Outer Limits 4x4 Board

hey guys! my hilux 3.o ltr diesel seems to be losing power and blowing smoke . i have been doing services every 5000ks etc. oil, oil filter , fuel filter , air cleaner but still losing power sum how please help its driving me insane ! any ideas

gday mate sounds like the injectors need replacing but that just depends on how many kms r on it? usually around 100000km roughly

that makes sence because i bought it with 106, and its now got 120 so the guy i bought it off maybe didnt get them done . thanks adamant cheers mick.

next question? does any one no how much ruffly this will cost

id recommend checking injector pump timing first and then service the injectors and if that doesnt fix O/haul the pump where abouts are you located

i live on the central coast. i dont if this means much but i had the timing belt done 5000ks ago. if that helps

no not really its to do with the pump when to inject fuel at tdc at no1

i just got a reconditioned set from brisbane diesel injectors at rockleea (not much help to you) but i did a swap with them - give 'em my old injectors and get some newwies for $270. i can notice a major difference in power and smoothness. by the way my LN106 has done nearlly 200000klms

a major difference in power sounds good i guess it must be injectors then i best be getting them looked at real quick . who knows i might even stay in top gear up some hills again

daniel1 wrote:id recommend checking injector pump timing first and then service the injectors and if that doesnt fix O/haul the pump where abouts are you located

why would you fiddle with the pump timing - it doesn't change unless the pump has been removed. at 120,000km it is unlikely that the pump has been off, and it's also unlikely that the pump has problems. Injector wear can have a negative effect on injection timing but this is corrected by renewing the needles and seats in the injectors, resetting the cracking pressure and spray pattern.

leave the pump alone until the injectors are sorted out, if injectors don't solve your problem then the pump may need attention but it is very unlikely that pump problems will cause smoke (overinjection), pump wear is more likely to manifest itself as underfuelling and a lack of power with no smoke.

only time i know of the pump causing black smoke is when the govener diaphram in mine went out to lunch, but that was coulped with a 2000rpm idle.

i spoke to the mechanic today he is going to check my injectors out tomorrow and se whats going on. thanks to those who replied i will keep yous posted to let yous no what was wrong cheers mick

How's your fuel economy?, dont know if it applicable on your engine, but on the 2H, sometimes the fuel adjustment screw can come loose and cause overfueling = smoke and lost power.

quick60 wrote:How's your fuel economy?, dont know if it applicable on your engine, but on the 2H, sometimes the fuel adjustment screw can come loose and cause overfueling = smoke and lost power.

not really applicable to the rotary pumps - the fuel screw screws IN for more fuel unlike the 2H inline pump, so if it comes loose you start getting less fuel/power.

you'd have to almost deliverately leave the locking ring loose on a 2H for the screw to come loose?

THE MECHANIC DIDNT REALLY LOOK AT IT HE TOLD ME THAT MAYBE IM BEST OFF GOING TO A DIESEL SPECIALIST . OR TAKING THE INJECTORS OUT GETTING THEM LOOKED AT. BUT WHAT IF THATS NOT IT . THAT MEANS TIME OFF WORK FOR NOTHING AND MY 4X4 AINT FIXED.DO THE INJECTORS NEED DOING AT 100KS IF ANY ONE KNOWS FOR SURE PLEASE TELL AND I WILL BOOK IT IN. OR DO I GET ONE OF THOSE UNJECTOR CLEANING SYSTEMS PUT THROUGH PLEASE HELP. CHEERS MICK

yes. the injectors need servicing at 100,000km. or less if it has had a hard life. it is in the factory service schedule. and yes you should definitely take it to a diesel specialist.

thanks dumbdunce. im pulling the injectors out and taking them to a specialist near me asap thanks again to every body for your help i hope i can return the favore some time

Had ours done on the 4runner about 6 weeks ago - rebuild of injectors & injector pump ( was leaking ) $1520 inc labour. Looks like pump hadn't been touched since new! Truck has 440,000km on it.

If the injectors weren't done at 100K, what about the timing belt ?? Not sure of the belt life in the 3.0 litre, but the 2.8 is 100K



Mick_N_Sal

i done some research today and the injectors are going to cost $295.50 for exchange injectors i dont think thats to bad . that means i can do it in one day and im back on the road i had my timing belt done at 115ks witch was probaly a bit late. it should of been at 100ks. mick_n_sal im glad my pump aint leaking i couldnt afford $1500 right now with a baby just about due. thank guys

um

my injectors have done 380 thousand and have NEVER been out.

in an indirect injected diesel it is the pre combustion chamber that performs much of the swirl and the swirl and spray generated by the injector is not _AS_ important. (bad injectors will still cause problems)

is the 3litre direct injected?

if not i seriously doubt its the injectors, i have had no experience with the 3litre diesel but my old mans 2.8 diesel did 220 without the injectors being touched also.

trouble with taking it to diesel specialists is that they almost always recomend a pump overhaul. Every time ive taken my cruiser to a diesel specialist (3 or 4 of them) they have all said that the injector pump needs an overhaul, well, its still going strong, 100k later....

ok ive changed injectors and its going much better in the power department but ive still got a light tapping noise in the motor it sounds like noisy tapperts or lifters any ideas

ok ive changed injectors and its going much better in the power department but ive still got a light tapping noise in the motor it sounds like noisy tapperts or lifters any ideas

MYTOYLUX wrote:ok ive changed injectors and its going much better in the power department but ive still got a light tapping noise in the motor it sounds like noisy tapperts or lifters any ideas

good to hear about the revived power.

have you adjusted your tappets at all? my old man adjusted mine in the 2H recently as they were getting noisy. If yours are the bolt and screw type adjustment it will be easy, if they are they shim type it will be a pain.

you can use a set of feeler guages to check wether they need adjusting. Youl need the specifications though.