Diesel Fuel Injection System Help Desk

**Dieseldude** · January 18th, 2012 02:58 PM

*Boss Dieseldude

Need your expert advice po. I recently bought a Foton Blizzard pick-up with 2.8L NA 4JB1 engine.
My experience as of the moment is steering wheel, pedals & shift knob vibrations during idle. My first diagnosis is cheap engine mounts and transmission mounts. Worry ko lang po kung masosolve nito ung vibrations na na-e-experience ko ngaun kung papalitan ko ung mga mounts. I don't know if vibration will be corrected by replacing engine mounts. I've never worked on a Foton. Btw, check the exhaust pipe if it has rubber isolator hangers.

My next concern is the loud engine noise na pasok sa loob ng cabin and parang nagp-produce pa siya ng low frequency noise na in long drives eh irritating na masyado. Any advice po to reduce the engine noise? Was planning to install sound deadeners sa hood and sa loob ng cabin to reduce noises. Install padding on the engine firewall if none. Retard engine timing by 1 or 2 degrees. It might reduce combustion noise.

Any advice po regarding my concerns will be greatly appreciated po.

thanks in advance

**kramterrag** · January 18th, 2012 05:30 PM

Originally Posted by Dieseldude

*Boss Dieseldude

Need your expert advice po. I recently bought a Foton Blizzard pick-up with 2.8L NA 4JB1 engine.
My experience as of the moment is steering wheel, pedals & shift knob vibrations during idle. My first diagnosis is cheap engine mounts and transmission mounts. Worry ko lang po kung masosolve nito ung vibrations na na-e-experience ko ngaun kung papalitan ko ung mga mounts. I don't know if vibration will be corrected by replacing engine mounts. I've never worked on a Foton. Btw, check the exhaust pipe if it has rubber isolator hangers.

My next concern is the loud engine noise na pasok sa loob ng cabin and parang nagp-produce pa siya ng low frequency noise na in long drives eh irritating na masyado. Any advice po to reduce the engine noise? Was planning to install sound deadeners sa hood and sa loob ng cabin to reduce noises. Install padding on the engine firewall if none. Retard engine timing by 1 or 2 degrees. It might reduce combustion noise.

Any advice po regarding my concerns will be greatly appreciated po.

thanks in advance

will check those boss. pwede ko po ba pacheck sa shop niyo ung unit ko? pa PM na lang po sir ng location and schedule ng operation ng shop niyo. thanks!

**mumuy** · January 19th, 2012 05:54 PM

Sir Dieseldude,

I came across a thread about adding 2t oil on diesel fuel and an amazing positive outcome from users particularly old model diesel vehicles. Even CRDI owners uses this motorcycle oil on their fuel system.
Being a diesel expert, can we have your thoughts on this matter? Will there be long term negative effect on the engine or injectors?
TIA

**Dieseldude** · January 20th, 2012 11:36 PM

Originally Posted by mumuy

Sir Dieseldude,

I came across a thread about adding 2t oil on diesel fuel and an amazing positive outcome from users particularly old model diesel vehicles. Even CRDI owners uses this motorcycle oil on their fuel system.
Being a diesel expert, can we have your thoughts on this matter? Will there be long term negative effect on the engine or injectors?
TIA

I've heard about this but never tried it yet. A lot of people say it's good. That's as far as I know.

**alwayz_yummy** · January 24th, 2012 08:19 AM

sir dieseldude, question lang...

my ride is 3.5-mo, 3500kms-old kia carens 2.0 crdi vgt.

pagi1st start sa morning, typical diesel engine ang tunong--dinig mo rattling.. pero as it goes to its operating temp., about almost 1/2- of the guage.. unti unti din tumatahimik.

gusto ko lang i-clarify ung sabi ng casa sa akin: gun daw talaga diesel engine, kasi daw nagsisimula palang magcirculagte ang oil. tama po ba un?

or antay ko ang magiging resulta ng 1st pms nito next month (4 mo or 5000kms)

**miked** · January 24th, 2012 11:05 AM

sir dieseldude,

what's the function of this plug located at the rear of the injection pump? this is where the fuel leaks. mechanic installed another used one (with copper gasket & teflon). still leaks but to a lesser extent.

plug location at the rear

here's the injection pump by the way.

TIA

**miked** · January 24th, 2012 11:07 AM

sorry for the fuzzy pics.

**Dieseldude** · January 24th, 2012 12:44 PM

Originally Posted by alwayz_yummy

sir dieseldude, question lang...

my ride is 3.5-mo, 3500kms-old kia carens 2.0 crdi vgt.

pagi1st start sa morning, typical diesel engine ang tunong--dinig mo rattling.. pero as it goes to its operating temp., about almost 1/2- of the guage.. unti unti din tumatahimik.

gusto ko lang i-clarify ung sabi ng casa sa akin: gun daw talaga diesel engine, kasi daw nagsisimula palang magcirculagte ang oil. tama po ba un?

or antay ko ang magiging resulta ng 1st pms nito next month (4 mo or 5000kms)

Hindi pa ako nakakita ng Carens mag cold start. Pero sa palagay ko, normal ang konting ingay dahil naka advance timing and naka fast idle mode ang engine pag malamig. Hindi ito dahil sa insufficient oil circulation pag malamig.

**Dieseldude** · January 24th, 2012 02:28 PM

Originally Posted by miked

sir dieseldude,

what's the function of this plug located at the rear of the injection pump? this is where the fuel leaks. mechanic installed another used one (with copper gasket & teflon). still leaks but to a lesser extent.

TIA

This is a breather. Something is wrong inside the pump if this leaks.

**alwayz_yummy** · January 24th, 2012 09:06 PM

Originally Posted by Dieseldude

Hindi pa ako nakakita ng Carens mag cold start. Pero sa palagay ko, normal ang konting ingay dahil naka advance timing and naka fast idle mode ang engine pag malamig. Hindi ito dahil sa insufficient oil circulation pag malamig.

siguro it has something to do na din sa settings ng engine management (ecu).. electronic ang throttle control. will clarify sa casa next month