Hi,
I have what I suspect is a bearing noise coming from the front camshaft bearing at idle. When hot at idle I get 2 out of 8 oil pressure on the dash gauge. Full pressure seems to be about 6.5 so 2 when hot on a 300,000km engine doesn't seem too bad. Any engine revs and oil pressure goes back to 6s when hot. But I do have the bearing noise. Now I believe that the 4ZE1 2.6L engine doesn't have replicable bearing shells for the camshaft. Is that correct? In which case I assume I'm up for a new head. Is that correct? Will I also need to replace the camshaft or just have it reground?
Thanks in advance for your help and advice.
Cheers