Problem accelerating beyond 100kph

[b0y37]

Hi guys,

I just want to ask your opinion regarding my Advie.

2006 Adventure diesel, 88k on the odo, due for PMS and change Timing Belt (PMS was last done 5k kms ago), fuel filter last replaced 10k kms ago, air filter last replaced 5k kms ago.

Engine speed seems to be rev-limited to 3k rpm. I can make it run up to 100kph (3k rpm) with no problems. But beyond that, further depressing on the accelerator pedal (as in pedal to the metal) only result to black, black smoke, as if the additional diesel is burnt and then sent to the exhaust directly, no increase in speed.

Can this be a symptom of the timing belt needed to be replaced? As if the timing belt is slipping at high rpm. I know that my unit is due for oil change, but Im somehow doubtful that this is the sole problem.

By the way, I used to mix 2T on my diesel. Do you think it messed up my injectors?

[jrn29]

try to check the injection pump sir, , ganyan din naging sakit ng adventure ko, kahit pedal to metal na stock lang sa 3k rpm *100 kph . madumi lang pala ang injection pump ,;)

[Retz]

nung nag drive ako adventure before, nasa 5th gear na 80kph, mdyo hirap na makina if you go 100 up na.

[b0y37]

Na-max ko kasi dati yung advie ko ng 130kph, around 4200 rpm. So may baseline ako kung may problema yung makina. In the situation I described above, ayaw talaga umangat ng RPM.

[LN106G]

Use quality air filter. Use OEM. I haven't seen quality replacement air filter for the mitsu advie or the L300. Chances are you're air filter is super dirty or you are using cheap replacement air filter

[jrn29]

Na-max ko kasi dati yung advie ko ng 130kph, around 4200 rpm. So may baseline ako kung may problema yung makina. In the situation I described above, ayaw talaga umangat ng RPM.

wala sa makina yan sir, nasa air filter nga yan, or sa injection pump , ganyan talaga kadalasan nagiging problem sa mga 4d56 ;)

or try to tune up sir :sweat:

[K.I.L.L.]

Diesel engines need to be cleaned and calibrated every so often. Yours might be blocked. Take it to a competent diesel specialist such as Berrima, Malabon diesel or Central diesel for them to have a look.

[b0y37]

An update:
I had my oil changed and my air filter cleaned, still the problem persists. Sinubukan ko harurot kagabi, after 2000 rpm, mabagal na ang acceleration nya.
I guess next in line would be to change the timing belt.

[1D4LV]

An update:
I had my oil changed and my air filter cleaned, still the problem persists. Sinubukan ko harurot kagabi, after 2000 rpm, mabagal na ang acceleration nya.
I guess next in line would be to change the timing belt.

ilan na odo mo? imho, TB is not a reason bakit hindi maka accelerate ng maayos.

[b0y37]

ilan na odo mo? imho, TB is not a reason bakit hindi maka accelerate ng maayos.

88,000 km na rin, so due na for replacement.

[light2light]

Note on timing belt. For L300, the manual says, replace after 100km, however, it is safer to change at 80km coz the odometer doesnt register during idle or traffic. TB should not slip at any speed. I once heard about a TB na naputol. Tirik ang makina at 12K ang repair. Better safe than sorry.

[1D4LV]

ah ok.... palitin na din pala.... isama mo na water pump....
tapos dun mo na din ipa diagnose....

[Retz]

Kindly updates us TS if there is any improvement on your acceleration.

[shelu]

try mo muna ang mura, valve clearance adjust ka muna.

[LN106G]

If your timing belt is still OEM, ill wait until its 98k-100k km mileage. Your T-belt has nothing to do with your sluggish acceleration. But at your mileage, it is best to take a peek at your belts, 2 kasi belt ng 4d56, yung main T-Belt at yung mas maliit na Balancer Belt. Pwedeng maputol din kasi yung balancer belt earlier than yung main T belt. (Replace as Necessary). If both of your belts are ok, Try to use OEM airfilter first and quality fuel filter then have your valve clearance adjusted to specs by a competent mechanic. Use quality diesel fuel...

[b0y37]

Update:
I refilled worth P500 Sea Oil (last fill up was Phoenix) and hinaluan ko ng 50ml 2T. Parang medyo mausok pa rin at sudden acceleration, although I might be just paranoid. I havent had a chance to drive it past 100kph. What I did was put the gear in neutral, and rev the engine up to 3500 rpm (with AC and all the lights on). No hesitation naman, although mausok talaga ( I guess eto naman talaga ang behavior ng diesel).

Question: If there is a problem with my injectors, would I still be able to rev my engine that high, although in neutral?

Im crossing my fingers that I just had a bad fuel problem. Will still schedule TBelt replacement asap.

[LN106G]

If I were you, I'll have my nozzle tips (injectors) checked first if their opening pressure & spray pattern are still within specs, adjust valve clearance to specs install OEM air filter and then install OEM or good quality fuel filter. About the 2T, it has been discussed many times in the other thread that the best ratio is 1:200 to get the best performance out of your engine. So in your case 50ml 2T will be mixed to 10L diesel. You can delay changing our T belt at a later time.

BTW, you might also have a stuck-up brake caliper / cylinder piston that is causing your advie to be sluggish. You may want to check them too

[basti08]

I-advance mo timing. Did that to my Adventure before. A-OK results!!!

HTH

[b0y37]

Update: i rem0ved the air filter, and test drove my advie. Ramdam ung difference sa hatak, and napaabot ko ng 3500 rpm. Pansin ko lang, baliktad yung pagkalagay ng "fins" nung filter element, kaya siguro knakapos pag high rpm. Bnaliktad ko yung fins, and mas able to rev the engine til 4k rpm at neutral. Will test t0m kung ok n talaga cya.

*sir basti, id like to keep my engine in stock settings as much as p0ssible :-)

[sirkosero]

Update: i rem0ved the air filter, and test drove my advie. Ramdam ung difference sa hatak, and napaabot ko ng 3500 rpm. Pansin ko lang, baliktad yung pagkalagay ng "fins" nung filter element, kaya siguro knakapos pag high rpm. Bnaliktad ko yung fins, and mas able to rev the engine til 4k rpm at neutral. Will test t0m kung ok n talaga cya.

*sir basti, id like to keep my engine in stock settings as much as p0ssible :-)

Binaliktad mo yung air filter? Your sucking all the dirt that was trapped by filter to your engine. Excellent way of destroying the engine... just change the air filter with a new one