TD4 fuel filter

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Darrnw

New Member
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Yet another problem! As everyone knows I am having problems starting my TD4. Today I took off my fuel filter and second pump. The fuel filter was less than half full so I topped it up to the top, I checked my pump was working by connectng it to an external power supply. I have put both back in and now my car won't even start with a bump or easy start!! It burns the easy start then stalls. Have I filled the filter up too much? Does the sytem need priming? If so how do I do it? As always any help gratefully accepted.
 
Yeah there seems to be. But I can't understand prior to filling the filter and removing the pump it would start with just a whiff of easy start now nothing! Does it matter that it is filled right to the top?
 
I'm new to these Land Rover things but as I understand it on a common rail diesel, the fuel line is presurised and there's a solenoid that releases diesel into the injector. So if the fuel pump is working then you shouldn't have a fuel delivery problem.

I think in the brief reading up i have done on these cars its possible its something else like the MAF or cam sensor? I gather they are well know to give problems? But dont hold me to that. Maybe a search of the archives will find exactly what happens when the MAF or cam sensor plays up? I dont think you have a fuel delivery problem, but I'm not a mechanic, just someone with lots of experiance of broken vehicles!;) :p
 
Thanks for the help. I was wondering if I had got air in the system or worse water. When I had the pump out I ran water through it! I know not the cleverest thing to do but I ran it dry afterwards and shook it to get the excess out. I was wondering if some water could have got in to the fuel supply if anything it would only be a few drops . In retrospect I should have got someone to get me some diesel and ran that through instead!:confused: But hindsight is a fine thing. If any water is in the system is there any way to get it out? If not will it do any damage?
 
Diesel is fuel but alss the lubricant for the pump. Running water in a pump would be like running an engine without oil!

Does the car not start at all? If it does would it run at revs and just die on idle, or not even rev? The problem is MAF sensors and some others dont always throw up fault codes.:rolleyes:

Has this been on ongoing thing then? I'm off out now but I'll try and read trhough what you've posted on it elsewhere and see if anything resembles a problem I've had. :)
 
Not even rev. Yes it's an ongoing problem. It would start and run fine with easy start or a bump. Not since taking the filter and pump off today, fuel supply coming out of filter so the pump is still working. Had it on T4 diagnostics on Thursdayand nothing was flagging up! If I can get it going I can take it over to another LR specialist on Monday.
 
Ta Mondo! The rear pump is working an pumpin through like a Gud un! But when I cahanged it in the week I mustn't have put as much in as I thought I had the question is can you over fill um?
 
Darrnw said:
Ta Mondo! The rear pump is working an pumpin through like a Gud un! But when I cahanged it in the week I mustn't have put as much in as I thought I had the question is can you over fill um?
Click to expand...

I wunt av thought so, but if you filled it before an now its half full, either it aint pumpin right,??? (you say it pumps ok with a direct supply) so check its gettin one when connected to the car, Its draggin air in???
maybe floppy can have a shuf of his rave cd and let you know wot controls/supplies it!:rolleyes:

Ow come four post appeared after i posted this????
must a bin grunt ghosty thing agen
 
Sorry Mondo what I should have said is there is a possibility that I only half filled it in the first place.
 
Sorry darr!
i dunno myself (never changed one on the hippo yet) but if both the inlet & outlet are at the top like i think they are then you shouldnt have to fill the new one, just cranking it should do the job eventually.???
dont know if you would shift the water now tho!!!???
you might have to take the injectors out to see if they still chuck fuel out
Well thats where I'd go next.....and yes they are under high pressure so take the nessasary precautions, before the burning bush brigade get all excited!!!:rolleyes:
 
sorry guys - my CD appears to be only for the petrol modelsn - I can post fuel systyem pressure tests for the "K" abd the "KV6" - but not sure that will help you - and anyway - I am still enjoying the wafting palm fronds at the mo (see uvver fred ;))
 
jpg.gif
Ok darn ,hope this attatchment works,if not i will try again later,ok when you took that filter orft it should be full[the td4 is self priming ,should have to turn over quiet a bit till it starts]ok i know yours will not start, so also in the rear pump bit is a pr [pressure regulator and it should be bout 3.5bar after 12sec off ing/on] there is also a non return valve, there is also a self tank venting device and if the motor tips over , a device ta stop fuel spewing out the tank,why am i telling you all this? cos i still think your problem is there in yer rear bit[snort], ok so it could take you ages to disproove or proove all this twadle, so again make up a header tank [a bucket wiv diesel in it]tied up high[gravity temp fuel pump] pull the electrical circuit to pumps[otherwise it will spew out], get some 4-6mm flex hose ,connect ta bottom of bucket and input circuit of o/p off lift pump pipe [might have ta make up a connection for pipe ta pipe] and if motor starts ,fault is anything past,if not all circuits afore,like high pressure pump, , ,and best oh luck earthling. . .:)
 

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The Mad Hat Man said:
its a bit small, Minge (as mrs Minge once said) cant read the detail.
Click to expand...
Um if ya double click on it then double click on next bit ya get a little symbol click on that and all is fine,hum earthling technology is ****e me thinks. . ..:mad:
 
Hi,

For what it's worth but did you check whether the "earth" connection at the hidden side of the fuelfilter is/was still connected ?? There is an earthconnection to the filterhousing and this is rather hard to see, it's on the front of the backside of it, best look from front of the car or feel with your fingers between the innerfender and the filterhousing.
 
hello , darrenw
i had exactly the same problem. i have a td4 and it was not starting well then one day it would not start at all change diesel filter (which was very dirty) tried starting it but no fuel!!! the problem was actually the pump in the tank WORKING ITERMITENTLY!!! i removed pump from tank and put direct supply to it, no good. but then with supply still attached i gave the pump a tap and it worked. so this may be whats happening. is it possible that when you disconnect the outlet pipe from fuel filter you get fuel coming out, but when connected to the system the pump , if failing intermitently, cannot handle the back pressure. might be wrong ,iam quite new to freelanders. hope this helps troy
 
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