Cadillac Repair Questions? Ask a Mechanic for Answers ASAP
Hello I will help you with your question,
Is it a little rough running after starting?
Ok, there is a pressure regulator that does leak. The upper intake has to be removed and the regulator is on the side of the fuel injection body. A clean patch will be under the pressure regulator if it is leaking.
It is possible for the check valve in the pump to be leaking as well so you need to install a fuel pressure gauge to the fuel test port and first see if the pressure bleeds off with the key off then block the return line by capping it at the joint above the fuel filter and see if the pressure still bleeds off. If the pressure falls with the return blocked the problem is the pump not the regulator. It may be leaking injectors but this is not common. The regulator and the pump are common problems.
Let me know how I Can help you with this
Thanks I have taken it to a mechanic in the past to no avail so appreciate your help,
I will give them your guidance. any idea on the cost of the regulator?
The regulator is about $60 but to install it is 2 hours labor so it would not be inexpensive if it was not the regulator. I would have them test first.
Let me know what I can do to help you