1.6hdi Engine failure

malc4 · Unread post by **malc4** » 16 Dec 2025, 16:50

My friend unfortutately seems to have had a major engine failure on her 1.6hdi (DV6C 9HR ~120k)
Loud knocking from the bottom end.
I suspect it may have had dpf delete- tailpipe sooty.
Any ideas about the cause or how to avoid same happening with my 1.6hdi engine with similar mileage?
malc

malc4 · Unread post by **malc4** » 16 Dec 2025, 18:20

recent history on car include leaking injector seals - a 'mushroomed' injector tip (#4) had to visit garage for that but other stuff was botched - sawn off injector bolts which involved leaking seals again and a fuel pressure breakdown from missing screw on fuel filter housing. now i prefer to do stuff myself..

managed to get her an emergency replacement -a high mileage well cared for looking Golf 2.0Tdi from 2008- fingers crossed

Unread post by **Paul-R** » 16 Dec 2025, 18:32

There's a lot there to sort. Much as I hate to say it, if the Golf is a good one I would stay with that. Time to get shut of the C4 GP (I'm presuming it's the one in your information on the left)?

malc4 · Unread post by **malc4** » 16 Dec 2025, 19:03

have recently had injector failure on my C4 (common issue on that engine it seems) so will be extracting the old ones from car before scrap.. anything else of use i wonder..
i'm hoping the older 2.0 Tdi 140 ps engine will be more reliable for her- no dpf for starters? much depends on maintenance historyi guess..

malc4 · Unread post by **malc4** » 16 Dec 2025, 19:23

i managed to read the injector contributions as i thought it maybe extreme diesel knock. #1, 2, 4 all around 0.6, #3 about 1.7. nearly out of range?

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1.6hdi Engine failure

1.6hdi Engine failure

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