V70 violently jerks

Craigm7 · Post by **Craigm7** » 14 Sep 2021, 03:17

Bare with me guys new to this.
Whilst driving my 2006 v70 2.4 d5 there was a sudden loud popping air release type noise. Stopped immediately thinking a tyre had blown, which it wasn't. When setting back off it immediately stalled. Tried again slowly, the car won't go past 10mph due to it constantly jerking jumping violently. Car ticks over fine, but when revved it fluctuates up and down. Hard revs produce grey smoke from exhaust and smoke comes from where the swirl actuator link connects to the head.
Any advice will be greatly appreciated.
Regards Craig.

Craigm7 · Post by **Craigm7** » 14 Sep 2021, 03:18

Bare with me guys new to this.
Whilst driving my 2006 d5 there was a sudden loud popping air release type noise. Stopped immediately thinking a tyre had blown, which it wasn't. When setting back off it immediately stalled. Tried again slowly, the car won't go past 10mph due to it constantly jerking jumping violently. Car ticks over fine, but when revved it fluctuates up and down. Hard revs produce grey smoke from exhaust and smoke comes from where the swirl actuator link connects to the head.
Any advice will be greatly appreciated.
Regards Craig.

Post by **abscate** » 14 Sep 2021, 05:16

We don’t get the diesels here , Craig but if it’s a turbo car I would guess an induction hose has popped off

darylrobert · Post by **darylrobert** » 14 Sep 2021, 08:02

Do you have a check engine light? ive blown a turbo hose , a piston ring and head gasket. none made the car jerk. sounds like a missfire, got to check what codes your getting.

Post by **BlackBart** » 14 Sep 2021, 09:15

Yeah, that sounds a bit like overboost and a hose blowing off. Also check the intercooler case and fittings. (Does a diesel have an intercooler?)

Post by **vtl** » 14 Sep 2021, 17:25

As other said, check turbo to OTE (over the engine) pipe, OTE to intercooler, intercooler to intake.

Post by **jonesg** » 15 Sep 2021, 00:27

jerking might be transmission shifting being affected by the boost leak, loud hissing on mine was the boost pipe coupler hose clamp coming loose. That triggered limp mode. soon followed by turbo shaft breaking. Not necessarily in that order.

darylrobert · Post by **darylrobert** » 15 Sep 2021, 06:37

Manual transmission wont jerk just no power and you would see black smoke, thats why i thought missfire which i think is white smoke?. Sorry dont know much about auto's

Post by **vtl** » 15 Sep 2021, 06:51

That happened recenetly to a diesel Volvo fellow: bolts of one of the fuel injector stripped the threads inside the head. One bolt first, the other remaining bolt didn't leave much longer. The injector flew away, causing wreckage along the way.