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Hi All
From memory most filters for common rail are 5 micron and you need 2 micron to keep water out.
Common rail has an almost 0 water tolerance - the fine rust mark is enough to cause drama's
All fuel has some water even if it is absorbed through the air
So most vehicles filter systems are setup to fail
Regards Mark
My Prado injectors failed at 81000 km. Toyota initially quoted $7000 to replace and then offered me a deal of $5000!
Found a place in Perth called united fuel injection who were great and replaced for $3000.
Gave me a good excuse to sell what was then still a good car and order my new Defender ...which I finally get this Tuesday!
As well as having an aftermarket pre filter / water separator I squirt a dose of Moreys DSK in the tank every time I fill up
MOREY’S DIESEL SMOKE KILLER | Morey's Lubrication Systems
Racor sell a good Aux 2micron Fuel Filter that has "special filtering paper" that repel's water and will not let it through...... the Element though is not that cheap to replace though..... around $80>$100 or there abouts. This filter is heavily used with crd engines.....
Quote:
Originally Posted by garrycol
I read of a few people that have suffered from that and a mate of mine has also suffered from that as well.... They've all been in the 120's Prados though, not the 150's. Bailey's Diesel has developed a better and cheaper injector than what Toyota offers..... I think a set of 4 is somewhere around $1500 (exchange) or there abouts....
http://www.baileysdiesel.com
Quote:
Originally Posted by EastFreo
Garry. There are filters that allow fuel but not water to pass through. There is even a funnel on the market that has a filter in it that does the same. Deigned for filling from jerrys.Quote:
Originally Posted by garrycol
I have even heard of one pedantic person using it every time he gets fuel from a servo.
All I can say is that he must be patient.Quote:
I have even heard of one pedantic person using it every time he gets fuel from a
servo.
I have the highest flow one and it is so slow to pass diesel that you would have a riot at a busy roadhouse.
I gave up the idea of using it every time after one go at a quieter roadhouse.
Regards Philip A
The issue with filters and water traps in CRD vehicles is the rate that fuel is recirculated through the system to cool and lubricate the high pressure pump. Water watch and similar systems rely on a sensitive sensor and a reservour which will catch water quickly and allow the operator to shut down before the water can make it past the filter. Due to the high flow rate hygrophobic filters run the risk of being damaged due to the pressure build up of a large amont of water and letting it pass. All of this also needs to avoid warranty claims from the manufatcurer if fitted to a new vehicle.
Having said that I have never had an issue with contaminated fuel in 250,000 KM in the D3. The biggest risk is from privately owned fuel bowsers that may not be properly maintained. Commercial fuel vendors have a pretty strong motivation to not sell contaminated fuel.
Regards,
Tote
I can't see where you would place a 2nd filter on a TD5 engine. There is no fuel injection pump. The fuel pp is a two stage pp , fitted in the tank with flooded suction. Fuel is pumped by the LP stage to the fuel filter, at 0.75 BAR , goes back to the pump assembly to the HP stage & is pumped to the fuel pressure regulator at 4 BAR, the regulator maintains 4 BAR at the injectors. The injectors, by black magic, individually maintain 1500 BAR at the point of injection. Fuel returns back thru the regulator, the regulator returns excess fuel to the cooler, & then via a return line to the filter & fuel pump. To me, the only place for a second filter would be on the LP line from the fuel pump to the filter. There is no room, from what I can see.
There are 3 other gauze filters in the system, in the fuel pump at the HP & LP stages, & in the FPR. Admittedly, for solid matter only. The water sensor & alarm lamp are the only protection against water in the fuel, from what I can see. Bob
I should have worded it better,I don't use it at every servo,just in the bush for the first 10ltres or so to get an idea of what I'm putting in the tank and filling from Jerries,I also do the cooling system on the Tdi every year,find a post where I bitching about spending $$$$ replacing the head ;),it's the little things that make a difference. PatQuote:
Originally Posted by d2dave