Toyota Innova J gas or diesel?

**KIANTOT** · February 13th, 2012 08:43 PM

Originally Posted by SEALANDER

Matanong ko lang...bakit sinasabi ng iba na "mahirap" mag maintain ng diesel. Ano ba mahirap sa pag change oil, change fuel/air filter, rotate tires, check brakes etc. na ginagawa din sa gas variant as PMS? at pag more than 5 yrs gagamitin huwag diesel. Hindi ba tumatagal mga diesel engines? Eh bakit ung mga PUJ wala nga regular PMS pero tumatakbo pa din.

Yung sinasabi nila na mahirap imaintain yung CRDI, pero ang old school diesel madali imaintain kase sa old diesel engine pagnagkaproblema yung fuel system maraming ordinary calibration shop na available hindi tulad ng sa CRDI bihira pa yun nga lang we will have to wait kung kailan magkaroon ng maraming parts na available kahit saan or dapat magproduce sa atin locally para mas mura, yung PUJ sir hindi pwedeng walang PMS yan, mas madalas pa nga dahil weekly check up yan

**kompressor** · February 13th, 2012 10:38 PM

For me, hindi mahirap i-maintain ang CRDI. Napapamahal lang ang maintenance kasi overpriced masyado ang casa pero ang logic ng fuel delivery ng CRDI is same with an EFI gas engine which is dependent on an ECU that receives signals from sensors. Mas ok pa nga ang CRDI kasi wala kang ignition system na aalalahanin unlike a gas engine na both fuel delivery and ignition ang mina-manage ng ECU.

Pareho lang halos sa EFI gas engine na you change oil, change air and fuel filters, have sensors (crank position, AF, O2, etc) cleaned on intervals, change fuel pump pag bumigay (I'm optimistic na magmumura in the long run ang CRDI high pressure fuel pumps just like the first EFI car fuel pumps na napakamahal din dati pero look at them now, dami na murang OEM replacements), minus the HTW's, ignition coils and spark plugs na wala ang diesel. Mas marami lang ang oil na ginagamit ng CRDI coz of the turbo's presence pero bawi mo agad ang operating cost ng additional oil due to fuel cost and km/liter ratio savings.

**meledson** · February 13th, 2012 11:12 PM

Originally Posted by revoGSX

sir.. personal vote ko is Gas J or E...easy to maintain in the long run..

anyway, ask ko lang, na-consider po ba ninyo all new 2012 avanza? it would probably take at least 6 years bago lumabas yung next model

yung current Innova (from 2005) is on the last generation na and baka po bigla lumabas yung "all-new" next year.. baka lang po hehe

basically every 3 years. 2007, 2010 (?), 2012.

**SEALANDER** · February 14th, 2012 03:49 AM

Originally Posted by KIANTOT

Yung sinasabi nila na mahirap imaintain yung CRDI, pero ang old school diesel madali imaintain kase sa old diesel engine pagnagkaproblema yung fuel system maraming ordinary calibration shop na available hindi tulad ng sa CRDI bihira pa yun nga lang we will have to wait kung kailan magkaroon ng maraming parts na available kahit saan or dapat magproduce sa atin locally para mas mura, yung PUJ sir hindi pwedeng walang PMS yan, mas madalas pa nga dahil weekly check up yan

Siguro ang issue dito hindi sa MAHIRAP mag maintain kundi mas MAHAL mag maintain. Sa tingin ko kung regular ang PMS hindi na aabot sa calibration. Para sa akin yung mga PUJ's walang regular PMS yan kasi makikita mo sa kalye kung paano nbumuga ng maitim na usok ang mga yan. Para mas maintindihan natin ang mga diesel engine allow me to share this. I'm sure once you've read this you will agree na hindi MAHIRAP mag maintain ng diesel engine:

To understand the problems that you and many other diesel-engine-vehicle owners encounter, we need to take a quick look at how a diesel-fuel system works.

Like any internal-combustion engine, a diesel engine has a tank, a fuel filter, a fuel pump, and a fuel delivery and metering system. In a gasoline engine, the fuel delivery and metering system can be a carburetor or an injector. In diesel engines, it's the injection pump and injectors.

Fuel is stored in the tank, and it travels to the injection pump and injectors after it passes through the fuel filter. What's critical in prolonging the component life of your engine is the fuel filter. Its job is to catch and prevent contaminants from getting to either the injection pump or the injectors. The contaminants include water, microscopic particles and bacteria, which may clog the fuel system over time.

When any of the components gets clogged, you get poor engine performance because there is no longer sufficient fuel getting to the engine.

On the other hand, when orifices inside the fuel metering system wear down, you are getting much more fuel than required. When that happens, you will see black smoke coming out of your tail pipe.

Either way, you need to get to a diesel center to check the condition of your vehicle's injection pump.

This is what happens during calibration: The line to every injector is checked for pressure and flow-rate capacity. They are calibrated to standard specification as required by the engine manufacturer. Anything that is out of spec is rebuilt, reconditioned, and parts are replaced when necessary.

Unfortunately, injectors are often neglected. Why do they need to be replaced? The answer is simple. They are part of the fuel delivery and metering system, and they are subject to a much harsher operating environment compared to the injection pump. If you are not going to check them for flow rate, volume and spray pattern, and if you don't rebuild them as necessary at the same time you have your injection pump calibrated, you're wasting resources and time, particularly when there's a drivability problem with the vehicle.

Recently, fuel companies have been coming out with diesel fuels claiming to offer better performance while being cleaner and less harmful to the environment. To my understanding, these products have been blended with additives that enhance certain properties of the fuel for the engines to run smoother and cleaner. Do note that if the mechanical aspects of the engine mentioned above aren't in proper working order, then fuel can only do so much.

To minimize clogging and contamination I would use a very good fuel filter, choose where I get my fuel and change the fuel filter at a much shorter interval than required by the vehicle manufacturer. It's cheap insurance against a much more costly fuel system failure.

**markduguran** · February 14th, 2012 09:26 AM

Originally Posted by revoGSX

sir.. personal vote ko is Gas J or E...easy to maintain in the long run..

anyway, ask ko lang, na-consider po ba ninyo all new 2012 avanza? it would probably take at least 6 years bago lumabas yung next model

yung current Innova (from 2005) is on the last generation na and baka po bigla lumabas yung "all-new" next year.. baka lang po hehe

Yes sir we have considered the all new avanza. pero considering the long rides (hi-ways included) that our new vehicle will trek almost every weekends and once or twice a week....we have decided that innova will be a better choice since its more stable and roomy. but still no final decisions yet. our budget is only limited to the Innova J variant. Still convincing my wife to consider the D4D.

**kompressor** · February 14th, 2012 04:46 PM

Once nakasubok ka na ng turboed common rail diesel, you'll never look at diesel engines the same way again. Go for the D4D!

**ericson21** · February 15th, 2012 12:55 AM

yung "mahirap" na term sa pag maintain ng diesel dito is di naman siguro literal na mahirap. parang ang tinutukoy is yung presyo, mas mahal. yun lang naman yata yun. :D

D-4D all the way!