Omega Owners Forum
Chat Area => General Car Chat => Topic started by: Del Boy on 21 February 2012, 17:52:30
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Right one of my beemers has a very very poor startup from stone cold, I always leave it for the glow plugs to warm, however when it starts it's judders around like an old tractor, feels like it is heavily misfiring. After about 10 seconds it clears and runs absolutely perfect. Any ideas what this could be as it really is driving me mental now to be honest. It's a 231 BHP 3.0 diesel, I've had to ask on here because no one else seems to want to give me answer.
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this may give some idea
http://www.bmwland.co.uk/forums/viewtopic.php?f=24&t=115318 (http://www.bmwland.co.uk/forums/viewtopic.php?f=24&t=115318)
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Thought it would be an injector problem >:(.
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Thought it would be an injector problem >:( .
3 possibilities, glow plugs , glow plugs controller , injectors.. :-\
I just remembered how much I spend for a hot starting issue on a normal fuel car >:(
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Always starts first time, it's just the initial startup in hitch it really really feels poorly.
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Always starts first time, it's just the initial startup in hitch it really really feels poorly.
probably your car is newish.. if you wait it will get worse and easily solve the problem ;D :-\
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Always starts first time, it's just the initial startup in hitch it really really feels poorly.
probably your car is newish.. if you wait it will get worse and easily solve the problem ;D :-\
It's a shame I haven't caught it on video yet, I'll try in the morning as its terrible.
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This is pretty much what it does
http://www.youtube.com/watch?v=5zPk2Wg0Vf8&feature=youtube_gdata_player
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This is pretty much what it does
http://www.youtube.com/watch?v=5zPk2Wg0Vf8&feature=youtube_gdata_player (http://www.youtube.com/watch?v=5zPk2Wg0Vf8&feature=youtube_gdata_player)
this car is hunting.. so I think its different than the thread I posted above.. ???
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my miggy was doing the same when it has a faulty vacuum solenoid.. but yours is diesel :-\
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See I'm thinking either rail pressure sensor, or glow plugs, or the glow plug control unit. I should point out the car pulls fantastically well an is very very good on fuel, however, it does if you give it some properly end up in limp mode.
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I suspect a leaky injector..........if it was rail pressure then it would cause heavy acceleration issues.
If it was glow plugs it would just not fire, a modern diesel will pretty much always combust once a single cylinder fires and the crank speed is raised above the starter motor speed.
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I suspect a leaky injector..........if it was rail pressure then it would cause heavy acceleration issues.
If it was glow plugs it would just not fire, a modern diesel will pretty much always combust once a single cylinder fires and the crank speed is raised above the starter motor speed.
Probably is :(. I'll have to get it on a smooth running test and pinpoint the injector with the fault.
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Very lumpy idle on hot now, gave it a bootful to try and it broke down. Fantastic >:(
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Took it to my mechanic, got him to give it a good thrashing, absolutely stunk of diesel, anyway, popped the engine cover off and the leak off pipe is snapped, and squirting fuel all up the joint. New part ordered, ready to be fitted tomorrow.
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New leak off pipe was fitted today, started it up applied slight throttle pipe split straight away. Any ideas?
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Just a guess but would a clogged or faulty injector cause enough of a build up of pressure in the return circuit to split the pipe?
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Just a guess but would a clogged or faulty injector cause enough of a build up of pressure in the return circuit to split the pipe?
Yep, it would. I'm unsure of what to do really, any diesel technicians can't look until next week :-\.
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If the leak off pipes are splitting that quickly it would seem that a injector has way to much return flow that is causing excess pressure on the return system.
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If the leak off pipes are splitting that quickly it would seem that a injector has way to much return flow that is causing excess pressure on the return system.
Or there is a blockage further up the system that's causing the return pipework to pressurise.
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If the leak off pipes are splitting that quickly it would seem that a injector has way to much return flow that is causing excess pressure on the return system.
Or there is a blockage further up the system that's causing the return pipework to pressurise.
Looking at it today it hasn't split the pipe in the same place, it runs fine under light load, any heavy load and it runs like sh1te.
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Does the return go to the filter or the tank (usualy the filter on modern systems)
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Does the return go to the filter or the tank (usualy the filter on modern systems)
I'm not sure to be honest :-\. I've got plenty of images of the common rail system, injection system etc if that's of any help?
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I suspect you may have a goosed injector, this would result in the mid pressure system being more stressed and hence the weakest part of the chain would go......e.g. a bleed off pipe.
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I suspect you may have a goosed injector, this would result in the mid pressure system being more stressed and hence the weakest part of the chain would go......e.g. a bleed off pipe.
That's what everyone is saying to be honest, hopefully it's right and not more than one :-\
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Well BMW say there's no injector problem which to be honest I think they're talking utter bullshit, it does this at startup:
http://www.youtube.com/watch?v=bAl7amv6XM8&list=UUCEIquOpNKTJB0SLJ976LNQ&index=1&feature=plcp