Power n boost lost, 1.9 diesel 159 Ti
Hey everyone. Been a few months since I've posted. To busy enjoying driving.
Had to call out the RAC earlier as I broke down unfortunately. Wife mainly drives the car, but she's been saying the last two weeks that it's been starting alittle rough in the mornings. I just put it down to colder weather or glow plugs possible needing replaced, which maybe the case anyway.
She had drove the car home from work today, about 6-7 miles, no problems. Car parked at house half hour then I jumped in to get kids from school 1.5mile trip. Once kids collected, started up again n headed another 1.5miles to supermarket. Did shopping, all good.
Once back at the car and I started the engine, it hesitated, then had tapping noise when it started, lasting upto a minute and engine felt like it was choking on idle. Once tapping noise was gone, but engine still felt rough, I put it into gear and tried moving forward. Usually just lifting clutch would achieve this, but I had to bring the revs about 2500rpm n higher to get any drive. When it stalled, which was very easy to do, it struggled to restart, but it did, no tapping but same response problems.
Resorted to call the RAC.
As I was waiting, I also noticed that with any load on the engine it was prone to stall. As it was running idle, if I turned the steering wheel it would stall unless I put alittle throttle on.
RAC came, checked what he could do with my knowledge given, told him egr had been cleaned few weeks ago with particual blanking plate inserted. DPF cleaner had been added also. The longer he was there the engine seemed to run better on idle. So he asked me to make the short journey home to test it and he would follow. There was very little drive and no boost. I could not raise the power enough to get 3rd gear.
There is no engine management lights on, the DPF warning light hasn't come on, which it has before when it was blocked months ago which I sorted then. RAC ran a diagnostic which brought up no faults. The oil change warning is the oil thing that has displayed on the dash within the last few weeks asking for an 'oil change due'.
RAC suggested a oil flush and oil n filter change which I can do myself asap. He mentioned the performance drop could be the egr or more likely a tappet (hydrochloric valve) being sticky which would b the cause of the noise I heard. If it is a tappet, how can I be sure, can they be changed by myself if I'm an average DIYer, where can I by them or is it a garage job? Can anyone post info on this as a how to?
Also is there anything else I can check that could be at fault? Swirl valves or sumthing comes to mind that iv read before. Is that the same thing as a tappet?
Pain in the bum. Thanks for you help, sorry for the long winded explanation.