Nissan Sentra '90 model (carb) - Sumisinok

[mikejohnny]

just had this problem today. car is sentra boxtype 90model, 12 valve carb

at 2nd, 3rd and 4th gear parang sinisinok at nalulunod yung makina, halos gusto mamamatay nung makina. Kanina nung pina-park ko (reverse gear) halos namatay na pero binomba-bomba ko lang yung gas biglang hindi na namatay pero andun pa rin yung parang sinisinok.

pero kapag naka idle naman ok naman sya, kahit bombahin mo hindi sinisinok or nalulunod, pag umaandar lang.

prior to that, kaninang madaling araw petron lang ang bukas na gasolinahan nakita ko, pero eversince sa caltex gold ako nagpapa-gas, 1st time ko lang gumamit ng xcs.

after 8kms of driving we stop and napansin na ng kasama ko na parang mausok yung tambutso and medyo mabaho.

then after 3hours na naka tambay kami we drove ulit and while driving around 3kms pa lang mula sa pinangalingan namin medyo naramdaman ko biglang suminok im running at 60kph then at 4th gear pero minsan lang yun, so we stop again sa church after 9kms of running.

after 1 hour, paalis kami ulit, naka idle ako for 10mins antay ko kasama ko and no sign na sinisinok, then nakaka 100meters pa lang ako ng andar biglang suminok at namatay pero pagka click ko umandar naman agad pero dun na nagsimulang magsinok sinok hangang makarating kami sa next na pupuntahan namin around 8kms ulit yun.

then nung pauwi, it's around 30kms ride at high speed, hindi naman sumisinok, until nasa last 2kms na lang nung medyo stop and go traffic area na kami dun ulit nagsisinok at nalulunod na halos mamatay na talaga, pina-abot ko na lang talaga sa bahay na panay 1st gear lang.

pagdating sa bahay, nag idle ako for 3mins ok naman, nag rev ako ok din naman hindi sumisinok. pinatay ko then switch ko ulit one click naman and hindi sumisinok.

history:
last december, napalitan na itong ng carburetor, not surplus yung galing din mismo sa mga lumang sentra na kinahoy na. eversince that december hangang kanina lang saka nagloko na parang sinisinok.

pero bago ko pinaayos nung december ang laging problem is parang palyado, yung usok naamoy sa loob kotse then erratic idling, kahit idle ka pag tinapakan mo gas sumisinok, kaya sabi nung mechanic sa carburetor, so that's it pinalitan nga namin and everything went smooth, until kanina lang.

ang napalitan pa lang, fuel filter nung december din.

change oil last saturday only.


what could be the cause kaya?

[ghosthunter]

Your car might have problems running with E10 gasoline.

You also might need to either adjust the carb or replace the carb jets.

[mikejohnny]

Your car might have problems running with E10 gasoline.

You also might need to either adjust the carb or replace the carb jets.

oh i see, hindi ko alam na meron palang ethanol ang xcs ng petron.

yun lang kaya, wala kayan ibang nadamay na papalitan?

[isa1023]

I was having a similar problem with my Mazda carb.

Since ngayon lang nagloko, malamang may nabago sa air-fuel metering ng carb mo just recently.

Based on experience on DIY-ing carb tweaking on the Mazda, one of the vacuum hoses sucking in air could have been disconnected. Assuming you didn't tweak any screws.

Those rubber hoses are the ones most prone to disconnection or slipping out from the vacuum tubes.

Let's face it. Our carb becomes more problematic to maintain because of E10. Luckily there's a nearby Jetti in my place selling cheaper and pure gas (that's what the pump say).

Anyway, I'm looking forward to converting to LPG early next year.

[mikejohnny]

kelangan bang pa drain ko yung fule tank para lumabas yung galing sa petron?

the problem is, baka kasi sa talyer na pagdalhan ko is hindi nila alam na e10 nga naging problem ng car ko since most of them naman is hindi aware sa ganitong mga online forum kaya baka kung ano lang kalikutin nila mapamahal pa gastos ko.

any specific solution na dapat kong sabihin na gagawin nila?

[Sarsi]

your suking caltex gold also contains 10% of ethanol, same as petron xcs.

it could be more than your fuel.

[CivicVTi]

*mikejohnny

You mentioned that you changed oil very recently prior to experiencing the problem. What specific oil did you use? Did you perform a tune-up (change spark plugs/air filter, etc) at the same time? If so, what specifically did the mechanic do?

Regarding the gas that is already in the tank, just use it up until the fuel gauge is almost empty. Then refill with Petron Blaze or any fuel that has no ethanol content. Then observe for a while.

[mikejohnny]

update:

problem solve by changing the coil. super luma na pala kasi yung andun.

the mechanic checked everything, ok yung carburetor, yung spark plug number 4 medyo basa kaya nilinis, pinalitan na rin fuel filter kasi yun unang suspect ko pero yung tinangal na yung dati wala namang gaano dumi. then nung re-start yung car nag start konti sabay namatay ulit, kaya tinignan yung coil then pagka start di na halos nagbibigay kuryente.

so bumili kami coil 550, fuel filter 50 plus 300 labor kasi pinuntahan na dito sa bahay mung mechanic.

we road test it and everything went ok na ulit.

thanks