2SZ-FE - direct or port injection? - Toyota Yaris Forums

komichal · 02-01-2022, 03:58 PM

Hi All,
I have always thought that my 2007 Yaris with 64kW 1,3 2SZFE engine has direct injection - it was also supported by some bits and pieces of information on Wikipedia.
However, based on some other findings, it seems that there are several sub-families of the SZ engines and the EU 2SZFE version is actually port/indirect injection.
Does anyone have by any chance some reliable source of information that could clarify this once and for all?
I guess one guaranteed solution would be to take out one injector and use a bore camera to peek in where the injector tip actually goes... but I guess there must be some official info somewhere.
Thanks in advance... I would be delighted to have the indirect injection so that I do not need to care about carbon buildups....

ex-x-fire · 02-02-2022, 07:24 AM

According to wiki it is. An easy way to tell is if the injector is mounted on the head, near the spark plug, it's direct injection. If it's on the intake it's port injected.

ex-x-fire · 02-02-2022, 07:27 AM

Direct injection doesn't help with carbon build up, it's actually a problem on those types of engines. The fuel doesn't cause carbon, it's the oil that gets in the intake. Fuel acts like a solvent to keep the valves clean.

Turbiini · 02-06-2022, 04:01 AM

2SZ-FE is port injection in toyota engine codes E means injection, direct injection is SE. If it was direct injection engine code would be 2SZ-FSE

komichal · 02-06-2022, 03:11 PM

Thanks folks and thanks Turbiini for more light on this topic. Thats good that it has port injection.

02-01-2022, 03:58 PM	#1
komichal View User's Garage Drives: Yaris 2007 1.3 2SZFE 64kW Join Date: May 2012 Location: CZ Posts: 297	2SZ-FE - direct or port injection? Hi All, I have always thought that my 2007 Yaris with 64kW 1,3 2SZFE engine has direct injection - it was also supported by some bits and pieces of information on Wikipedia. However, based on some other findings, it seems that there are several sub-families of the SZ engines and the EU 2SZFE version is actually port/indirect injection. Does anyone have by any chance some reliable source of information that could clarify this once and for all? I guess one guaranteed solution would be to take out one injector and use a bore camera to peek in where the injector tip actually goes... but I guess there must be some official info somewhere. Thanks in advance... I would be delighted to have the indirect injection so that I do not need to care about carbon buildups....

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02-02-2022, 07:24 AM	#2
ex-x-fire Drives: 2010 yaris 3 door hatch Join Date: Jun 2013 Location: Sheboygan Falls, Wi. Posts: 506	According to wiki it is. An easy way to tell is if the injector is mounted on the head, near the spark plug, it's direct injection. If it's on the intake it's port injected.

02-02-2022, 07:27 AM	#3
ex-x-fire Drives: 2010 yaris 3 door hatch Join Date: Jun 2013 Location: Sheboygan Falls, Wi. Posts: 506	Direct injection doesn't help with carbon build up, it's actually a problem on those types of engines. The fuel doesn't cause carbon, it's the oil that gets in the intake. Fuel acts like a solvent to keep the valves clean.

02-06-2022, 04:01 AM	#4
Turbiini Drives: 1983 carina 2NZ-FTE Join Date: Dec 2020 Location: finland Posts: 34	2SZ-FE is port injection in toyota engine codes E means injection, direct injection is SE. If it was direct injection engine code would be 2SZ-FSE

02-06-2022, 03:11 PM	#5
komichal View User's Garage Drives: Yaris 2007 1.3 2SZFE 64kW Join Date: May 2012 Location: CZ Posts: 297	Thanks folks and thanks Turbiini for more light on this topic. Thats good that it has port injection.