2.3 manual in a couple of days ago complaining of a rough idle condition. No dtc's, fuel trims good., spark advance good., MAF & MAP sensors reading correctly...etc. It took me ALONG time to figure out what was wrong with the car. It ended up being the Intake camshaft being off around 4*. I was just curious if anyone else has a rough idle condition or if anybody's heard of any other 3's that had this problem?

Being a Ford engine, I'd bet alot of Mazda3's are like that. Most will have different cam settings from the factory. A cam alignmennt tool will be out soon to fix and give alittle more HP. Mine is kinda smooth, but with only 2500miles on it.

--Herb--

 

[netranger6]

It is not a Ford engine, quit following what others post and believing it.

 

[Mazda3]

Being a Ford engine, I'd bet alot of Mazda3's are like that. Most will have different cam settings from the factory. A cam alignmennt tool will be out soon to fix and give alittle more HP. Mine is kinda smooth, but with only 2500miles on it.

--Herb--

The engine is 100% Mazda. Please keep your uninformed comments to yourself.

 

[AzMz3]

The engine is 100% Mazda. Please keep your uninformed comments to yourself.

LOL...Right...Well being a Duratec engine and Identical to the engine in the Focus I still say that that cams are miss aligned from the factory. 100% Mazda.... :bs:

---Herb---

 

[Mazda3]

LOL...Right...Well being a Duratec engine and Identical to the engine in the Focus I still say that that cams are miss aligned from the factory. 100% Mazda.... :bs:

---Herb---

Its not a Duratec engine and its not the same engine in the Focus. Get a clue.

 

[AzMz3]

Its not a Duratec engine and its not the same engine in the Focus. Get a clue.

Funny how many duratec tuners have said otherwise. And also how they are making parts that are compatible. This is not a new engine, there are and have been internal parts for it. The only difference that I know of between the Focus 2.3L and the Mazda 2.3L is the VVT other than that they are identical. So get you get a clue, quit crying about Ford. Or better yet post so facts, links or anything but your opinion.

---Herb---

 

[ZippityZoomZoom]

Funny how many duratec tuners have said otherwise. And also how they are making parts that are compatible. This is not a new engine, there are and have been internal parts for it. The only difference that I know of between the Focus 2.3L and the Mazda 2.3L is the VVT other than that they are identical. So get you get a clue, quit crying about Ford. Or better yet post so facts, links or anything but your opinion.

---Herb---

And when are you going to follow your own advice? Post your facts, links and proof. Hmmm?

 

[TheMirror]

Some research revealed the following:

The 2.0 and 2.3L Inline 4s in the Mazda 3 are part of Mazda's MZR engine family, which is offered worldwide in displacements of 1.4, 1.6, 2.0, and 2.3L for the gasoline engines. Also offered from this line are 1.4, 1.6, and 2.0L common rail diesel engines. I believe the diesel versions are SOHC. The 2.0L 4cyl. in the current Focus is from Ford's Zetec line, and the 2.3L offered in 2004 for the ZTS and ZTW is a reworked Mazda MZR engine. Its subsequently been renamed the Duratec 23E.

http://www.edmunds.com/new/2004/ford/focus/100327695/roadtestarticle.html?articleId=101294

The Ford engine, the Duratec23E, is found in the 2003+ Focus. It is designated a PZEV (partial zero emissions vehicle) engine. This Ford version of the Mazda MRZ engine was apparently co-developed by Mazda and Ford, using casting technologies developed by Cosworth.
-Mirror

 

[AzMz3]

http://www.ofoc.ca/news/news_2003_10.html

The new engine family also is leading the way in modern, cost-efficient manufacturing. Four plants on three continents will build Duratec I-4s, and all will benefit from the efficiencies and quality improvements offered by flexible manufacturing techniques.

A number of Ford and Mazda brand vehicles currently offer or will offer the new engine in both "east-west" and "north-south" configurations for front- and rear-drive applications.

In addition to the Focus, these applications include:

* Ford Mondeo, with 1.8- and 2.0-liter versions, built at Valencia Engine Plant in Spain.
* Ford Ranger, with the 2.3-liter variant built at the Dearborn (Mich.) Engine Plant.
* The restyled Mazda MPV minivan built at Mazdas Hiroshima plant in Japan.
* The all-new Mazda6 (sold as the Mazda Atenza in some countries), which is sold with displacements of 1.8-, 2.0- and 2.3-liters, depending on the market.
* Both the Ford Escape Hybrid, which will debut next summer, and Ford Futura, which will launch in 2005, will use derivatives of the 2.3-liter engine.

This is one of the facts I base my information off of. Other are that many tuners even some that are making parts for the Mazda3 and Focus 2.3L have stated the same. I found statements saying that yes Mazda did rework the 2.3L, How did they? Buy adding S-VT to give the Mazda more HP and TQ.

---Herb---

 

[TheMirror]

Great article! Lots of good info in there! In regards to the Mazda6, I think the info gets a little mixed up. The Mazdas are all currently using the MZR engines. The Ford Duratec version is only avaliable in 2.3L guise at this time, with a 2.0 coming in 2005. Its possible that future Mazda 6s will use the Duratec version to comply with PZEV standards. Pass me some links to some of those tuners if ya could. I'm interested to see what they are saying. From the way I see it, Mazda designed the basic MZR architecture, and they they co-ventured with Ford to create the Duratec 23E, not the other way around.

OK, a little more searching pops this up. Pretty confusing this Ford/Mazda backdoor love affair. The more pertinent info is at the bottom of the article.

http://www.mazda.com/mnl/200204/jisedai.html

A little more info:

http://www.mazda.com/environment/2002/2002/02.html

I may be wrong about the MZR engine displacements. It looks like the big MZR comes in 1.8L, 2.0L, and 2.3L versions. There seems to be a small (?) version with 1.3 and 1.5L displacements. Then I read about 1.4L and 1.6L MZR variants. This is nuts.

More info below. See page two, everyone. I don't think this is quite right either, I don't think Mazda did the design work on the Duratec 23E. I think that was mostly Ford.

http://www.autotechdaily.com/pdfs/T10-13~1.PDF





Cheers,
-Mirror

 

[wongpres]

Mazda does have 1.3, 1.4, 1.5, 1.6 engines, but as I mention at the sticky at the top of this thread, those are another engine family (even though they are often referred to as MZR - it's all marketing & PR).

From the Mazda-side, these two engine families debuted along with the introduction of the Mazda6 and Mazda2. Because the Mazda3 is in the middle of these cars, no new engines were needed (the entire Mazda3 engine range goes from the larger Mazda2 engines to the smaller Mazda6 engines).

 

[TheMirror]

Great info! OK, that was mostly how I figured it went, aside from Ford supplying the block. I think you'll be OK with that sticky, as this will be a question that will come up a million times in the future. That's sort of the reason I doggedly pursued the info. It wasn't to prove myself right or anybody wrong, I just want to nail down this somewhat nebulous info once and for all.
-Mirror

 

[BlkZoomZoom]

A little update.....The engineers from Japan are coming to investigate this engine,apparently this isn't the only engine to have done this but it is the first to have had both the intake and exhaust cams to have skipped on seperate occasions. Should be interesting supposedly they don't speak hardly any english.