1.6HDI stammering under acceleration (but only randomly)
Now, I know diesels don't technically "misfire" - but that's how it feels. Here's whats been happening:
I have PP2000 here so can test out specifics if you can guide me the right way. Its an old version, but works ok. I've ordered a new fuel filter, just in case its in need of changing.
Car details:
2006 407 1.6HDI with 113k on the clocks.
DPF is not clogged (% pressure is healthy), new Eloys fluid done last year
Any pointers gratefully received! :thumb:The car has been pretty flawless over my 7 years of ownership and I don't want to have to get rid unless really forced to.
Now, I know diesels don't technically "misfire" - but that's how it feels. Here's whats been happening:
- Few weeks ago - accelerating gently, the car dropped power instantly, then straight back on the power. It was like a momentary loss of all power for a split second. When it happens on the throttle, it gives a fair "thump" as the engine cuts and kicks back in.
- Then... nothing. Flawless.
- Last week, motorway driving after about 2 weeks trouble free, it gave a "bump" 3 times on the way home. These all happened on flat throttle at 60-70mph. Asides from those split seconds, the car is perfect. Revs out well, pulls well.
- Then, 3 days ago, went to start the car in the morning and it took 2 cranks to fire.
- 2 days ago, car wouldn't start after sitting. I used the hand primer bulb, it fired up no problem. I could hear air in the primer. It had lost pressure.
- Mechanic looked the car over and sees no problem. No visible leaks. My injectors were all flow tested last year with new seals.
- Today, it wouldn't start on the key but with 3 squeezes of the primer bulb, started no problem. I drove it for about 10 miles with a stop at the shops. No problem - but I'm sure that tomorrow morning, it'll need a prime to start.
I have PP2000 here so can test out specifics if you can guide me the right way. Its an old version, but works ok. I've ordered a new fuel filter, just in case its in need of changing.
Car details:
2006 407 1.6HDI with 113k on the clocks.
DPF is not clogged (% pressure is healthy), new Eloys fluid done last year
Any pointers gratefully received! :thumb:The car has been pretty flawless over my 7 years of ownership and I don't want to have to get rid unless really forced to.