Diesel Fuel Injection System Help Desk

[Dieseldude]

Hello Dieseldude,

Just wanted to ask how do I fix my problem for my trooper, my a/t cant seem to shift to overdrive when I drive at around 70kph and stays at high rpms. I had the atf changed and the filter cleaned, but still no improvement. They say that if might be due to the injection pump, but the my exhaust seems ok, di mausok.

Baka sira yung overdrive switch or wiring sa overdrive circuit.

Kung minsan, nagloloko and throttle position potentiometer ng injection pump. Pwede ito panggalingan ng poor transmission shifting.

[rugarai08]

good evening sir dieseldude

4JA1 po ang makina ko, katatapos ko lang mag pa overhaul last tuesday,
ang problema po ndi pa rin naalis ung mapilig ung makina (malakas ung vibrate) lalo na pag medyo maiinit na ung makina ko at pag kabukas ung aircon.

may problema po kaya yung injection pump ko?
nagpacalibrate na po ako last september, pero ganun pa din.

ano po kaya problema?

thanks.

[miked]

i think inherent na sa 4ja1 ung malakas ang vibrations as per my experience with 4ja1 for 3 years. during cold starts, A/C on. pero hindi naman masyado vibrating at high speeds na. from my point of view, dahil siguro sa timing gear sya e nagkakaroon ng torque reversal from the constant meshing of gears. just my opinion.
pero among the diesels i have driven, saludo pa rin ako sa 4ja1. matibay, matipid kahit mahina sa acceleration. namaneho ko na rin kahit nabali na pala yung isang valve at ayaw nang lumampas ng 30 km/h.

[amateur1]

I would like to help! Throw in your questions regarding problems with your fuel systems (injection pumps/ injectors/ turbochargers/ electronic systems/ etc.....) Then you guys take it from there...................if I can be of help, why not!

Sir, my mechanic advised me that my pajero needs "purging" in order to clean its diesel injectors and improve acceleration. Can you refer me any shop here in Metro Manila that conducts "purging" to diesel engines? Thanks in advance.

[Dieseldude]

good evening sir dieseldude

4JA1 po ang makina ko, katatapos ko lang mag pa overhaul last tuesday,
ang problema po ndi pa rin naalis ung mapilig ung makina (malakas ung vibrate) lalo na pag medyo maiinit na ung makina ko at pag kabukas ung aircon.

may problema po kaya yung injection pump ko?
nagpacalibrate na po ako last september, pero ganun pa din.

ano po kaya problema?

thanks.

Injection pump problem ito malamang.

[Dieseldude]

Sir, my mechanic advised me that my pajero needs "purging" in order to clean its diesel injectors and improve acceleration. Can you refer me any shop here in Metro Manila that conducts "purging" to diesel engines? Thanks in advance.

Your mechanic may have an idea on who can do "purging" for your Pajero. Is this a cleaning procedure using chemicals?

From experience, automization and spray quality of injectors gradually deteriorate over time due to erosion of spray holes. This is normal wear and tear. Worn out nozzles cannot be cleaned; they just have to be replaced.

[rugarai08]

Injection pump problem ito malamang.

ipa2 check ko na lang po ulit ung injection pump ko.

thanks dieseldude.

[jepoy_187]

thanks po sir mike and sir dieseldude..this helps me alot..ty and godbless..^^

[gcl_2000]

Hi Sir Dieseldude,

May I know kung saan po pwede makabili ng combination boost and pressure gauge para sa turbo? what brand will you recommend po sana? Thanks in advance. My engine is 4d56 turbo , My vehicle is a Mits Spacegear.

[jsaure72]

Baka sira yung overdrive switch or wiring sa overdrive circuit.

Kung minsan, nagloloko and throttle position potentiometer ng injection pump. Pwede ito panggalingan ng poor transmission shifting.

Ok naman yung switch, could having my injection pump checked help solve this?