parang tunog taxi ang makina, may kumakatok pag umaarangkada..

[cocoy_01]

my ride is a lancer 93 EL

what causes this sound?
what triggered this to happen?

[Bogeyman]

Lagyan natin ng metro sa loob, ok na yan. (joke)

Seriously, it could be a number of things. Engine oil, fuel filter, calibration, etc. Care to give us a few more details, like:

- Kelan mo huling pina-service yang sasakyan mo?

- Ginamit mo ba sa mahabang biyahe lately?

- Lumusong ka ba sa baha?

- Malayo ba ang daily drive mo?

- Pinang-tow mo ba ng ibang sasakyan ang kotse mo?

- Nilagyan mo ba ng Khaos Super Turbo Charger ang makina mo?

[afrasay]

baka tomo-tope. pa check mo valve clearance and adjust if necessary

[cocoy_01]

i have no idea sa history ng car.. bought this second hand eh.. 3 weeks na sa akin..

wala naman dati tunog na ganito, pero bihirang bihira ko lang naman marinig...

sa first two gears ko naririnig pag mag-aaccelerate. i assume, familiar kayo sa "tunog taxi na engine na parang may kumakatok na sound"

weekdays lang ginagamit yung auto, pang pasok lang.. valenzuela-manila-valenzuela.. napa-tune up ko na ito, nung linggo sa isang carb-engine mechanic.. awa ng Diyos nawala (ata) yung katok.. will be posting kung meron pa rin..

pero i still wanna know what causes it?

pinaservice saan po? sa mitsubishi mismo?

[vinj]

Mos likely "tope" yan.

If you havent done so, get a change oil and tune-up (change spark plugs and check timing). Where do you fuel up as well?

[nicolodeon]

Tama si afrasay. Pa-check mo you valve clearances mo. Baka yun yung kumakalatik kapag umaarankada ka.

[natasatanas]

detonation (tope) yan sir. yung sa tita ko (same model) ganun din problem dati; pina-adjust nya timing, ginalaw/ rotate distributor lang using a timing gun. tama si sir vinj.
pag di umubra, pa-adjust mo na valve clearance mo. pwede rin yan cause nyan sa gas na karga mo or lalo na sa gas station mismo; baka may halo tubig

[ILuvDetailing]

Check your exhaust, puti ba lumalabas na usok? Check mo din yung Air-Fuel mixture baka masyadong lean.

[the_wildthing]

Anong gas ang gamit mo? Try mo magpalit ng ibang gas...

[cocoy_01]

unleaded po ang gas na gamit ko.. is there any difference ng paggamit ng ibang gasolina?

magkano kaya estimate ng ayos ng "tope" na yan?

range ng price ng:

Check/adjust valve timing?
check/adjust air fuel mixture?
check/adjust valve clearances?

any parts na maaaring palitan?

newly replaced oil and spark plugs na nga pala siya..

[ILuvDetailing]

Try using a higher octane fuel... see if it eliminates the engine knock or tope. Usually older cars require higher RONs.

[the_wildthing]

Try mo muna ibang brand ng unleaded, or sa ibang gas station... baka lang naman. Kasi naalala ko yung Revo nung boss ko may tope nag try syang mag-Caltex Gold (instead of Silver) nawala.

[cocoy_01]

yung air-fuel mixture po ba sa carb ang adjustments noon?
if yes, natune-up na po ang aking carb last sunday.

[falken]

Try mong magpakarga ng same fuel sa ibang gas stations (preferably newly opened ones and not located in flood prone areas), kung di umubra, try higher octane gas. Also, nung nagtune up ka, nagcheck ba ng valve clearance?

[cocoy_01]

di po ako sigurado kung na-check yung valve clearance eh..ermat ko nagdala ng auto sa mechanic.. pano po ba ginagawa yun? is it as simple as checking/turning some screws o kailangan buksan makina to check/adjust valve clearance?

[nicolodeon]

Kung malapit ka ng magpa-tuneup ng kotse mo, ipasabay mo na yung valve timing, clearances at air fuel mix.

[vinj]

The EL should be able to take regular 93 octane AFAIK. As the others mentioned, try gassing up at good station (Caltex, Petron, Shell)...

Mura lang magpa-check ng IGNITION timing. Just look for a service station/mechanic with a timing light and make sure he knows what the stock setting of the Lancer is. If it still persists, then you try upping to 95 octane fuel.

TO check valve clearances, they open up the engine but this shouldnt result in detonation/tope really. Valve clearances that are off-spec usually results in more enging clatter, not "tope".

[cocoy_01]

thanks! the tope is gone, hopefully.. feel ko, wrong shifting lang ang problema.. medyo kinakapa pa kasi ang tunog ng makina..napapaaga ata ang pag-segunda ko.. post na lang kung ano pa mangyayari..

more power to tsikot.com!