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Thanks for the invite Gerard, been chilling out, its Sunday do you have a life?
Thanks for the great info, I've printed @tw2005 response for test procedure.I've asked for a parts list from the dealer of which glowplugs + control module were fitted, but I'm going to take a shot at @nzenigma reply and assume inferior glowplugs for now, as I don't have a multimeter to hand so I can't test impedence or continuity.I did, however, just cycle the glowplugs 4 times and the engine started perfectly and the throttle response was gnat's wotsit fine. I used to work at a diesel specialist many years ago and learnt a few things, one of those things told me constantly that this is still a glowplug issue, but I never thought anything of it. The parts were replaced, so I was naive enough to just assume they were the right parts.Will let the engine cool down and repeat procedure to confirm.The dealer definitely replaced 3 injectors with new, as I watched the mechanic do it. The dealer's owner may be out of his depth here, but he's a good guy. His mechanic, however, obviously keeps overlooking something.The 4th injector, not sure about that one, it may have been replaced before they even got hold of the car. But, it's definitely newer than the manky old OEM ones that were removed for the new ones.
@courtartanis and thanks for doing the nightwatch Gerard This is my 5am thought bubble > head gasket.Has anyone done a coolant pressure test? If you have a small leak into one or two cylinders you will get the symptoms displayed in your video.1. fault is present after cool down2. injectors changed3. Glows changed4. fault is still present .Now if we assume that the voltage at the glow plugs was checked and is correct we can say that there is only a remote chance that a good quality, new component is also faulty. Recheck the circuit and voltage.Then I would be looking elsewhere .A coolant leak , if it exists, could be due to a crack or corrosion in the head or gasket failure.Even if the pressure test does not reveal a small leak, I would like to look inside.Without starting the motor pull the injectors out and use a bore-scope to look for moistureBest I have at this stage, good luck.
What about fuel system? Or am I ghosthunting there...
Mate, I think your guys have one oar in the water and are stuck in the glow plug pond. Think laterally. Are the UK Summer and Autumn temperatures really as bad as we like to believe them to be down here?Essentially, we can start a crdi without needing glow plugs during the day. First start on Winter mornings, it is more difficult but not impossible.Your video appears to demonstrate 2 or 3 functioning cylinders with the 4th finally becoming fully operational.Have they considered the head leak I proposed?
Quote from: nzenigma on August 29, 2018, 22:56:20Mate, I think your guys have one oar in the water and are stuck in the glow plug pond. Think laterally. Are the UK Summer and Autumn temperatures really as bad as we like to believe them to be down here?Essentially, we can start a crdi without needing glow plugs during the day. First start on Winter mornings, it is more difficult but not impossible.Your video appears to demonstrate 2 or 3 functioning cylinders with the 4th finally becoming fully operational.Have they considered the head leak I proposed?I haven't mentioned it, because why would the engine start perfectly with an extra few seconds of glow if it had a head leak? Not only that, but I've had the car over 6 weeks now and the coolant level hasn't changed a hair lol.Unless you're suggesting a really really REALLY small head leak, which wouldn't cause a cylinder to misfire. I can leave the engine to cool for say, 4 or 5 hours, and the fault will appear... but if enough coolant is leaking into a cylinder in that time I'd notice a drop in coolant over time surely?I appreciate the suggestion, but it seems like such a long shot I'm sceptical of it..
If I start the engine as soon as the GP light switches off, I get the problem in the video.If I wait an extra 2-3 seconds after the GP light switches off, then start the engine, I get a perfect start with no smoke and no rough idle.
It runs rough for about 20-30 seconds and then the smoke and rough idle clears, however often hesitates and bucks for a few minutes when I start driving, and then runs normally until it's left to cool down again.
snipI did, however, just cycle the glowplugs 4 times and the engine started perfectly and the throttle response was gnat's wotsit fine. The dealer definitely replaced 3 injectors with new, as I watched the mechanic do it.The 4th injector, not sure about that one, it may have been replaced before they even got hold of the car. But, it's definitely newer than the manky old OEM ones that were removed for the new ones.
Update:Glow light does switch off pretty quickly (1-2 secs), which is not enough for a clean start, but leaving ignition in ON position for an extended time after the light goes off (without having to cycle) is enough to get a clean start.