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Home > Technical > Help! Sounds like the cam belt has snapped |
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chicken george Member Since: 06 Dec 2007 Location: N. Yorks Posts: 13283 |
there is a known camshaft problem, but I think it affects the drive to the fuel pump not the belt
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20th Nov 2012 8:04 pm |
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offroadit Member Since: 20 Nov 2012 Location: Cornwall UK Posts: 9 |
Awesome, cheers fella.
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20th Nov 2012 8:08 pm |
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offroadit Member Since: 20 Nov 2012 Location: Cornwall UK Posts: 9 |
Update. both cams are fine, belt is fine, checked the the cams at both ends just to be sure, with the top plastic cover removed from the rocker and both the vac & fuel pump off, the cams rotate as usual!
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21st Nov 2012 2:48 pm |
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Mona Geeza Member Since: 22 May 2010 Location: Devon Posts: 1293 |
If the oil warning light is on then youve got no pressure, no pressure means the hydraulic tappets wont have an oil feed so wont work properly.
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21st Nov 2012 2:57 pm |
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offroadit Member Since: 20 Nov 2012 Location: Cornwall UK Posts: 9 |
Turned engine over with cover removed, have plenty of oil pressure now and the oil light goes off when cranking......I think originally the chap who changed the oil filter may have disturbed the plastic feed pipe that sits below the actual paper gasket.....thats why the oil light stayed on and then eventually the engine cut out.
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21st Nov 2012 3:13 pm |
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Mona Geeza Member Since: 22 May 2010 Location: Devon Posts: 1293 |
If youve now got full oil pressure back the tappets should self prime. |
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21st Nov 2012 3:46 pm |
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oldgeezer Member Since: 09 Apr 2011 Location: Wiltshire Posts: 1302 |
Right step back !
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21st Nov 2012 9:02 pm |
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offroadit Member Since: 20 Nov 2012 Location: Cornwall UK Posts: 9 |
Cheers for that, will try in the morning.
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21st Nov 2012 9:42 pm |
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npinks Member Since: 28 Jun 2007 Location: Ls25 Posts: 20090 |
I thought you should never attempt to tow a 4x4 |
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21st Nov 2012 9:44 pm |
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michal969 Member Since: 01 Sep 2012 Location: Semily Posts: 185 |
If the lifters got empty and not opening valves any more there should not be any more damage to them.If they expanded and keeps the valves always open there is probably damage to valves.If you have valve cover disassembled try to push the lifters with a screwdriver - if you are able to push them easily there is no oil inside and the lifters are not opening valves. |
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21st Nov 2012 9:53 pm |
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alex_pescaru Member Since: 12 Mar 2009 Location: RO Posts: 4642 |
From what I've know, the valve's travel/cam's lobe is much higher than the difference between the lifter pressed and relaxed (lifter's travel). So the valve's lift will be much smaller when the lifter is pressed (without oil), but it'll exists.
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22nd Nov 2012 12:05 am |
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michal969 Member Since: 01 Sep 2012 Location: Semily Posts: 185 |
You are right Alex but the problem is in the valve timing - with empty lifters the intake valve opens too late (and with small lift) and closing too soon so only small amout of air gets into cylinder resulting in low compresion and no start.Towing should help as you get more cranking speed...but try it on your own risk |
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22nd Nov 2012 10:07 am |
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iain cooper Member Since: 27 Aug 2007 Location: north of Glasgow Posts: 1989 |
yes certainly sounds like it was the oil service that caused the problem. was it a Landrover dealer/specialist that carried out the service ? Iain |
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22nd Nov 2012 10:26 am |
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chicken george Member Since: 06 Dec 2007 Location: N. Yorks Posts: 13283 |
never tow an auto. esp if its in park. there is often a way of putting the gearbox into 'tow mode', or the drive shaft can be removed from rear and the front lifted. not sure whether this works on fl2 does the haldex need oil pressure? At work At home "I can't always believe facts I read on the web" - Charles Dickens winner by default of the tractor vs caravan race |
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22nd Nov 2012 11:50 am |
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