XF premium rod bearings
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I would think you'd be much better off picking up a used engine from a wrecked car than doing anything to repair one of these engines since they have made so many. Much less risky considering that non-factory engine builders seem to screw up so much these days. Attention to detail in the engine building craft has been lost in our just-replace-it world today.
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I would rather install a warrantied drop out as well. Not my car but told the owner that if there was a relatively simple way to pull those bearings that I'd check them, and if we found a culprit I'd replace the set.
If it's just lower the subframe and pull a pan I'll do it for him. Done quite a few XJ8s but I've never done major work on an XF and I'm not diving in without guidance, and beer.
If it's just lower the subframe and pull a pan I'll do it for him. Done quite a few XJ8s but I've never done major work on an XF and I'm not diving in without guidance, and beer.
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MarkN (02-09-2017)
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The engine makes a ton of noise from the vvt to the timing chains, injectors, waterpump, and supercharger coupler.
I thought the same on mine, but it goes away at higher rpms above 1550. Mine makes this noise, the dealer and an indi both said timing noise. I used a scope and it the passenger side vvt.
If the knock doesn't fluctuate up and down with rpms speed ... it's not a bearing issue.
I thought the same on mine, but it goes away at higher rpms above 1550. Mine makes this noise, the dealer and an indi both said timing noise. I used a scope and it the passenger side vvt.
If the knock doesn't fluctuate up and down with rpms speed ... it's not a bearing issue.
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I'd pull the pan/baffle and check each rod for play. The 5L isn't a cheap motor so I'm not sure if going with a used motor is going to be cheaper. If a rod bearing is bad then the crank could be scored. Usually slapping in a new rod bearing is only a band-aide fix and will only last for a short amount of time. The scoring on the crank would eat up the new bearing. Typically you need to pull the crank and have it polished when there is a bearing issue.
Last edited by Blackcoog; 02-09-2017 at 11:06 AM.
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