Signs of diesel injectors leaking.
Discussion
I've got a 2007 180000 mile Hyundai Tucson with the 2litre diesel engine.
Its always been a bit sluggish to pull from low revs (they all do that) but lately its been getting worse, sometimes needing a bit of clutch slip to get the revs up before it will pull away.
Also, after it's been sitting any more than a few hours, whilst it will start easily enough, you have to sit with the accelerator to the floor to clear vast clouds of unburnt diesel before the revs will start to rise at all.
Once it has started and gone through this rigmarole, it runs fine, pulling remarkably well and smoothly (for a sweety money Korean shed) and starts fine every time you stop as long as its just stopped for a short while. No problems or codes on diagnostic machines, no warning lights, and no visible signs in the engine bay.
My personal (extremely amateur) diagnosis is that one or more of the injectors is leaking fuel through into the combustion chambers when the engine is stopped which needs burning off/ blasting through when restarted.
Before I go out and spend more on replacement injectors than it's really worth, does any one else have any suggestions?
Its always been a bit sluggish to pull from low revs (they all do that) but lately its been getting worse, sometimes needing a bit of clutch slip to get the revs up before it will pull away.
Also, after it's been sitting any more than a few hours, whilst it will start easily enough, you have to sit with the accelerator to the floor to clear vast clouds of unburnt diesel before the revs will start to rise at all.
Once it has started and gone through this rigmarole, it runs fine, pulling remarkably well and smoothly (for a sweety money Korean shed) and starts fine every time you stop as long as its just stopped for a short while. No problems or codes on diagnostic machines, no warning lights, and no visible signs in the engine bay.
My personal (extremely amateur) diagnosis is that one or more of the injectors is leaking fuel through into the combustion chambers when the engine is stopped which needs burning off/ blasting through when restarted.
Before I go out and spend more on replacement injectors than it's really worth, does any one else have any suggestions?
E-bmw said:
You could always pull the injectors in turn and run them into a bottle to see what the spray pattern looks like & you could hopefully see if they are draining down when switched off.
This is a good idea. If you are still not sure most diesel specialists charge around £15.00 per injector to do a full test. Gassing Station | Home Mechanics | Top of Page | What's New | My Stuff