StuckAgainSteve
Well-Known Member
If the cam is that knackered then the big-ends and mains will very likely need changing - as will the rocker shafts and arms which will have picked up swarf from the failing lobes.
How about if an exhaust valve is not opening? There would be pressure in the cylinder when the inlet opened would there not?
LR quality strikes againwell I can vouch for this,i have the same symptoms on my 4.6,so I did a compression check,160 to 170 psi on all cylinders,so i remove the rocker covers and the exhaust valve on no 6 is barely moving,lobe almost round....bugger!! and it was a new cam and followers less than 3 thousand miles ago. allegedly a genuine land rover one(well it was sealed in lr packaging anyway)hey ho engine out tomorrow.
LR quality strikes again
A new cam insufficiently lubed and incorrectly first run can be destroyed in the first five minutes.
i'm well aware,however it was lubed and run at 2500 rpm for the first 20 minutes.ahh well **** happens