diesel overheat, ano epekto sa makina?

[[archie]]

hi fellow tsikoteers,

preventive measure question lang po...

my moms starex (2001 ata yung year) nagoverheat sat and sun. the first time, my sister was driving it papuntang laguna pansol... hindi niya napansin na overheat na coz she really do not care hehehe. so nakarating kami sa destination namin. then engine smells burned and i was so tired that day and decided to check it out the next day.

on our way home, i was the one who drove home... nakalimutan ko check water level and oil bago umalis. then we caught traffic and felt the engine was a little off, then check the gauge... yun na nga, its overheating again.

stopped at a gas station to check water, then wala na laman talaga... while doing the refill i did what i think is right for gas engines. i kept on running the engine while filling it up.

the question is, may madadamay ba sa engine kung ganto nangyari? what are the possible damages that may arise from that?


i really know nothing when it comes to diesel engines.

maramimg salamat po sa mga magreply...

[Cobalt Blue]

Standard for gasoline is check the cause of the overheat first such as hoses water pump radiator leaks defective radiator cap sometimes is the cause, thermostat and aux fan. then check the oil, spark plugs, cracked cylnder head pistons and belts maybe checked due to intese heat it may show some wear. Usually modern cars have a safety feature that the engine will not continue to run if ever it reached a certain level ng temp kasi sa ibang cars when you look at the guage there is an allowance to the cars limit some guages go over the top when it is overheating really bad such as H mark or red line.

[[archie]]

sir tama po kayo, got it to a mechanic kanina lang then water pump nga yung bumigay. then sabi ko na din, change all fluids para PMS na din. also yung timing belt and fan belts na.

pero sa diesel po ba ano mainly tatamaan sa overheat? sa gas engine po, i know na pistons will definitely have damages na.

hindi naman po umabot sa red area ng temp yung needle, pero sobrang lapit na, buti na lang may malapit na gas station para maglagay ng water kagad.

[mark_t]

Obserbahan mo lang muna, normal lang yan nangyayari pag nag fail na ang water pump,
sana nga hindi umabot sagad sagad overheat. Everybody experiences that when it is
time to replace any components in the cooling system.There is no way you can
do preventive maintenance on your water pump, you really wait for that to fail. And dont use just water for coolant, use a proper radiator coolant, huwag ka manghinayang bumili ng coolant, I think it is the only preventive maintenace you can do for your cooling system.

Diesel engines are quite tough, I've a number of overheating experiences as well caused
by water pump failures, and a number caused by my little cousins who will take and keep radiator caps for toys, so far no damage. After a number of overheating, you will love your diesel engine.

[[archie]]

ganon po ba? salamat sir mark t... this is the first time that the water pump failed sa diesel and wala talga ko alam sa mga diesel engines, sige po observe muna engine.

thats good to know, that your engine has not experienced any failures after a number of overheatings.

thanks so much sir!

[speedyfix]

if there was any damage done to the engine it happened during the overheat and not when you were filling with water. check kung nagbabawas parin sya tubig or if naghahalo water and oil. if so you will have to open up the engine to fix it.

[Cobalt Blue]

Since di ka umabot sa redline hindi naman siguro na damage ung engine mo maybe the belts may have shorter service life due to high heat stress and engine oil rin may be degraded of it's quality. Good moove yan change fluids para isahan na kasi you never know what execssive heat can do to the system. Ang pagka alam ko rin is diesel mas matibay sa gasoline. Ung Corona namin twice nag overheat dahil ung driver di marunong kaiinis water pump ang sira pero ngaun ok naman wala problema.

[[archie]]

ahh ok so unless theres no unusual behavior ng engine it would be fine... sir speedy nabawasan ng konte yung oil niya. would you recommend na change il na or dagdagan lang yung nabawas? kasi kakachange oil lang recently. mga 2k palang milage.

sir cobalt, crossing fingers nga kami while observing the engine. sana walang maging prob na yung car.

maraming salamat po pips for the replies.

[voltscastillo]

badly overheating a 4d56 engine almost always results in cylinder head warpage. a vicious cycle then begins: warped head = overheat.

but your starex's engine, while looking a lot like a 4d56TDIC, could quite possibly have better internal design, so i guess your engine's ok.

[[archie]]

naku sir volts, wala ako alam sa engine code ng mga diesel...

in layman's term, my moms starex is ok... tama po ba?

[4JGtootsie]

cylinder head gasket and head refacing if you start to lose water and/or oil. If cast iron ang head then matibay tibay yan but kung aluminum alloy like that of the 4d56 its possible na nagwarp. But the best thing to do is observe engine fluid levels especially the overflow container for oil, exhaust fumes or boiling noises.

[voltscastillo]

naku sir volts, wala ako alam sa engine code ng mga diesel...

in layman's term, my moms starex is ok... tama po ba?

it ought to be... hindi na naman nag-recur right?

weird thing abt diesels... not enough heat, masisira, too much heat, masisira. i used to own a pajero turbo diesel intercooler (tdic) with a 4d56 engine visually similar to the one in your mom's starex. and a single major overheat in those mitsu engines = very bad news. i think dun galing yung mechanic's rule na once mag overheat ang kahit anong makina antimano general overhaul agad. that's how fragile those damn engines are. bad piston rings from the get go pa daw, so madaling mag blowby. i hope hyundai has corrected these design flaws kasi maganda on paper and theory yung design ng 4d56. makes decent power too.

if you start smelling the awful tang of oil and metal in your coolant... cracked cylinder head. ditto if it suddenly turns oily. if the head warped it'll be a nightmare until you replace it.

check your oil too. if it turns into any color other than black or its orig color... coolant contamination into oil = warped/cracked head. water and oil don't mix, so oil usually turns into a milky brown color once coolant enters it.

BUT, don't worry too much. i'm sure your diesel's ok.

[[archie]]

* 4JGtootsie -- the boiling noises suspect a damaged head?
ok ill look out for those signs na sinai niyo. sana lang wala talaga... o ya, yung refill kami ng water sa gas station, theres the boiling noise at first tapos nawala naman after mapuno na ng water. is that also a sign?

* volts -- sabi ng sister ko 1 week na daw na laging walang aircon, so suspetsa ko since that time, overheat na hindi lang nila pansin.
yung nasa laguna po kami, the engine smelled burned metal and parang hindi normal... that was the day before i was the one who drove and noticed the overheat.

sige po, ill check the oil once in a while if it turns to another color...

sana nga po walang prob na lumabas, kasi laging driver lang mom ko kung metro manila and i dont live with her kaya every other week ko lang nakikita yung van.

sana talaga, walang naging sira yung engine niya :pope:

thanks po sa mga reply.

[4JGtootsie]

That boiling noise is actually real boiling water/steam because of the overheating. The boiling sound that i am saying is exhaust/compression gasses escaping from the head gasket into the water gallery. Overheating engines usually experience head gasket failure which sometimes also lead to premature rapid increase in temperature and/or premature loss of coolant(water).

[[archie]]

ahh ok, kala ko naman yung sa pagrefill pa lang meron na kagad damage yung car namin... hehehe

thanks sir, will take note of the signs and observe the van when i can.

[Dieseldude]

Effects of engine overheat:

1. No effect if engine temp was not too high, and if engine was not operated for an extended time in overheat condition
2. Damaged cylinder head gasket
3. Warped or cracked cylinder head
4. Scored pistons and sleeves.

Damage depends on the actual temperature, the presence or absence of coolant in your engine, and the extent of time the engine was used in oveheated condition.

[speedyfix]

smell the oil. in bad cases of overheating the oil will smell very burnt. if ganun na replace it coz it will loose its lubricating properties.

[Sardinas]

hi guys just wanna share. my 02 crosswind overheats last sunday. natuyuan po ako ng tubig! got a major crack in the lower part of the radiator!. what happend is that nasa gas station kami at naka idle with aircon kasi kumakain kami with my wife and baby. tapos i noticed ang hina ng idle parang mamatay ang makina so i turn off the engine and when i open the hood ayon overheat. steam coming out in the dipstick tuyong tuyo ang radiator at reservoir ko! bad thing is that i noticed this mga 20 mins ago and i ddnt care i just turn the idle shift knob a little bit higher and drove a couple of kilometers. i really dont know what wil happen to my crosswind. then i followed all the procedures in dealing with overheating engines. then the next day i flushed the radiator and repair the damn thing. sa awa ng diyos ok pa naman yong sasakyan hinahataw ko talaga so far normal temp pa naman at still under observation pero 2 things thats unusual is that when i turned the engine on, it will take like only more or less 8 mins for the temp of the engine to go normal (center yong needle) kasi dati it will take more more time than that! and also yon radiator ay may awful smell d ko alam kung ano yon basta not pleasant . i need help on the 2 unusual things. d ko alam baka cracked cylinder head ba o major prob na

[4JGtootsie]

Cylinder head usually warp ang block ang nag kakacrack. Matibay ang engine na yan. Kung wala pang katok ang engine and walang oil or water leak around the block and head then it survived your torture. Observe the cylinder gasket area kasi isa yan weak link especially kung nag warp ang head. Baka yung awful smell is baked coolant additive. Doon sa dipstick, are you sure steam ang lumabas? How is your oil? Milky color?

[Sardinas]

Cylinder head usually warp ang block ang nag kakacrack. Matibay ang engine na yan. Kung wala pang katok ang engine and walang oil or water leak around the block and head then it survived your torture. Observe the cylinder gasket area kasi isa yan weak link especially kung nag warp ang head. Baka yung awful smell is baked coolant additive. Doon sa dipstick, are you sure steam ang lumabas? How is your oil? Milky color?

the mechanic checked the engine and told me that the engine is fine. walang katok. sa awa ng diyos smooth pa din ang makina ko hehe. hinahataw ko pa din for the past 5 days and all is normal and nothing unusual.checked the dipstick and oil color is normal (black hehe). no unusual behavior of the engine so far.the mechanic told me that "yang engine mo ang pinakamatibay na diesel engine dito satin at di basta basta bibigay yang mga isuzu" kya from now on im very cautious in checking the water and radiator . first time ko kasi yon nangyari sa buong buhay ko hehe. buti nalang isuzu yong sasakyan ko at nabigyan pa ako ng 2nd chance. hehe now i believe this brand is tough!

and oh yeah steam talaga ang lumbas sa dipstick. shock ako kala ko puputok na ung makina