Magaling na Mekaniko for Top Overhaul

[_Cathy_]

160,000 pero never tumaas ang temp at never naubusan ng oil. First time rin siya nagbawas ng oil, umabot ng low pero nadagdagan ko kaagad ng oil.

I called an autoshop in the Manila area (near Makati lang) na maganda ang feedback sa net, very accommodating naman yung nakausap ko, sabi mas maganda kung pati piston rings isabay na, ang intindi ko gusto ata nila palitan na yung mga parts na wo worn out talaga sa katagalan so sorta like a major overhaul na rin (?) I'm having my car checked on the week-end para ma diagnose nila ng maayos.

You suggested pala a compression test, I'll have it done on the week-end. Pano pag lumabas na valve seal lang ang problema? Yun lang ang papalitan ko or pasabay ko na yung piston para mapangunahan ko na yung sira?

[reym]

160,000 pero never tumaas ang temp at never naubusan ng oil. First time rin siya nagbawas ng oil, umabot ng low pero nadagdagan ko kaagad ng oil.

I called an autoshop in the Manila area (near Makati lang) na maganda ang feedback sa net, very accommodating naman yung nakausap ko, sabi mas maganda kung pati piston rings isabay na, ang intindi ko gusto ata nila palitan na yung mga parts na wo worn out talaga sa katagalan so sorta like a major overhaul na rin (?) I'm having my car checked on the week-end para ma diagnose nila ng maayos.

You suggested pala a compression test, I'll have it done on the week-end. Pano pag lumabas na valve seal lang ang problema? Yun lang ang papalitan ko or pasabay ko na yung piston para mapangunahan ko na yung sira?

Mas maganda magkaroon sila ng slight diagnostics like compression test wet and dry, cylinder balance testing, leakdown testing (kung meron) para more or less malaman kung alin ang culprit. Kasi kung valve seal lang yan, pede yan dukutin ng di tinatangal ang makina.

Kapag binuksan ang makina at naibaba na ang cylinder head, tingnan mo ang cylinder pat may guhit ng langis ibig sabihin sa ring ang problema, pag may makintab na puti sa cylinder nabalian ka ng ring.

[_Cathy_]

Thanks. I'll ask them to do the tests that you said. Paano kung lumabas sa mga tests na valve seal lang ang problem, wag ko ng pagalaw ang piston? Kasi suggestion ng shop isabay na ang piston. I'm so confused kasi sabi rin ng iba, kung kaya naman sa budget isama na rin yung piston.

I won't have the chance to see the cylinder kasi iiwan ko yung car. Estimate nila mga 5-7 days bago ko makuha ulit.

[_Cathy_]

Ganito po kasi yan. Yun top overhaul pinapalitan yun valve seals, springs gasket and ni-reseat yun valve. minsan valve seal lang problema pero since tangal na yun top from the block (lower part of the engine)pinapalitan na ito madalas. kung di naman napabayaan un engine, hindi nag overheat, hindi naubusan ng langis ok pa yan at tatagal pa yan, I have a 13 and 15 yr old vehicles pero never pa nag overhaul, top or full.

Thanks. It was a good and clear explanation. Yung pag reset ng valve kailangan ba ng mga computers o tantsahan lang? Marami na rin kc akong na encounter na mekaniko na oo lang ng oo na kaya nila. One time pinalitan yung water pump ko, nakalimutan ikabit yung pulley. hehe. What about kapag Total overhaul? Ano na ang gagalawin?

Sorry if I ask too many questions. I try to get as much working knowledge as possible so I could make an informed decision. I really appreciate all the input.

Di ko rin maimagine kung pano yung dukot. Ang nakikita ko lang kasi sa engine yung pag tinatanggal yung valve cover. hehe.

[4JGtootsie]

Hirap kasi, gusto nila palitan lahat maski maaring maayos pa ang bearings at bushings. Be sure marami kang saved money. Once you bring down the whole engine obligado ka na maglabas ng pera or else ma tetenga yan. Rough estimates are decieving once engine is down it becomes deadly. I strongly suggest a top overhaul/check first.

[_Cathy_]

Oh no. Thanks for warning me. I'll ask for a detailed estimate. Yung top overhaul (kit and piston) estimate 20k daw. 25k tops.

Ano pala indications ng blow by na makina??? Pano i check yun?

[KBR]

Oh no. Thanks for warning me. I'll ask for a detailed estimate. Yung top overhaul (kit and piston) estimate 20k daw. 25k tops.

Ano pala indications ng blow by na makina??? Pano i check yun?

well, pag may "Blow By" na ang makina, usually ang unang signs nito ay ma usok ang exhaust (continous Bluish / White smoke sa tambutso), basa sa Oil ang Spark Plugs at mahina ang engine compression. also, mag mi-misfire din ang makina pag may "blow by" na siya.

anywayz, kung ako sa iyo, I would have the mechanic do a Leak Down & Compression test. then kung OK pa naman ang compression (it should be around 130-140 psi OR 140-150 psi, at hindi dapat bumaba ng 120 psi *and there should be a minimum difference of 10 psi per each cylinder) pwede pa na ipa "Top Overhaul" lang ang makina.

and BTW, mabuti din kung ipa test mo din ang Oil pressure (check the repair manual for the specific oil pressure * idle) para ma make sure na hindi rin masama ang Oil Pump.


aite, peace.

[reym]

Oh no. Thanks for warning me. I'll ask for a detailed estimate. Yung top overhaul (kit and piston) estimate 20k daw. 25k tops.

Ano pala indications ng blow by na makina??? Pano i check yun?

Grabeh 20K for top overhaul??? Kasama na ba palit ng piston rings nyan?

call gant para sa price ng spare parts
8316932,8318938

Pag top overhaul ang mga pyesa papalitan:
1. Valve seals
2. Valve guides
3. Valves
4. valve seats (ring)
5. Piston Ring
6. Overhauling Gasket
7. Machine of Head for fitting of valve seats and valves
8. Valve Springs (if worn - kailangan check ang tension nito against engine
specs)
9. Oil filter
10. Oil

Pag total overhaul 1-10 +:

8. Piston
9. Machine: re-bore / sleve
10. Thrust bearing, journal bearings, main bearings.
11. Machine: crankshaft polishing \ re-grinding
12. Oil pump


Kung nasa 20K ang top overhaul, pa full overhaul mo na kc sayang ang bukas.

[puroy]

+1 mahal yan for a top overhaul. alam ko nasa 10-15k lang dapat...

[eyshmechanic]

i think para mas reliable bring it to toyota service center then pacheck mo lang kung ano ang problem then get their estimates. then post their findings here so we can give you more indept suggestions.