I bought 1996 850 T5 ex-police expecting it to have been serviced regular as clockwork, thus being well maintained and in good condition.
But since i got the car it has had a terrible hot start problem and now has a ticking noise. Local garage has ruled out cambelt,waterpump, tensioners/rollers,power steering and alternator faults.
He did comment on several rocker bolts that are not standard so advised me to do a compression check, my tester isnt accurate but is consistent and here is what I found
1)9.3bar 2)6.6bar 3)6.6bar 4)9bar 5)8bar
So I presume from this that I have either a head fault or headgasket fault between 2 and 3.
But before I replace the headgasket and test the head/skim I would rather find out what this noise is(dont want to waste money)
Volvo says that it is a bent conrod(but tried to sell me an engine privately)
Local garage says it is a hydraulic tappet(but he is a BMW specialist).
I says I'm not sure.
The noise is apparent at tickover but gets worse but it isnt consistent with the revs.
I noticed that at a steady 2000rpm,no matter what gear, the noise was intermittent but it was speeding up and slowing down even though the rpm was steady.
Can somebody help me please?
Many Thanks
Dale
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