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Mr diesel man - a little history for you. My little Citroen diesel has been getting a little hard to start for a couple of months, I knew I had a battery on it's way out so was blaming that but stubbornly and stupidly not doing anything about it. Then 2 weeks ago on a very very cold morning I went out to the car and spun her over and it was hard to start as it had been the previous couple of months so no alarm bells went off. I threw my bags in the back and drove 10 metres down the driveway before going on the road but when I pushed the clutch in the little bugger stalled. I tried to start it again but my "on the way out" battery foiled me and left me completely. I bit the bullet and called the AA to come give me a jumpstart and resolved to buy a brand new battery straight away. AA turned up, jump cables on and I went crank a crank a crank - but no brum. Double glowed it and crank a crank a but zilch still. Chucked some ether down the tube and crank a crank a brum a sputter sputter sputter till finally a brum brum BRUM! Success! High 5'ed the AA man and drove down the road to purchase a brand new battery with all the CCA's in the world. The rest of the weekend of driving it was OK but it seemed to be even more of a pig to start when it was cold than it had ever been. It was almost like the glow plugs had totally given up the ghost when the AA turned up - but at least I had the CCA to get it to crank long enough to fire. Now because it's been a real pig to start and I suspect the glow plugs then I decided I'm going to change those. I've been trying to find time but have been busy pretty much non-stop with work and property stuff and when I have had free time it's been out of town for the weekends. The last 2 days it began noticeably surging over 3/4 throttle or more but not bad enough to warrant a look under the bonnet and thought I'd take a geeze when smashing in glow plugs soon. TLDR? - this paragraph is the crux of the issue This morning was no better or worse to start than as of late but still a cunt, however when I hit the road it straight away started surging worse than ever and to top it off it wanted to stall every time I put the clutch in. I managed to keep the revs up with a combination of heel/toe and coming to a full stop with the handbrake. But then when the engine warmed up she was all good other than the minor surging. So I now have symptoms of hard starting, surging all the time and stalling when cold. Does this sound like water in the fuel or an air ingestion into the fuel lines? FWIW - the worst times have seemingly coincided when the weather has been really shitty with borderline frost. I'm thinking I'll get some fuel conditioner and water mixer to throw in the tank and also replace the fuel filter but would like an opinion from one of you diesel mechanic types out there before I go throwing money at it in case it is something common and I should be looking elsewhere. It's confusing because the moment it all started going really wrong was when the AA man threw some ether down it's throat. Just so I don't seem like a completely lazy asshole, I have just been out at lunchtime and looked under the bonnet but couldn't see any sign of a fuel leak or any obvious sites of air ingestion and when I opened the water drain it looked like diesel only coming out. Cheers heaps for any help or guidance. KK