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Honda On Direct Injection: Don’t Wait For It; We Have Other Priorities
Last week, in our post on Hyundai’s new DI (Direct Injection) Theta II engine, we questioned Honda’s long-standing engine technology leadership. We also assumed (wrongly) that they would be joining...
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Hyundai: Direct Injection Has Its Limits
We’ve spilled a few pixels on these pages over Hyundai’s dedication to direct injection (DI) technology, even going as far as to crown Hyundai the “new Honda” of motor technology. But DI technology...
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Editorial: Do Not Buy A 2011 Mustang 5.0
What you see above is the cutaway of the Ford 5.0L mill, taken from the 2010 New York Auto Show. Formerly known as the Coyote V8, the 5.0-packed 2011 Mustang GT hit the showroom floors, winning rave...
View ArticleLooking Into The Future, Toyota Spots The Present
When Autoweek asks the R&D boss at an alt-drivetrain leader like Toyota what the future of its powertrain development looks like, one tends to hope for something revelatory in his answer. Instead,...
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BYD Scores Another Chinese First: Direct-Injection, Dual-Clutch Drivetrain
BYD made a big splash a few years back when it became the first Chinese automaker to develop a highway-capable plug-in vehicle. That announcement brought a flurry of publicity and a Warren Buffett...
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Piston Slap: Bustin’ Carbon Down Mexico Way!
TTAC commentator cacon writes: Hello Sajeev, I’m a long time reader, but not much of a poster. Anyway, I currently own a 2009 SEAT Leon (bought new, I’m from Mexico if you wonder how I got this...
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Piston Slap: D.I. Another Day?
TTAC Commentator edgett writes: Sajeev – I’ve got a 2007 BMW 335 which has a direct injection system. Although I enjoy the car, it has been through three fuel pumps in 35,000 miles and BMW has...
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Ask An Engineer: GDI Problems In A Nutshell
“Ask an Engineer” is hosted by Andrew Bell, a mechanical engineer and car enthusiast. Andrew has his MASc in Mechanical Engineering from the University of Toronto, and has worked on Formula SAE teams,...
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Review: 2012 Ford Edge Limited EcoBoost
Once upon a time, in a country known as America, SUVs roamed the land with large-displacement inline 6s, optional V8s, and locking axles. Nobody had heard of a “cute ute.” Of course, gasoline was...
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Piston Slap: A Solution to our Coking Problem?
Kurt asks: I’ve heard from maintenance shops and oil additive producers that DI engines, especially Audi and BMW, have severe problems with carbon buildup in their valve systems. Might be good to...
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Piston Slap: Inject Fuel Directly into…Oil?
Evan writes: Sajeev, I have a piston slap question for a friend at work. She drives an ’11 Mazda CX-7 2.3. For over a year she has had an issue with fuel in the oil. Enough that the oil level has been...
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Twincharging Is Volvo’s Replacement For Displacement
Engine downsizing is all the rage. Making the engine smaller increases fuel efficiency, reduces emissions and cuts vehicle weight. With ever tightening fuel economy legislation in the United States...
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Piston Slap: Fix My Beeeemer, Sanjeev!
Nitin writes: Sanjeev, I read your blog about the problem in BMW. I have a 2009 BMW 535i X drive with turbo. The car just ran out of warranty and has 45000 miles only. My car started having engine...
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Chrysler Group Introduces PUG Plan For Pentastar V6 Family
Fiat Chrysler Automobiles’ Chrysler Group has big plans for its venerable Pentastar engine family, all in the name of improved fuel efficiency and power. Automotive News reports the Pentastar Upgrade...
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Alfa Romeo Readies New Engines For 2015 Debut
Aside from rebuilding itself in North America, Alfa Romeo is set to introduce a new family of high-performance engines into the lineup, the first of which will come in the next six months. Automotive...
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Toyota Debuts New Turbo-Four For Auris Hatchback
A new option available to the Toyota Auris today, the automaker debuted the second turbocharged piece of its new engine family. The 8NR-FTS 1.2-liter turbo-four uses a single-scroll turbo paired with...
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Piston Slap: Oil Burning and Carbon Cleaning?
Looks legit. (photo courtesy: n0str9 @ forums.tdiclub.com) Arley writes: Sajeev, I have a 2003 Jetta TDI with 178k miles. Runs 100%. My mechanic recommends a carbon cleaning. What are the positives...
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HEMI Engine Family Receiving Upgrades To Fuel Economy, Power
Changes are coming to FCA’s HEMI engine family, ranging from increased fuel economy, to higher horsepower. Though details are scant, the 5.7-liter HEMI V8 could receive direct injection to increase...
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New Or Used: Wishing For Simpler Times
Hi Sajeev & Steve, “You have not covered extensively the problems encountered by GDI engines, especially Mitsubishi Dion (the engine is 4G63). As the revs go beyond the 2000 rpm, the ‘check...
View ArticleSpark-free SkyActiv: Mazda Seems Well Prepared for the Future, Without...
While it wasn’t the only car company to make use of a rotary engine, it was certainly the only one to be competitive with them when pistons and pushrods would easily have sufficed. However, those days...
View ArticlePiston Slap: Misfiring on Mazda 3 Skyactiv’s Diagnosis?
Brian writes: Hi Sajeev, You are my go-to guy for in-depth automotive knowledge. (Wow! Honored. – SM) My brother has been having a heck of a time with his 2012 Mazda3 Skyactiv. It’s got about 70k miles...
View ArticlePiston Slap: Earth Dreams of Carbon Buildup?
TTAC commentator KCFlyer writes: Dear Sajeev, I have a 2015 Honda Fit LX manual, purchased new. From day one I noticed a slight momentary hesitation under moderate acceleration when the engine was...
View ArticlePiston Slap: Roughing It in Tucson?
Steven writes: Hi Sajeev, I have a 2016 Hyundai Tucson 1.6T with 90K and I have an intermittent issue of a rough idle with the A/C on — it feels very jumpy and did not have this issue before. When you...
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