300TDI Injectors

[andkat]

Hi all, just picked up 4 new injectors from the UK, for under $400.00 air freighted to OZ!!!!:cool:
Now the question, once installed do I need to prime the system again by pumping the manual pump on the fuel pump, or as the TDI motor has a mechanical pump will it prime itself? Checked the Haynes manual and then the Rave Disc, dosn't seem to say much?
cheers
Crawf:)

[rangieman]

I would think you would have to prime it , But then again when ever ive replaced my fuel filter on my 300Tdi i havent had to prime it
Id just try it and see if it needs to be primed:D

[sumo]

Hi all, just picked up 4 new injectors from the UK, for under $400.00 air freighted to OZ!!!!:cool:
Now the question, once installed do I need to prime the system again by pumping the manual pump on the fuel pump, or as the TDI motor has a mechanical pump will it prime itself? Checked the Haynes manual and then the Rave Disc, dosn't seem to say much?
cheers
Crawf:)

The fuel should still be up to the injector pipes if you have only undone them at the injectors. iwould just leave one injector pipe loose and whir it over, it should fire up , re tighten pipe when it does.

Cheers Sumo.:D

[Blknight.aus]

crank any diesel engine long enough and it will prime itself.....

not that that helps the new injectors tho....

the longer you crank it without fuel in them the more likely you are to hotspot the needle.

carry out the full and correct bleed sequence, preferabley after youve fed a shot or 2 of dieso through them without having them in the head.

The other advantage of doing this is it lets you see the spray pattern of them to make sure that they all crack and spray about the same.

[Red October]

It depends on how long the fuel in the system has to drain/leak while the injectors are disconnected. Install the injectors as if you mean it but just nip up the pipe connections at the injector. Then back them off about half a turn.
Connect up another battery as if jump starting, then crank the motor over (assistant required) until you see fuel seeping from around the fittings. stop cranking, tighten the fittings and crank the motor over again. It should start. Check for leaks, it's not unknown for leaks to occur at the fittings with new injectors. It's also worth backing off the pipes at the injection pump end to release any tension in the pipes and make sure the clamps are evenly spaced to prevent the pipes from cracking-rare but it does happen.

[SSmith]

$400. nice!, where did you get em from? im thinking mine will need to go soon.

ill 2nd what blknight says re the bleed/priming sequence. the better you treat em the longer it'll be till you have to do it again

[Leo109]

Hi Andkat,

Can I ask how many kms your old injectors have done and how/why you decided to change them? Something noticable like reduced performance/more smoke/more consumption - or just because they've done a lot of kms?

Interested because my 300Tdi has nearly 240,000 up now on the originals. It still seems to go as well ever, but not quite as economical as in the past.

Planning to take mine out and look at the spray pattern when I organise the facilities to do so but I'm interested in others' experiences.

Thanks,

[Bush65]

Don't touch the manual primer lever on the lift pump.

With a used lift pump, the diaphragm can fail because the manual lever can extend it beyond it's normal working stroke. When the diaphragm fails, diesel will contaminate the engine oil and can lead to bigger problems.

The lift pump can not produce pressure in the lines between the injection pump and the injectors.

[Bush65]

At that price, were they genuine bosh injectors?

The non-genuine are a little cheaper than the genuine bosch at my local supplier.

[andkat]

Bush 65- They are the Genuine Bosch -ERR3339
Got them from Paddocks,

Leo109- Mine is pushing the 250k mark now, startingto notice the loss of power, fuel consumption is increasing, and quite a lot of smoke when chugging up hills, the Turbo has been checked so I thought for the cost 0f $89.00 AUS versus the $245 I was quoted here in OZ, it was cheaper to get them from Paddocks, and freight them here, 5 day turn around from placing of order!!!
Just ordered some Silicon hoses alot cheaper over there than here!!!!

[jik22]

$400. nice!, where did you get em from? im thinking mine will need to go soon.


Paddocks do them at around £35 each for the 300...and they don't cost much to airmail.

I was lucky - I picked up a new set off eBay for £50 posted - just have to collect them from the MIL's when I'm over next month. :D

With hindsight I should have had the second set he was selling too, and put them up for sale on eBay Aus. :(

[andkat]

34.00 pound $82,00 AU, $30Au Freight not bad really:cool:

[redrover3]

Don't forget to post up the results. Mine have done 330k and its a bit down on power, economy so I'm looking at getting some from paddocks.
Tony

[sumo]

Don't forget to post up the results. Mine have done 330k and its a bit down on power, economy so I'm looking at getting some from paddocks.
Tony

330k, starting to get up there!!, just out of interest have you had any dramaswith the tdi other than there normal wear & tear ?

Cheers Sumo.:D






annoying things?.

[mcrover]

If youve got a break off pump then I would do what Dave said to do and there is no advantage in hand priming it as that only primes the lift side of the system.

As far as removing and fitting the injectors goes:

a. use 2 spanners (one tube spanner if you have it) so you dont turn both the fitting and the nut and break the line when removing and retightening them.

b. Leave the lines loose on the injectors and crank until you see diesel and no bubbles coming from the lines.
In doing this, it may start so if they are only half a turn (as stated before) you can nip them up fairly quickly but be aware that it is a fluid under extreme pressure so make sure you dont get in the line of spray as it will penatrate the skin and cause big dramas.

C. Dont touch the lines at the pump as want to keep as much fuel in the lines and loosening them will just drain them and make it take longer to reprime.

I have never had problems starting new injectors in other engines but Ive never had to do a 300TDI.

[redrover3]

330k, starting to get up there!!, just out of interest have you had any dramaswith the tdi other than there normal wear & tear ?

Cheers Sumo.

No, only things that have been changed in the whole engine and driveline are alternator, drivebelt tensioner, coolant bottle, hoses and belts and I've just replaced the torque converter.
Tony

[andkat]

In the 4yrs I've owned my TDI, I have replaced the following:
New Head
Alternator
Starter Motor
Radiator
New Pwr Steering Hoses
Timing Belt
All new Cooling Hoses
New Rotors Front and rear
New Brake Pads
Rebuilt the transfer case
Raised the girl 2"
Put offset trailing arms front and rear
New Driveshafts Front and rear
Got rid of the stupid Ruber Donut on the rear driveshaft( Highly Recommend this if you have a 2" lift )
:cool:
You all ask why???????????????????????????????????????
Because it has been a sensational vehicle, alot of the items replaced were done as precautions, as I bought the car at auction. Ask me if I will buy another Disco!!!!! the answer would be YES!!!!!:cool:

[LRHybrid100]

I got mine from Paddocks a couple of years ago when converting the Rangie to a Tdi - about $400 landed.

Just remember to remind them to send via Royal Mail - to avoid the Import Duty / GST etc if using a Courier Company (less than $1000 inc freight had not duty if via mail).

LRH

[Disco_owner]

Just Found the web site for paddocks,

http://www.paddockspares.com/scp/DISCOVERY_1/Engine_Parts.html


cheers.