4ja1 low idle on coldstart

[aioshin]

After replacing fuel clamps on the fuel hoses it did improve. idle goes down but

engine did not shut down. I think I have to replace the fuel hoses. its a 17 year old vehicle and oem clamps have no screws but clips might have lost its

'grip' .

Meron na bang leak ang fuel hose due to old fuel clamps?


My ride is a highlander, so 4ja1 din. A year ago, i have this engine issue na bigla na lang namamatay while running, kahit naka 4th gear. Biglang mag zero rpm, kakatakot nga, buti na lang nasanay ako, almost a year ko yun dinadala, hangang mag decide ako mag pa check ng Injection pump, overhaul ng injection pump pinagawa ko dun sa trusted shop. Yun pala, pumasok na ang oil dun sa shafting nung Pump connected sa engine, kaya namamatay bigla, after that and until now, so far di ko na na experience yun. 10K gastos ko replace nung shaft and other o-rings and ano ano pang rubbers.

[anthon05]

wala naming leak, wala rin akong naaamoy na fuel. napansin ko lang

maluwag yung hoses, madaling tanggalin at madaling ikutin even with clamps.


my next move it to replace the fuel hoses. yung dinala ko sa calibration ang sabi niya possible may oil sa pump. hindi ko lang ma understand saan galling oil, maybe from adding 2t everytime I fill up. hindi lang ako convince kasi maganda ang hatak and hindi naman mausok.


earlier on coldstart ni ramp ko sa incline (paakyat) bumaba rpm. pero kung pababa naman normal siya or flat road.

[jaypee10]

ganyan problema ng kumpare ko sa XLT pamasada niya nag lolow power.ganyan ung dinadaing niya wala kayong pagkakaiba ng problema.diko lang alam kung pano na solve.ngayon matino na makina niya..

[Yatta]

wala naming leak, wala rin akong naaamoy na fuel. napansin ko lang

maluwag yung hoses, madaling tanggalin at madaling ikutin even with clamps.


my next move it to replace the fuel hoses. yung dinala ko sa calibration ang sabi niya possible may oil sa pump. hindi ko lang ma understand saan galling oil, maybe from adding 2t everytime I fill up. hindi lang ako convince kasi maganda ang hatak and hindi naman mausok.


earlier on coldstart ni ramp ko sa incline (paakyat) bumaba rpm. pero kung pababa naman normal siya or flat road.

Kung humihina paakyat, suspect ang fuel pump.

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[anthon05]

kung I rev ko wala namang problem malakas ang hatak. yun lang pag steady

or park mo sa paakyat sa umaga bumababa rpm hanggang sa mamatay makina.


pero kung mainit na makina kahit naka steady sa paakyat hindi na mamatay makina

[Yatta]

kung I rev ko wala namang problem malakas ang hatak. yun lang pag steady

or park mo sa paakyat sa umaga bumababa rpm hanggang sa mamatay makina.


pero kung mainit na makina kahit naka steady sa paakyat hindi na mamatay makina

Ganyan na ganyan ang problema nung Hilander namin. I'm telling you get that injector pump fixed.

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[anthon05]

Yan din advice ng calibration shop.


thank you

[StockEngine]

Ganyan na ganyan ang problema nung Hilander namin. I'm telling you get that injector pump fixed.

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how was the injector pump fixed?

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[Yatta]

how was the injector pump fixed?

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Overhauled it. Replaced the seals, broken spring, cleaned the pistons/plunger...