Recent Topics
A4 2_5 TDI 2002
KEITH DA COSTA
10/12/09 at 09:16
Escort 1-8 TDI 2000
KEITH DA COSTA
07/12/09 at 09:21
Freelander II
KEITH DA COSTA
11/11/09 at 15:53
Nissan Primera 2_2dCi (2184cc) 2002
KEITH DA COSTA
11/11/09 at 09:59
Hyundai Tucson 2_0 CRDI 2004
KEITH DA COSTA
06/11/09 at 09:14
FRIDAY, 6 NOVEMBER 2009
Hyundai Tucson 2_0 CRDI 2004
Hello.
Firstly I would like to thank you for your very informative 'tips & problems' page, unfortunately my own experience is not covered there.
I understand it is impossible for you to make a definite diagnosis without seeing the car, but I am hoping your experience may be able to point me in the right direction. I am in Portugal, so bringing the car to you is a bit impractical. I do hope you post abroad!
A friend's BMW320D recently died (expensively), apparently two piston crowns have melted. Which got me to thinking about my own car & the 'prevention is better than cure' approach.
Mine is a 2004 Hyundai Tucson 2.0 CRDi, and it has done almost 100,000 km (60,000 miles). It starts & runs perfectly, I have never seen unexpected amounts of smoke, and at almost 30MPG I have no issues with fuel consumption. What I am experiencing is a slight 'shudder', as if one cylinder isn't firing correctly, but this only happens at about 1900 ~1950 RPM, and is only noticeable under moderate load, i.e. normal acceleration on, say, a slight incline. I recently added some 'Wynns' fuel system cleaner, which I am sure reduced the effect slightly, but only for the duration of that tankful of fuel. Cheaper diesel 'treatments' have no effect. Filters etc. get renewed as per service intervals.
Sadly our nearest Hyundai dealer is the most awkward business to have dealings with (they never answer their phones & they don't phone you when it's ready- and it's 30km away!), and most local garages are still happier dealing with Peugeot 504 technology.
I am worried that my engine may suffer the same fate as my friend's BMW if the injector(s) are spraying unevenly, but is this likely to be the cause of the shudder if only apparent at just under 2000 RPM?
Finally, a local petrol station has started selling bio-diesel; 15% bio-fuel (whatever that is). Is it to be trusted/recommended/avoided?
Thank you for your time & patience, I look forward to your opinion.
Kindest regards, Trevor Morgan.
Posted by KEITH DA COSTA at 09:14 | 2 COMMENTS
Comments
Thursday, 31 December 2009, george wrote:
Leak off/Return Pipe connectors.
Big thank you for suppling the above item, this was the only sight I could find that supplied this part as a single item, the Merc stealer's only do this in kit form, also stayed open & waited for my son to collect on NEW YEARS EVE although the part was only a couple of quid. So once again THANK YOU five star rating*****
Posted at: 18:47
Friday, 6 November 2009, Keith Da Costa wrote:
Dear Trevor,
There are many things that can influence the running of your vehicle, as we specialize in the injectors I can only tell you, from my experience, the problems that you could expect from faulty injectors.
The first thing that goes wrong with these injectors is that they develop internal leakage problems allowing too much fuel to be returned to the tank hence causing a problem with rail pressure. The normal symptoms is hard starting and erratic idling – not your problem, you can check this by going to http://www.uniteddiesel.co.uk/tips_docs/Bosch%20common%20rail%20diesel%20injectors%20checking%20back%20leakage.pdf
Next if there is a problem with the nozzles wearing and causing the incorrect start of injection, the symptoms again are hard starting and erratic idling.
It is not normal to have an injector causing a over fuelling issue especially only at a certain RPM, you must bear in mind that the injector will only deliver fuel as instructed by the ECU so perhaps there is some other influence causing the ECU to deliver an uneven amount of fuel.
Something simple to check and would have a influence on the running is if one of you injectors is suffering from blow by, you can check this by making up a solution of soapy water and squirting this around the injectors whilst the engine is running to see that you do not have an injector leaking. You can find out more at http://www.uniteddiesel.co.uk/tips_docs/Bosch%20common%20rail%20diesel%20injectors%20blow-by.pdf
So at this point I do not believe that you have an injector fault, other things to check would be the EGR, perhaps clean this out, insure that the fuel filter and air filters have been replaced, I am not sure if you have both cam and crank sensors but perhaps check that these are ok.
I hope that this has helped, I do not believe that you will suffer the same fate as you friend but if the vehicles starts to idle and run uneven producing smoke then it would be time to start worrying.
Regards, Keith
Posted at: 09:58
Post a Comment
You must be registered to post a comment, please Login or Register