|
|
|
Oct 30, 2020 15:34:22 GMT
|
|
Noticed this over the last few days.
It's (as mentioned before) shocking at cold start even if the motor has been turned off only a few minutes.
Sometimes it starts fine and goes well.
Today I've noticed when the motor is under strain mid way there is a tappet type of noise, goes if you gear down or power on.
I'm guessing this is still MAF issues??
Any help appreciated, also what oil is recommended for the 2l diesel Street
|
| |
|
|
|
|
|
|
|
Oct 30, 2020 20:24:49 GMT
|
|
That has all the symptoms of worn out injectors.
|
| |
1988 Mercedes w124 superturbo diesel 508hp
1996 Mercedes s124 e300 diesel wagon
1990 BMW E30 V8 M60 powered!
1999 BMW E46 323ci project car
|
|
|
|
|
|
|
That has all the symptoms of worn out injectors. It's smoking a lot too |
| |
|
|
|
|
|
Oct 31, 2020 12:39:08 GMT
|
|
Yep, I'd say injectors too.
|
| |
|
|
|
|
|
|
|
|
Chucked a bottle of DPF cleaner in with £20 of fuel last night.
The mud range noise has gone but coughing out some rite soot after 2k revs
|
| |
|
|
|
|
ChasR
RR Helper
motivation
Posts: 10,191
Club RR Member Number: 170
|
|
|
|
|
Another one for suspecting injectors. IIRC, it almost sounds like the engine is knocking.
|
| |
|
|
|
|
|
|
|
had this with a vw lt, got the injectors cleaned and the knock got louder, then the oil pressure disappeared... found a blue cap on number 1 rod  but yes, I'd start with some injectors, I'm guessing this is a Commonrail L series being in a streetwise as that's quite late. |
| |
Last Edit: Nov 2, 2020 20:35:28 GMT by welshpug
|
|
stealthstylz
Club Retro Rides Member
Posts: 14,832
Club RR Member Number: 174
|
|
|
|
|
Definitely get the injectors out and tested/cleaned if they can be before it does more damage. Majority of diesel engines I repair have blown up because of injector faults.
|
| |
|
|
|
|
|
|
|
|
So swapped injectors over yesterday and it's doing exactly the same
|
| |
|
|
|
|
|
|
|
|
|
|
with new/refurbished ones?
|
| |
|
|
|
|
|
|
|
with new/refurbished ones? No second hand |
| |
|
|
|
|
|
|
|
|
Used injectors wont help you as they will be just as worn, you may also need to re-code them to your ecu. Now you have your old ones out send them for testing/refurb.
|
| |
1988 Mercedes w124 superturbo diesel 508hp
1996 Mercedes s124 e300 diesel wagon
1990 BMW E30 V8 M60 powered!
1999 BMW E46 323ci project car
|
|
|
|
|
|
|
|
I've not read your previous post, but my dad had very similar issues on his 45, after much messing about with injectors he checked egr valve, found it sticking open and just generally not working. I know he bought a new one and the smoke/tapping went away. Apparently it causes smoke due to the turbo 'boost' leaking off down the exhaust through egr rather than going into engine, the ecu doesn't know this so fuels according to what it thinks its boosting at, therefore overfuelling causing smoke/diesel rattle.
|
| |
|
|
|
|
|
|
|
I removed this sensor last night abd it ran much better  |
| |
|
|
|
|
|
|
|
|
Why is there gaffa tape around the inlet hose?
|
| |
1988 Mercedes w124 superturbo diesel 508hp
1996 Mercedes s124 e300 diesel wagon
1990 BMW E30 V8 M60 powered!
1999 BMW E46 323ci project car
|
|
|
|
|
|
|
Why is there gaffa tape around the inlet hose? Been like it since I got it |
| |
|
|
|
|
|
|
|
Why is there gaffa tape around the inlet hose? Been like it since I got it If that's a leak you need to fix that before anything else. |
| |
1988 Mercedes w124 superturbo diesel 508hp
1996 Mercedes s124 e300 diesel wagon
1990 BMW E30 V8 M60 powered!
1999 BMW E46 323ci project car
|
|
|
|
|
|
|
|
Is that the IAT sensor you've disconnected?
I wonder if you actually do have a un-metered air problem caused by a leak in the inlet hose?
My logic being that if it runs a bit better wuth the IAT disconnected, perhaps the ECU is acting as if the inlet air is very cold and increasing fuel. This would compensate for the excess air and improve combustion.
If it was my car, I'd replace that dodgy inlet hose and re-connect the IAT. If it's no better, then I'd do a leak-off test on the injectors and get an ODB reader on it to check for codes/fuel pressure/fuel trims.
|
| |
|
|
|
|
|
|
|
Is that the IAT sensor you've disconnected? I wonder if you actually do have a un-metered air problem caused by a leak in the inlet hose? My logic being that if it runs a bit better wuth the IAT disconnected, perhaps the ECU is acting as if the inlet air is very cold and increasing fuel. This would compensate for the excess air and improve combustion. If it was my car, I'd replace that dodgy inlet hose and re-connect the IAT. If it's no better, then I'd do a leak-off test on the injectors and get an ODB reader on it to check for codes/fuel pressure/fuel trims. Hose is the next thing on the list |
| |
|
|
|
|
