97Tahoe2d4x
Member
Thanks Fuel pressure regulator is next on the list...hard starts after sitting, old plugs were fouled out, and it smells rich even though I'm not getting a code.
You mentioned PO had intake gasket replaced. Do you know if injection unit was replaced at that time? I'm betting it's the old poppet valve injection and it's leaking.
If it wasn't and budget allows, you should consider upgrading the injection unit to Delphi FJ10566.
Comes complete with pressure regulator.
I did mine and it's well worth the effort. Night and day difference in idle, acceleration and better milage.
Peace.