revving up your diesel ride first before shutting it down?

[TJMaxx]

Tinatamad ba silang palitan yung mahina nilang batterya?

[praktikal]

the word is, "nakasanayan".

karamihan sa gumagawa nito ay nasanay na sa ganung gawain at ang iba naman ay namana na lang din dahil yun ang "sabi nila".

hindi daw tama na i-rev up bago patayin kase maglalaglagan ang mga oil/lubricant ng engine na dapat ay nasa wall lang nito. tsaka mangangamoy usok pa garahe mo, hehe.

kasabayan yata nito ang isyu tungkol sa pagpapainit ng makina bago umalis. dati kase sabi 3-5 munites daw painitin ang makina bago patakbuhin... ay sus! sa mahal ng krudo, ubos tayo dyan. hehe. 30 sec the most tapos takbo na pero wag lang paandarin agad ang aircon.

[Boy Torotot]

pang old cars lang ang ganyan. yong mga mahihina pa alternator o kaya naka-generator pa. ngayon na modern na mga sasakyan, hindi na kelangan yan. kahit yong warm up, di na din kailangan.

eto lang yong mga naririnig kong dahilan in doing this for old cars:

para daw kumarga ang battery. yung mga nka lumang gas engines naman, para daw mapuno ng gas yung sa carbs, mas madali daw mag start kinabukasan. duh.

ginagwa dw po iyon pag rev before shut down is para mag kalaman yung carbuerator ng gasolina para dw mas mabilis mag start

[rsnald]

yun nabasa ko sa isang book or magazine yata, di daw good practice to rev up the engine before shutting down coz when your rev up the engine, the oil drains off from the cylinders or something. so pag start up mo the next time around, mas konti lang yung oil that's present on the engine cylinders, it will contribute to premature damage to the engine cylinders daw kasi less lubrication during start up. that's if you always do that practice.

as to why, alam ko rin old practice sa gas engines. aside from getting fuel to fill up the carburator, para din yata ma flush out any excess fuel sa engine para di "lunod"/flooded yung engine with fuel the next time you start your car. pag lunod kasi engine, di mag start up agad. yun ang pagkaalam ko.

[JagXtrm]

our 3-cylinder diesel kubota farm tractor needs to rev up para ma-off ang engine nya.

kasi pag nag switch off ka lang ng ignition, umaandar pa rin ang engine pero di na nacha-charge ang battery... isang way to shut the engine down habang naka idle ay i-choke mo yung engine.

dahil mahirap mag choke ng engine (todo hatak sa choke cable na parang brake cable ng bikes at masakit sa kamay), mas madali i-rev mo na lang ang engine tapos pagbitaw mo ng gas pedal mamamatay na ang engine.

pero sa everest ko di ako nagre-rev up kasi may turbo timer naman yun.

[Memphis Raines]

no,,,bad habit..

Tama po.

Even during the '70s, this was the popular belief by old school drivers but really you are just wasting fuel. Even for gas car engines. I don't see any benefit in doing so.

Nakakatawa nga nung minsan may pumunta sa bahay namin then the young driver revved up the car before turning it off. I asked him why does he do that. He simply said "Wala lang. I learned it from my Dad.."

[XTO]

no no reserve ko na lang ang diesel by the time mag exhaust cleansing.

[pup2]

Palagay ko nauso ito in the old days because fuel was CHEAP but batteries were expensive and electricals weren't sophisticated enough to make a battery last more than a couple of years even with moderate use.

Sure, nowadays it seems silly -- but the situation has been totally reversed. It therefore pays to keep asking WHY -- and to do so continually.