my white smoke parin khit after overhaul

[mikefernando]

i have a 1993 toyota xe. i just put a new headgasket head wasnt warped, new piston ring and replaced valve seal, runs great but smokes alot from exhaust white smoke. no over heating no rough idle no check engine light or eml light. doesnt start to smoke until about 3 -5 minutes after i start the car and let it idle. pls help me mga bro i really dont know what to do.

[mark_t]

Question : Who did the service?

You have just put in a new headgasket, Are you a mechanic?

Have you read your references?

[mikefernando]

yung mekaniko ko po ang nagpalit ng piston ring tska ung pinagpalitan nya eh hnd nmn putol valve sezl pinapalitan ko nrin pati spark plug, pag inistart ko ung kotse wala p usok pero habang tumataas n ung temp ngkakaroon n ng usok pero hanggang kalahati lng temp nya, bkit kya umuusok prin car ko?

[mark_t]

MEKANIKO ba talaga mechanic mo, nakita mo ba certification nya?

[mikefernando]

matagal n po syang mekaniko dun n nga po sya tumanda eh, ngwwork sya s huge auto shop company ung mga insured n kotse gngawa nila, im hoping n carbon deposit lang ung cause ng usok, khapon nga lng pala ginawa ung kotse ko kya hnd ko p nbbreak in

[iho250]

most probably palpak ang gawa...kasi i had white smoke din few weeks ago and valve seals lang pinalitan kasi ok pa piston rings and so far ok na, wala ng white smoke

[mikefernando]

pero db dpat kng palpak ung gawa, pagstart plang my usok n pero wala eh mag-iinit muna ung makina mga 3-5 minutes tpos, un uusok n

[KBR]

hey bro, its either the Valve Seal was not installed properly (may ilan siguro na hindi maayos ang pag install) OR the Piston Rings were not clocked in the right position.

also, bakit pinalitan ang piston rings?? may blowby ba yung engine before hand??

aite, peace.

[v6dreamer]

Bad valve seal or bad head gasket produce a passage for the antifreeze to pass from the capillaries into combustion chamber. Maaring nagtipid ka sa mga gasket kaya hindi maganda ang outcome sa pagkagawa. No offense, its only a CeNts.
Its easy to check if you have bad head gasket, all you need is air compressor and air noozle. Remove one of your sparkplug and the radiator cap fill the radiator w/ water and pump air in the sparkplug hole(do not put radiator cap) repeat with all the cylinder and watch for bubbles coming up into radiator. If bubbles are present the head gasket are blown and must be replaced.

[4JGtootsie]

Flush your muffler with water. Its possible that oil is still present in the exhaust system. Are you still in break in? Style of break in?

[mikefernando]

i think the installation is good, pero halimbawa b n ngkamali ng balik ung piston i mean ngkapalit ng pwesto my epekto b un, wla nmn blowby ung piston or piston ring nabuksan na rin lang kaya pinapalitan ko n para isang bukasan nalang tsaka kung kotse lang ang pag-uusapan hnd ko titipidin un hanggat maari nga kung my original n mabibili dito un ang bibilin ko cge try ko advice mo v6dreamer thanks.

pano nga pala magflush ng water s muffler sir 4jgtootsie? im still in break in hanggat maari nga ayoko lumagpas ng 40 km/h takbo ko eh

[SunTzu]

Ideally, after overhaul, your engine should work like a champ. No smoke, more power, and smoother transition.

In your case, there is something wrong with your mechanic and/or the parts (or installation). Backjob yan of course, translated to additional hassle.

Good luck.

[rion]

Flush your muffler with water. Its possible that oil is still present in the exhaust system. Are you still in break in? Style of break in?

it is possible indeed... since you are not noticing any problems aside that.

[dennis powell]

ang tanong ay kung may drivability concern ka ba sa kotse mo? like misfire, high idle,or low idle.nababawasan ba ang coolant ng kotse mo?if all things are normal, then it is just as simple as overfilled engine oil.check your engine oil first before you blame your mechanic,because sometimes things could happen,like for example in cooling system,pagkatapos mo gawin ang sirang waterpump and while your in the process of performing system test, another thing gets break which is not a mechanics fault,its just happen na yung system during the process it has an excessive pressure which flows going back and forth to the engine and at the same time this flows tend to look for an exit from that system until they find that weakest link (weak parts) which is as saying "when it breaks it breaks" and the flows continue to flow.

now check your engine oil,coolant fluid,or go back to your mechanic and tell them about your concern.

[dennis powell]

sorry; what i mean is that the flows continue to loose

[tip_tipid]

dinala ba sa machine shop yung engine block mo para i-hone o kaya i-rebore
para sa ayos na pag kaka bilog ng cylinder walls para na din lumapat ng husto ang bagong rings na ikinabit ng mekaniko?

[4JGtootsie]

I will reserve my diagnosis until you flush the exhaust system.
Run your car at normal operating temp then turn it off. Put a hose inside your tale pipe as far as it can reach. Turn the water on and let it overflow. This may sound scarry for a newly overhauled engine but rev it at high throttle then engine off. Repeat the procedure to 2-4 times.

[tip_tipid]

scary talaga iyan, eh paano kung makarating sa cylinder ang tubig sa hose?
possibleng makapasok siya sa open na exhaust valve sa isa sa mga cylinders, di bah? do you have a better recommendation?

[4JGtootsie]

Ideally, after overhaul, your engine should work like a champ. No smoke, more power, and smoother transition.

A newly overhauled engine will gradually increase power, lessen smoke and run cooler as break in progresses. The piston rings are not yet properly mated to the cylinder walls making tight seal and efficient compression poor.

I believe in driving hard on break in. The engine needs load to seal the gaps between the rings and hone (peaks and valleys). Just imagine a parachute will it open when you run around the driveway, it will open after you jump plane or a very tall building.

[4JGtootsie]

scary talaga iyan, eh paano kung makarating sa cylinder ang tubig sa hose?
possibleng makapasok siya sa open na exhaust valve sa isa sa mga cylinders, di bah? do you have a better recommendation?

Bago umakyat sa exhaust manifold lalabas na excess water sa tail pipe. The level exhaust ports is much higher than the muffler and after manifold piping.

Try doing it before an emission test and you will understand what I mean.