2.4 fuel filters

[lacroupade]

So blank it off from the pipe which connects from the exhaust???
Can try that at lunch time and give it a whirl up the big hill near work, that will soon tell me :thumbs

Read the download first though!! Its about number three in the workshop downloads menu...:thumbs

 

[Muckypup]

Read the download first though!! Its about number three in the workshop downloads menu...:thumbs

Mines a 2.4 petrol, the download is for a 2.7td. Obviously they must work in the same way, powered by a vacuum pipe. So does that mean I just do the same job on the petrol model? :nenau :thumb2

 

[lacroupade]

Mines a 2.4 petrol, the download is for a 2.7td. Obviously they must work in the same way, powered by a vacuum pipe. So does that mean I just do the same job on the petrol model? :nenau :thumb2

I'd say so, its like an appendix, useless...

 

[Muckypup]

Off on the hunt around the store for a ball bearing :clap

Will report back after lunch...

 

[Muckypup]

Ok... blanked off the EGR, still got the fault :doh

to re-cap...
changed plugs, rotor, leads, dizzy cap, coil, air filter, fuel filter, ignition switch, removed blocked cat, fit new fuel lines, isolated EGR...

STILL BACKING OFF THE POWER! GRRRRRRRR

Really would not be so much of an issue if I didnt have the big hill to climb umpteen times a day and it just goes soooo flat! Touch the pedal lightly it seems fine, put your foot down and pretty much nothing happens apart from a a bit of shuddering. Change down a gear it revs up sweet, release the clutch and you feel the power ebb away and it reluctantly revs up at half power.
Thing is tho, its like a rocket ship on choke??? Fault is not present until off choke.
My opinion is that it just seems to not be getting enough fuel. Revs fine out of gear, but put it under load and its like its got Asthma or something lol! But again, no issue on choke and a rocket ship compared to normal driving.
I changed the main fuel filter (the one below the drivers door halfway down the car) but wondered if there is another somewhere??? I heard of a mini one on the diesels??? Could my fuel pump be running half willed??? Could it be the injectors???
Been trying to solve this since last Autumn... I cant and wont give up, we must be close now... surely... :nenau

 

[Terranosaurus]

Keep saying this - have you checked you timing?

Also choke - what choke?

I go back to what I said before MAF and other sensors especially temp senders and lambda.

 

[Muckypup]

Choke - When you first start the car from cold, for a couple of miles the car runs fine. My knowledge is very limited, but I presumed there would be an auto-choke or similar fitted to the car? I wondered if there is, that it may be doing something that helps but when it switches off a mile or so down the road the fault appears...

MAF sensor - apparently it does not have one. I have phoned Nissan and Ford and they both say the same, there is no such part listed. :nenau

I suppose timing has to be the next thing to check then. But im confused, how could it run fine for a while then not? If the timing were out would it not just run shite all the time?

Quick question... where is the plug in for diagnostics located on the car?
I have found a guy (asian fella) who recons his all singing all dancing every piece of software lap-top will definitely diagnose the problem, yet I was told from someone else software only goes back to 99 models... and also my engine management light is not on

 

[Terranosaurus]

Your correct the parts catalogue doesn't show a MAF for your truck but then it doesn't show one for my (now sold) slightly later 95 2.4 petrol but it sure as anything had one.

Pg 145 onwards HERE shows you where it is, what it look like, how to test ut and all the other sensors related to the engine management.

There is no choke as susch on fuel injection vehicles - what there is is electronically controller fuel enrichment for cold running, as the temperatures increase this enrichment reduces but it is all done using sensors, if these aren't working correctly it won't respond right and equally if they are supllying the wrong signal once warm it won't respond correctly.

IIRC from cold it works purely "off the map" (pre designated figures) and once warm switches over to a closed loop feed back using the MAF to set initial fuelling and the lambda to refine it.

An exhaust leak (sucking air in) could cause the symptons you ae suffering too.


As for the OBD port - sorry not sure, never used it on my old one.

But on the diesels it by/below the fuse box and on the KA24E engine WD21s its in the same place so I'd guess its there. IIRC the ECM/ECU/ECCS itself is under the drivers seat.

 

[Muckypup]

Your correct the parts catalogue doesn't show a MAF for your truck but then it doesn't show one for my (now sold) slightly later 95 2.4 petrol but it sure as anything had one.

Pg 145 onwards HERE shows you where it is, what it look like, how to test ut and all the other sensors related to the engine management.

There is no choke as susch on fuel injection vehicles - what there is is electronically controller fuel enrichment for cold running, as the temperatures increase this enrichment reduces but it is all done using sensors, if these aren't working correctly it won't respond right and equally if they are supllying the wrong signal once warm it won't respond correctly.

IIRC from cold it works purely "off the map" (pre designated figures) and once warm switches over to a closed loop feed back using the MAF to set initial fuelling and the lambda to refine it.

An exhaust leak (sucking air in) could cause the symptons you ae suffering too.


As for the OBD port - sorry not sure, never used it on my old one.

But on the diesels it by/below the fuse box and on the KA24E engine WD21s its in the same place so I'd guess its there. IIRC the ECM/ECU/ECCS itself is under the drivers seat.

:thumb2 thanks for that!

Just bobbed round to a garage I know who took a quick look and when you open the throttle hard there is a bit of a blow from the exhaust somewhere in the down pipe / manifold area but cant see where its coming from. After your comment about the exhaust sucking air in i wonder if it could be that? :doh

 

[Terranosaurus]

Mine used to run like a bag of knackers wen the exhaust manifold was blowing I was never able to keep it tight after I changed the downpipe even though I bought brand new studs, nuts etc as well as the exhaust and gaskets.

The petrols are known for cracking the cast iron exhaust manifold, but also the pressed steel 2 into 1 section tends to corrode where you can't see.

 

[sidsid06]

you say you remove cat? you replace with new 1? if not you may be lossing back pressure! ie no guts!! just a idea! as when i was a young boy put big pipe on my xr2 as you do!! and it was slower no back pressure!

 

[elty001]

never thought about the cat:doh
my old renault had a faulty cat.it would run fine until you put it under load then it would splutter and judder.
the honeycomb section inside the cat had broke and was restricting the exhaust when under load.

 

[Muckypup]

you say you remove cat? you replace with new 1? if not you may be lossing back pressure! ie no guts!! just a idea! as when i was a young boy put big pipe on my xr2 as you do!! and it was slower no back pressure!

The internals of the cat were fooked and when it reached operating temp it was not allowing gasses to flow properly and the enging quite literally died and would only tick over. You had to switch the engine off and let it cool to drive on. I had powerflow exhausts make me a proper de-cat pipe which I fit and when the car is actually running ok (on cold start) its like a rocket and you can tell its actually helping. Its just something is not quite right with the air/fuel under load when warm.
The issue is getting better with every step i take, but its still not right and im the kind of driver that believes their car should be running 100% not 75%.
I spent quite a bit of time examining the exhaust and manifold and im not happy with it under load, there is definitely a slight leak. I was told if this was the case the lamda sensor would not work right which will tell the ecu to richen up the mixture or alter the ignigtion timing which could cause a loss of power.
So as was recommended previously in this thread my next step is to make sure the exhaust is properly sealed, clean the Lamda sensor and check the timing :thumb2

 

[sidsid06]

The internals of the cat were fooked and when it reached operating temp it was not allowing gasses to flow properly and the enging quite literally died and would only tick over. You had to switch the engine off and let it cool to drive on. I had powerflow exhausts make me a proper de-cat pipe which I fit and when the car is actually running ok (on cold start) its like a rocket and you can tell its actually helping. Its just something is not quite right with the air/fuel under load when warm.
The issue is getting better with every step i take, but its still not right and im the kind of driver that believes their car should be running 100% not 75%.
I spent quite a bit of time examining the exhaust and manifold and im not happy with it under load, there is definitely a slight leak. I was told if this was the case the lamda sensor would not work right which will tell the ecu to richen up the mixture or alter the ignigtion timing which could cause a loss of power.
So as was recommended previously in this thread my next step is to make sure the exhaust is properly sealed, clean the Lamda sensor and check the timing :thumb2

i know changing ehausts makes a big difference to how the engine runs!!! on my ducati motorbike had the pipes changed! then had to have a power comander fitted! and the bike set up to run right! if left would not run correctly!!! must be the same on a car would of thought! have this bike now tho

 

[zippy656]

oh look, got a little stand so he dont fall off

that so you can sit on it on the drive a pretend to be riding the TT??

 

[sidsid06]

oh look, got a little stand so he dont fall off

that so you can sit on it on the drive a pretend to be riding the TT??

how you know im a short ass and cant reach the floor you are a real god scarry

 

[zippy656]

thats why you've not done a body and suspention lift. need a step ladder to climb in!

 

[sidsid06]

thats why you've not done a body and suspention lift. need a step ladder to climb in!

dynnamite comes in small stick

 

[zippy656]

ill leave that one for the ladys to answer

 

[Muckypup]

Niiiiiiice.... but it aint got four wheels and two gearboxes so im afraid its not for me
Bet its fun tho

There was clearly a lot of small faults with my car because every time I try something it gets a little bit better, the old cat was causing huge problems and replacing it with the de-cat helped a lot but highlighted other issues.
Looking at the exhaust next to make sure its all properly sealed up :thumbs