Stumbles on acceleration, now loss of power

**harimon21** · November 4th, 2008 09:53 AM

Tsikoteers help naman.
Last sunday while driving sa highway, biglang-bigla on accelerating and pedalling on the gas parang nag-stumble yung engine (kumakadyot). Tapos bumababa yung rpm kahit nasa 4th or 5th gear, and nabawasan yun power. Parang walang acceleration pagtapak ng gas. Intermittently, pakadyot kadyot ONLY when stepping on the gas to accelerate to overtake o pagakyat.
Today, normal starting naman, wala redondo on starting up di na nagstumble pero yung loss of power pagtapak sa gas very noticeable, parang i am stepping on a sponge.
Can this be spark plug prob? (last replacement is 2 years ago) or fuel pump or fuek filter?
Any ideas?
Singkit 4g15 EFI po and car

**ghosthunter** · November 4th, 2008 09:56 AM

It might be the fuel filter or even the fuel itself.

When was the last time you had the fuel filter replaced?

Was the gasoline purchased from the station you normally visit?

**1D4LV** · November 4th, 2008 11:16 AM

imho, check the electricals. my assumption is a busted HT wire.

**v6dreamer** · November 5th, 2008 03:30 AM

Originally Posted by ghosthunter

It might be the fuel filter or even the fuel itself.

When was the last time you had the fuel filter replaced?

Was the gasoline purchased from the station you normally visit?

Agree: Maybe your fuel filter is the culprit.

**harimon21** · November 5th, 2008 06:50 AM

salamat sa replies ghosthunter, 1D4LV, v6dreamer...
Fuel filter was replaced less than a year ago.
I have suspicion now na baka fuel nga as ghosthunter said. I normally go for Petron unleaded. Night before, nagpakarga ko sa Total station dito and went for premium (Protec) since first time nga and I dont trust their unleaded because of some rumors na may halo daw.
Talaga kayang mas banayad ang response kung higher fuel octane rating ang gamit o something is rally fishy with the fuel?
Thanks!!

**cablespy** · November 5th, 2008 07:11 AM

Also have your Fuel pump and computer box checked if your car has one.

**ghosthunter** · November 5th, 2008 09:13 AM

Originally Posted by harimon21

salamat sa replies ghosthunter, 1D4LV, v6dreamer...
Fuel filter was replaced less than a year ago.
I have suspicion now na baka fuel nga as ghosthunter said. I normally go for Petron unleaded. Night before, nagpakarga ko sa Total station dito and went for premium (Protec) since first time nga and I dont trust their unleaded because of some rumors na may halo daw.
Talaga kayang mas banayad ang response kung higher fuel octane rating ang gamit o something is rally fishy with the fuel?
Thanks!!

For now try to focus on the gasoline. Is your car's fuel tank currently full? Its because you might need to drain your fuel tank and pump some gasoline at a more "trusted" gasoline station to solve the problem.