help! spark plug may langis

[cesar]

Dude, advise naman how to eliminate langis sa spark plug ko. Sabi ng iba valve seals papalitan na, top-overhaul na ba ang gagawin dito? Pwede kayang ipagawa ito sa mga shops na subok na sa ganitong problem?

[theveed]

valve seals malamang yan... i think 200 lang per seal... you'll need 4

while to top is removed, you might as well replace the valve cover gasket and timing belt/tensioner bearing

[cesar]

Thanks theeved, kahit ba sa simpleng mechanic kaya nila ito? do they need to have it top-overhauled? Ano ba ang effect nito kung di ko pa mapapagawa? Will it affect tha performance of the engine? BTW, my ride is '98 GL Revo, pls. advise as I'm really worried on this case.

[1D4LV]

cesar, i'm not mr. theveed pero i want to share my idea.

i think hindi nila kailangan i top overhaul yan. kailangan lang i-replace yung valve seals. and tama si mr. theveed. if ever due na rin for replacement yung timing belt mo, pwede mo na ring isabay yan.

ang magiging effect nyan if ever is insufficient burning the fuel dahil basa nga yung plugs mo ng langis, which will also result in higher oil consumption and higher smoke emission.

[boybitz]

pano palitan without removing the top? as in susungkitin mo lang palabas?
sorry, have no idea e :mrgreen:
2 of my plugs may konting oil deposit din sa thread eh.

[verto]

boybitz/cesar,

valve seals can be replaced either by top overhauling or pwede rin sungkit/dukot... though if ur engine is due for timing belt/chain replacement, isabay mo na rin, para isang trabaho na lang...

on the side note, kung may langis ang sparks mo maraming pwedeng cost nito... I'm having the same problem recently, and after a lot of elimnations, we are down to 3 culprits...

1. Busted valves
2. valve guides needs replacements
3. Piston ring needs to be replaced...

I've changed my valve seals (valve stems) twice for this month... and it aint cheap.. btw, AFAIK the number of valve seals depends on the number of your valves, if it is 12, then 12 and 16 if 16...

Oily sparks leads to higher fuel consumption, bad smoke emission, loose compresion, and also if neglected, lost of oil... and you know what happens when u loose oil...

anyway, if ur having it check and replaced.. look for a reputable mechanic/shop for that... remember, ur having ur car's heart is treatedn here... :lol:

HTH

[FerioEG9Boi]

damn. buti nalng i saw these. i have the same prob too.

[cesar]

Sabi sa kabila, baka daw plug seal lang daw ang prob. kasi hindi naman yung tip ang may langis kundi yung body nya (threads). Okey naman ang hatak ng Revo ko yun lang pag nilinis ko na ang spark plug may langis yung threads niya. Madali lang daw itong palitan, just open the valve cover and replace the old plug seals with new ones and medyo mura pa ang cost nito.

[verto]

Ah ok... :lol:

I think when removing the seals yuo have to remove the cam shaft that covers the valves (etc)... but I'm not familiar with Revo engines...

I hope you could solve ur problems na... mine hindi pa kasi...

though I hope urs is different from mine, nagsimula kasi yung akin sa thread and washer lang.. now it parang lumalala and it seems that the threads are not that really oily, but more of carbon build up...

[cesar]

Dude, I just checked my Revo to my mechanic and sabi nila normal lang daw na may oil sa threads wag lang sa tip ng spark plug kasi papalya at may hesitation pag tumakbo na. Is this true? Anyway, ok naman ang takbo niya is just that may langis nga ang threads. Saan kaya pwedeng pasungkit na lang ang seals nito without it being top-overhauled?

[wildthing]

If you can do a compression test, you can verify if the compression is still within specs. A slight loose compression is not physically observable (like hatak ng takbo). Or if one or 2 valves lang ang may slight problem ganun din - hindi obvious. A compression test will show numerical figures sa tester and each engine will have its own specs of compression range.

My nissan sunny pick-up had this (inistock ko for 1.5 years kasi ng hindi inistart) so ayun the valve seat ng mga bukas ng valve corroded and thus the loose compression. One symptom I observed was hindi ko sya matiming ng ayos and the engine will die on low rpm (dapat mataas). I guess my case was extreme than yours kaya obvious and loose compression without the tester. There might me a need for some machine shop works. Total damage cost was P2950 sa akin....top overhaul job was P1200, gasket was P450, machine shop works was P880, the balance were spent for the valve seats and the gasket sealer etc.

Goodluck.

[afrasay]

Check your spark plug gasket first or tighten it before going into the complicated and "expensive" part. :wink:

[cesar]

Actually, I have it checked yesterday mainly to check the plug seal but it was still ok and without signs of leak. What I notice is that when you switch on the engine and try to open the oil lid, and place your hand on top of the open lid, you will feel air pressure coming out and makes a sound. I don't know how to test a simple compression test for engine. Do you know where to bring my Revo for this type of test? Sa Servitek kaya kaya nila? How much kaya?

[afrasay]

May "kaunting" air pressure ka talagang ma feel sa oil lid. what is really bad is kung may oil na bumubuga doon and also sa dipstick. kung wala you're still ok. '98 revo is relatively new. wala pa siguro 100,000 km ang tinakbo niya. diba hydrolic valve lifter as in self adjusting yan?

[cesar]

Yup! and that makes it very complex. So do you suggest to have it top-overhauled or just let it go na lang? One more thing is that I put an oil that has 10W30 grade, its the Citgo brand na nabibili sa Price Smart. I notice kasi na bumilis nga ako kaso nga parang lampas sa na sa "F" mark ng dipstick ang oil. Di kaya makaapekto yun sa pagbasa ng mga threads ng spark plug :?: Pls. advice..

[afrasay]

do not over fill your engine wid motor oil. sa seals ng drive train magkakaproblema.
if sa thread lang ok lang wag lang sa tips.

[sonny]

did you notice any reduction on your oil level lately? if so, you may really have to make a top overhaul, mahirap yung sungkit lang, baka you need to change the piston rings already narin, baka worn out na rings mo kaya umaakyat na oil sa combustion chamber pagikot ng makina. also, if you notice excessive white smoke coming out of your tail pipe hanbang takbo makina mo, am sorry to say but you really need to open up your motor.

i had same problem a month ago, naayos ko na. replace ako valve seals and rings. ok n sya ngayun. i spend around 6,500.00.

if non of the oil reduction and smoke ever exists in your motor, you may just have to change your plugs, baka mahina n sya sumunog. oil do reach the combustion chamber but in little amounts only, thats lubrication, yun ang trabaho ng oil ring, but in excess, problema na.

hope nakatulong kami syo bro.

[sonny]

suggestion lng bro, i think it better to use locally manufactured motor oil, kasi tested yan based on philippine condition, imported oils may be saying their better, but they were manufactured nad tested based on the conditions in the country origin, baka instead makatulong sa engine natin baka lalo pa mapasama.

[theveed]

kung plug seal nga mas madali pag gawin, took me mga 1hr DIY dati sa Corolla ko...

pero your best bet is to do a full compression test para wala nang hula-hula

[leinahtan]

A noticeably oil consumption may be the first sign. In which case your engine requires top overhaul. Meaning, your engine valve seals has reached it's peak role and needs replacement.