HOW TO : Pajero diesel fuel screw adjustment
Вставка
- Опубліковано 1 сер 2024
- How to adjust the main fuel screw to add or remove fuel throughout the entire rev range. Screw in to add more fuel and screw out for less fuel. I will not be held responsible for any damage caused to your engine. You follow these instructions AT YOUR OWN RISK.
It is recommended to have a boost and egt gauge to monitor your engine after making any adjustments. Sorry I didn’t follow up after this but I had some other repairs to do. I took the rad out then ran out of time. - Авто та транспорт
Thank you mate. im gonna try this.
Yep this is exactly what I need to undo on my Pajero, previous owner wound the boost up to 16 psi and wound the fuel up a bit far, so it just coals everywhere, and being on stock size exhaust its probably just burning itself down. As cool as rolling coal is though....
Pls make a detailed video of intake manifold cleaning😁 just love your videos .
As I am facing problems with excess black smoke 😓
This model doesn’t suffer from blocked manifolds. That’s the common rail ones. There’s a chap called Mr Pajero and I believe he has done a video on manifold cleaning for the 4M41 engine
ua-cam.com/video/KMW8N9JuEy8/v-deo.html
@@PERTHSCOOTER07 how to add power on this thing and does your 4m40 has electronic fuel pump cause mine has mechanical
@@MharyJoyCanimo mine is mechanically also. Watch my video for the fuel compensator and for the 4d56 boost increase
Woohoo thanks, pulls hard now, still not any real soot tho so wondering if I keep going? Done a full turn in, (3 seperate adjustments) and put the boost compensator at 6 like your other vid, how do you know it’s going as hard as it should? Just had pump reconditioned and new injectors, 0-100 is 22 secs (was like 45 before) I have no gauges yet, and standard front mount intercooler NM Pajero manual 4m40t
That’s awesome mate. I’d get some gauges first the be on the safe side. Especially an egt gauge. Then go a little more once the gauges are installed. Remember adding fuel is adding heat.
Hello, my 2.8 Paj was really sluggish at low RPMs, although I remember getting up to 120/130kph fairly easily before. After adjusting the boost compensator diaphragm, the car changed, I get boost early, and it's running much smoother. However, it seems like it's struggling to go past 2800 RPMs (115kph), I get there fast, then it's capped no matter how much I push the pedal down. Is the fuel lacking ? do you think adding more fuel will help with that ? knowing that I don't have an EGT gauge, only a boost one.
Edit: I forgot to mention that I'm running the same boost as you are 0.5 to 0.6 barg.
I’m running over 1bar. 16-18 psi.
Try adding 1/4 turn on the main fuel screw. See how that goes. You may have a problem with the pump or the injectors.
@@PERTHSCOOTER07 Thanks, I appreciate the reply. Will be looking into my injectors and pump.
Hi, I adjust mine a fair bit but still no smoke, although mine appears to be wound out quite a long way. About 10 mm at least of threads showing. Would you advise winding it in more?
Yes mate. Just keep playing with it till you think it’s right. It will help if you have an egt gauge to ensure you don’t run it too hot. More fuel = more heat
Hi there! My 4m40 AT keep on changing gear itself from 4th to 3rd gear when i try to maintain speed 70km/h to 80km/h on the highway. Is there anything to do with this adjustments?
Does it run a kickdown cable to the trans. If so it might be out of adjustment. If not it could be a coolant sensor issue causing it to drop in and out of overdrive
can you send me a video of the soot after you tuned it? heard it’s meant to be black on rev but clear on acceleration
Watch my video titled Hippo. You’ll see it in action
Can screwing in add more power? Any advice on how to churn out more power from this engine?
Yes. Based on the theory of more fuel and more air equals more power. Just watch out for generating too much heat
Hey got the 2.8 4m40 in my triton taken the top mount intercooler off and still can't find it looked everywhere
It’s on the back of the fuel pump facing backwards. If you do a google image search for Zexel VE rotary fuel pump you might see it on an image
I know this is an older video, but just wanted to say i have no idea how you made it look so easy! Let alone film it... hats off to you! For me, every fuel line ( I took fuel line clamps off) is in the way and there is absolutely no access for anything!! Did you move a load of lines etc before filming it? Im still in the process of trying to unscrew the retaining nut a little bit to allow the screw to turn clockwise some more. 😂 how you did that with a jacked up truck i have no idea!!!
Hi there. I know in colder climates the fuel pumps have more parts on them. Here in Australia we have no cold start equipment on the diesel pumps which makes them a bit easier to work on
@@PERTHSCOOTER07 that makes so much sense, thanks for the reply! Yes, directly in front of the fuel screw there are 4 fuel lines and then a whole host of other obstacles. I had to give up for today, but will work out a way of doing it. Your videos are excellent, so really helped understand the principle. Many thanks.
Hey man please do one on tyres. Like what the biggest size you can go/offset. I’m sure lots of people would like to hear about it
There are a lot of factors go into tyre size. I’d say 35’s are the biggest without doing some serious mods. My swb had 31’s when I bought it. Put 32’s with no mods. Put 33’s with 2” lift. Then 35’s with body lift. Could prob go 37’s but would scrub like crazy off road
As for offset, I’d say -23 is the biggest without serious poke. I know a few who have used -44 but they poke like crazy
Legend mate I’m looking at putting a set of 33” maxxis razr mt on my 1997 glx 2.8. Amd I was a bit curious as to what offset I should use
@@khyefitness8232 definitely 16x8 -23. That’s what I’m running
@@PERTHSCOOTER07 sweet Amd I’ve seen a few people shave there droop stops How far would you go down on them. I’ve seen some people say they cut there’s down to the bolt
Is this different to your fuel compensator video? I've put the fuel compensator up by turning it clockwise. Whats the difference between that and this?
The compensator adds fuel with boost. The main screw adds fuel from idle to full revs. So this adds fuel when off boost also
@@PERTHSCOOTER07 what about the screw that sits on top of the compensator?
@@alexandreromao8410 that sets the height of the compensator diaphragm. Playing with this and the spring underneath it can get risky. This is the territory where you’re chasing every last bit of hp. People who have swapped out turbos for bigger ones will mess with this. But on a stock turbo I’d just leave it
Hello from the UK! Thanks for this video, very simple instruction. Do you know if there is a small in-line filter in the pump? Mine: 2.8 1999 Paj runs like a dog, no boost, a couple of people have suggested a dirty filter in the fuel pump. I've changed the fuel filter and in tank filter and also a new turbo, but still the same. Supermarket fuel buggered it I think. Just wondered what your thoughts were, and a video for that would be fab! Have now subbed. : )
Hi mate. As far as I’m aware there’s no filter in the fuel pump. At most there may be a gauze to stop big bit getting in. Does the car blow any black smoke? If not try adding more fuel (main fuel screw). Does it run rough on start up (could be worn injectors). Does it use any coolant at all? These motors don’t like to get hot and will blow a head gasket easily.
@@PERTHSCOOTER07 thanks for your answer. Yes, i think it's the gauze people were talking about, possibly in a banjo bolt? Do you know which bolt it would be? No black smoke, not difficult to start when it's warm outside when it does runs absolutely spot on, perfect idle no cutting out. 1-2c then yes doesn't like starting. Funny you should ask, I just noticed the coolant bottle was empty, filled it yesterday but that's the first time in two years since I've had it. I will try this main screw and see how it goes. Thank you for your reply.
@@hardylioness yep. Add fuel 1/4 turn in at a time and go from there
Hi my friend. Is there a mini inline filter on the fuel pump?
I’m not sure. I’ve never stripped one of these pumps. Try googling to get an exploded diagram. Why do you ask?
Thanks!! I'm driving to perth as soon as boarders open would you be keen to show me some tracks?
Yes mate. I’m well overdue for a good off-road run
@@PERTHSCOOTER07 sweet as, follow @pajimbus on instagram and we'll get organising!!
Greetings from the Philippines! Love your videos! Trying my luck if you can help with a bit of smoke problem from my 96 gen 2 pajero 4d56t, here i can't figure out why mine smokes black on startup, my mechanic adviced me to get the injectors changed but when i watched your video i thought maybe the fuel is a bit rich? Now i wonder if i follow what you did here but turn the screw counter clockwise would it help? Also i'm not hearing my turbo sound on hiway speed so i was wondering if you have any idea how to check if the turbo works or not that a newbie like me can do at home? The engine runs great not above 100 km/hr though, thanks a lot in advance mate!
Hi mate. You are correct black smoke is fuel (running rich) your mechanic could also be right as if the injectors are worn out they could be putting too much fuel in. Try by turning the main fuel screw anticlockwise and if this doesn’t work you might have to go with the injectors. As for the turbo, with the engine switched off remove the intake to the turbo and grab the compressor wheel and see how much up and down movement you have. If you’re not sure how much it should be, look up videos on how to check for turbo shaft play.
@@PERTHSCOOTER07 thanks a lot mate, you're awesome!
Lovely video mate, I noticed your fuel return line is a banjo whereas mine has a solenoid. Wires are brittle and mine got disconnected when adjusting the fuel screw. Can you help me find where it connects? 😅
Hi there. Your model must be for colder climate with the extra cold start features. The fuel pumps have their own wiring looms with 1 multi plug to connect to the main loom. If it’s not self explanatory jump on the uk Pajero page (POCUK) and someone on there would know for sure. Sorry I can’t be more helpful at this stage
I've got the non intercooler 4d55t. Is it same for us? Also, hi from America!
Yes mate. Just be careful with temps on non intercooler model. Will be worth retrofitting one if you can get a hold of one.
Hey mate On mine I have a 2 inch suspension lift but the front is still a little lower then the rear. Do I just torsion up a little more. Or should I go and get extended torsion bars?
Watch my video on re-indexing the torsion bars. And trim the upper droop stops
Ok. I’ve also noticed a slight camber on the fronts. Will the re-indexing the torsions fox that
@@khyefitness8232 probably not. You can adjust camber by adding or removing shims from the upper control arms. It’s a bit of a long drawn out job with trial and error required.
@@PERTHSCOOTER07 ok thanks mate
And trialed sole tyres and can confirm that 33” by 315 will fit fine with a net offset rim. So I’m cheering
Hey i ned a little advice am i suppose to be getting fuel coming up under the fuel compensator diaphram????? Any help would be greatly appreciated.. thanks in advance...
I don’t know the full internal workings of the pump. So not sure. Is it definitely diesel? Could be a thin oil for the pin to move in.
@@PERTHSCOOTER07 no its definitly diesel if i open the compensator diesel comes out with a pressure.... and the van lags ah bit....
@@watlessgaming5391 no that doesn’t sound right. I’d say an internal seal has gone. Better get it looked at by a specialist
@@PERTHSCOOTER07 ok thanks...
Thanks for the front end videos you did👌🏻👍🏻👍🏻I’ve got the mk l200 and done the torsion trick on 2 different 4m40 Tritons I’ve had now however the perfect condition genuine
front drive shaft cvs seem to go clicky and bust the inner cv boots pretty quickly i haven’t never had changed them yet..only had 32x11.5 on my last one and 33s on this haven’t cut any bump stops yet.. is there anything I could have missed or is that how Mitsubishi’s ifs is?
If you fit manual locking hubs it will reduce cv wear as they don’t turn when the hubs are not engaged. Although I thought triton already had manual hubs?
Thanks for the reply mate.. okay from what I know the base models are all manual hubs and the glxr & gls are the auto ones with auto hub style transfercase front diff that’s for all years.. so the first one was a 2000 n/a 2.8 glx base model that had manual locking hubs was such a awesome rig then a young girl hit it head on had over 350000km still started and went like new then I replaced it with a “pos” 2004 two tone white and silver gls 2.8td 315000km top of the line (auto hubs) 24hrs after I got it the 4x4 chain in the trans exploed while I was doing 70 in 2wd so patched it up with 2 jb welds then it was “high riding” for a couple months while looking for the expensive replacement it’s all good now but have the manual hubs for it now anyway after all that drama
@@ducky88x10 haha. JB weld!!! If your cvs are wearing with manual hubs. Look at second hand good condition genuine ones. They’re the green ones. Genuine are 6 ball design. Aftermarket are 3 ball so have less range of movement and wear hell quick on lifted cars.
Yeah that jb weld got me out of trouble it’s not as good as “Fahrenheit”... thanks again mate I didn’t know that about the aftermarket ones definitely staying clear now lol.. mine have all been genuine green ones so probably going to try Pajero ones see if they handle it better.. do yours ever click with the shaved bump stops and 35s?
@@ducky88x10 no. I got good second hands ones from a wreck I bought and stripped, cleaned and put new boots and grease and they’ve been fine 2 years on.
What would be the use of adjusting the fuel screw
More fuel, more power.
Less fuel , less power but better economy
Thanks for another vid, have been waiting for a boost and EGT guage before I start playing with these adjustments. Got the boost now just waiting to tap the EGT into the EGR plate. How have you noticed fuel post compensation adjustment and also post this adjustment with the main fuel screw? Mine is pretty underpowered (4m40t) struggling to get up anything steep with ease. Long hwy hills no fun either, still boosting around 10-12 max. Hoping compensator screw will give me more down low. I'm in melb where are you?
I don’t drive this enough to notice or care about fuel usage. It’s my weekend warrior that comes out to play a handful of times per year. I haven’t even driven it since this video. I took my radiator out to access the aircon compressor pulley. Had dramas trying to get the pulley off and went inside for a beer. Lol.
@@PERTHSCOOTER07 ha too easy, this and an old BMW r100rs are my only to options to drive. So fuel is worth a thought although only getting 400kms to the tank atm ):
Ill be 1st then.... and.... i cant remember why i subscribed now... were you messing around with the vaccum boost a while back?
Yes I have a video on boost compensator adjustments
@@PERTHSCOOTER07 that'll be the answer then! I was trying to un-bodge a 4JH that had an HX35 on it boosting 60psi with more black smoke than a vulcan bomber on afterburn.
It sorted its self out in the end by throwing a rod. :(
Hello, nice video!!! I just purchased a 2001 Pajero with the 4m40 engine on it, but I had heard that engine is poor quality, it tends to overheat often and the cylinder head is very weak, in other words, grandma driving is the only way 4m40 will last. How is been your experience having a 4m40.
What you’re saying is correct. I ran a full alloy triple core radiator, a high flow thermostat and has auxiliary coolant temp and exhaust temp gauges and had no dramas. I also has a straight through 2.5” exhaust which also reduced temps.
Hey pal, does his mod have to be in conjunction with anything else. Or can I just adjust then fuel screw, and it's all sorted?
This will give more power but will work better if more boost added also.
@@PERTHSCOOTER07 just come across this video…. Brilliant info! Sounds silly but say if you add 1/4 turn how much boost would you be adding? I assume you would do it with a manual bleed valve?
@@Robert_Hall90 correct. I have a boost T. It’s a lot of trial and error adding boost and fuel so you really need a egt and boost gauge. I have another video on adding boost. It’s for 4D56 but same as 4M40
@@PERTHSCOOTER07 I have just watched your video on the boost compensator…. Havnt seen the one about adding boost can’t seem to find it…. Looks like il be having a busy evening 🤣 my 2.5 is so slow!
@@Robert_Hall90 click on ‘videos’ on my page, then click to order them by popularity. It’s my most watched video
Hey mate. Buying my first Pajero. Looking at lower km auto or higher km manual. Bothe 4m40. Any recommendations on which is better. Cheers
Hi there. The 4m40 is better in manual in my opinion as it’s not a very powerful engine. I also personally prefer manual for off road. What do you class as high kms?
@PERTHSCOOTER07 Thanks for the reply, mate. 400k on the clock. Well looked after and serviced regularly.
@@LetsGo-yy1pn that’s up there. It might soon need a diesel pump or a timing chain or a head gasket.
My diesel pump went at around 350k
@@PERTHSCOOTER07 awesome thanks for your input. Much appreciated
Hey just an idea, but could you do a video covering all the basics and useful common info on the 4m40? Is really not easy to find a lot of common info on them in one place 😬
That’s a great idea. I’ll look at doing this in the future. I’m a bit time poor lately as I bought an old house earlier this year that I’m renovating
Hey man, I got a Pajero mk2 2.5 diesel but the fuel consumption is very high, the power is good and I got a little black smoke so can I adjust mine same as you for less fuel consumption ?
You need to do the opposite of what I did so you are adjusting for less fuel.
@@PERTHSCOOTER07 i''ll try it tomorrow hope for better results because the fuel consumption is insane with full tank I made around 350 km, I think that's too much
Great videos! Where is your EGT sensor and what readings do you get? Mine peaks at about 450c when driving up the freeway. The sensor is in the dump pipe. Cheers
It’s in the centre of the manifold and will sit around 600 when doing 100/110 on the freeway
@perthscooter Hi there, my pajero 2.8 fieldmaster is consuming a lot of fuel. 4kmpl. Is there any adjustment to the fuel pump that I can do ?
You can try the opposite of the video to run less fuel. But it could be other things such as pump timing or bad injectors
@@PERTHSCOOTER07 thank you so much mate. What is the ideal city kmpl we should be opting for in 4m40 ?
@@saumikabeer7269 I’m not sure. These cars are getting old so vary a lot. I was getting 600km per tank for normal on road driving.
@@PERTHSCOOTER07 hey mate, I'm unable to find the fuel screw in my 4m40. Is there any other way to identify it ?
@@saumikabeer7269 go on google and image search for Zexel bosch rotary pump. There’s heaps of diagrams and some will list the components
Clockwise to increase or decrease fuel pump?
Clockwise (screwing it in) adds more fuel
@@PERTHSCOOTER07 thanks 😉🍻
Hi, my dad has a v44 2.8 Pajero that has issues during idle. The issue is that the fuel mixture is incorrect during idle which releases white smoke. Are there any like screws or sensors that relates to this issue? The engine works fine above idle as usual except for the fact that white smoke occurs during idling only. Thanks in advance!
White smoke at idle (as long as it’s not burning coolant) is usually worn fuel injectors
How did u get the front level with rear
Look through my videos for torsion bar re-index
@@PERTHSCOOTER07 i did that its up all the way but still looks i got 2 inch lift
@@godzilla3306 sounds like you might be topped out on the droop stops. If so cut them right down
@@PERTHSCOOTER07 thank you brother
So I guess this would still help on a none turbo 4m4o
Yes within reason. Just don’t overdo it as you’ll just start generating heat. The beauty of a turbo is you can add air also.
And also in the challenger
Where are you mate? In Australia the old Challenger only came in Petrol. And the new Challenger is CRD
Hey mate do you have a email I could contact you on a have a nh Pajero that I’m looking to do some work on cheers
Scottmarkingham@hotmail.com
Did you turn it clockwise or anti clockwise?? lol
Clockwise (screw it in) for more fuel.
Perth der! Haha