howdy all,
On my 2014 Suburban 5.3 I with 160000miles has oil pressure that when cold is at 43psi then when warm drops to 18 at idle but runs about 37 at 1800 rpms. Just removed AFM and replace lifters with Brian Tooley kit. Replaced cam bearings, timing gear/chain, sensors and trunnions. Put on melling high pressure pump Mobil 1 filter new sending unit/ filter. Does anyone have an idea why it changes so much. Thanks for any help
On my 2014 Suburban 5.3 I with 160000miles has oil pressure that when cold is at 43psi then when warm drops to 18 at idle but runs about 37 at 1800 rpms. Just removed AFM and replace lifters with Brian Tooley kit. Replaced cam bearings, timing gear/chain, sensors and trunnions. Put on melling high pressure pump Mobil 1 filter new sending unit/ filter. Does anyone have an idea why it changes so much. Thanks for any help