Member Since: 03 Sep 2016
Location: West Mids Walsall
Posts: 871
how does the piston hit the injector ?????? when its unplugged it just stops the fuel surely
ive changed all my injectors over from my other D3 last weekend (the engine i took from sounds v nice ) and guess what i still have the exact noise he has before i changed themMetal auto sump & fluid change (3 hrs)
LR door puddle projectors (10 mins)
Tinted Bonnet wind deflector (10 mins)
All Intercooler pipes and Tbolts (2hrs)
3 injectors replaced so far (30mins)
Sunroof drain pipes both sides 2.5 hrs)
Rear discs, shoes,pads,callipers,flexi hoses, rigid brake line, n/s upper hub carrier bush and rear n/s upper arm (13hrs over 2 days)
8th Apr 2019 7:18 pm
M3DPO
Member Since: 22 Sep 2010
Location: Notts.
Posts: 8109
Im only repeating what professionals have stated in previous posts, something to do with how the tip of the injectors operate, think of valves and timing.It can when others can't,
It will when others won't,
It goes where others don't.
8th Apr 2019 10:02 pm
Dazz360
Member Since: 03 Sep 2016
Location: West Mids Walsall
Posts: 871
I’ve read the post your referring too, I can understand a injector being damaged but the engine I don’t get it And I’m no noviceMetal auto sump & fluid change (3 hrs)
LR door puddle projectors (10 mins)
Tinted Bonnet wind deflector (10 mins)
All Intercooler pipes and Tbolts (2hrs)
3 injectors replaced so far (30mins)
Sunroof drain pipes both sides 2.5 hrs)
Rear discs, shoes,pads,callipers,flexi hoses, rigid brake line, n/s upper hub carrier bush and rear n/s upper arm (13hrs over 2 days)
8th Apr 2019 11:16 pm
defector
Member Since: 23 Feb 2009
Location: Greater Manchester
Posts: 1420
Did mystify me as well about injector hitting piston.
I've pulled connectors off the injector loads of times to see which injector may be faulty or misfiring and never had any mechanical problem as a result.
9th Apr 2019 1:25 am
gstuart
Member Since: 21 Oct 2016
Location: kent
Posts: 13657
Daft question if i may plse
Could an injector fail in such a way to pump diesel into the bore and therefore hydrolock it
Yeh i know , am getting good at asking daft questions
9th Apr 2019 1:32 am
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 4658
Correct again Gary, and very far from a daft question. Hydraulic lock can bend a con rod or perhaps even break a crank!!yµ (idµ - eAµ) ψ=mψ
9th Apr 2019 1:58 am
gstuart
Member Since: 21 Oct 2016
Location: kent
Posts: 13657
Hi buddy
Many thks
ref injectors leak back test , is that normally carried out to ensure they are not letting by , have heard about using ultrasonic machines to clean them
I did hydrolock my old company van many years ago , oh and one of my series 3s
Another reason the deepest I would ever go is up to the sills in the D3
Thks as always and this finds u well
9th Apr 2019 2:09 am
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 4658
All well thanks Gary! Never yet had the misfortune to hydraulic lock an engine. That said, had it happen to me after a few too many pints of Guinness though yµ (idµ - eAµ) ψ=mψ
9th Apr 2019 2:18 am
gstuart
Member Since: 21 Oct 2016
Location: kent
Posts: 13657
Funny how the legs decide to lock up after a few kegs
Guinness , drink of the devil
9th Apr 2019 4:22 am
jaxone
Member Since: 11 Mar 2020
Location: North Europe
Posts: 2
James, you still alive ?
Ever found the source of the noise ?
Replaced tappets or not ?
Have kinda same funny noise on my TDV6 engine and banging my head on all walls
Thanks in advance.
11th Mar 2020 6:48 pm
mtrof
Member Since: 07 Oct 2020
Location: Syresham,
Posts: 2
James1974 wrote:
The one thing I didn’t do when I done cam belt is change the rear belt wonder if it’s worth changing
I have had the same issue with my daughters Disco 3. sounds like 1 hydraulic tappet, the rear inlet tappet had no oil pressure all remaining 23 tappets were solid. I changed all 24, unfortunately the noise was the same. I replaced cam belt, tensioners, idler pulley, fuel pump drive belt and tensioner.
I also questioned cam timing and ended up loosening the starter and reset , very slightly out, no change noise is the same, I am not sure the timing change between the cams could sound like this and am going to have the injectors tested next week. I have been told with common rail you cam get damp/ pooling on the end of the injector which can cause pre ignition , and if I accelerate when the engine is cold it does sound like all injectors are noisy. ( 40 +years in motor sport, I dont normally use any power until an engine is fully warm) I did flush the engine oil and had 2 new oil filters I carefully opened one up looking for any evidence of bearing failure, nothing at all. I have done another 500 mile since with out any change the noise is the same, this is not normal and develop when my daughter was towing a trailer over 250 miles. I will up date after the injectors are tested.
13th Nov 2020 3:37 pm
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 4658
What mileage is on th car? It could be the oil pump as they do loose pressure as mileage rises.
Perhaps a pressure test might be worthile!yµ (idµ - eAµ) ψ=mψ
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