New 1994 Q45 owner: coolant system pressure and rough idle

[Ccdiesel]

Hey guys,

New to the forum and I just bought a 94 q45a with 90k miles. Has some issues I am trying to figure out.

1. Rough idle/ miss which I think is two injectors but I need to confirm with a volt meter

2. No smoke at idle but the radiator cap is pressurized after starting and I am thinking its the headgasket. No pressure in the coolant reservoir though. I started it, shut it off and it will push out some coolant when I crack the radiator cap.

Anything else I should be looking for when it runs rough like that?

[Ccdiesel]

also there is no water in the oil. No coolant leaks whatsoever. Just runs rough, which with the bad injectors makes it hard to diagnose.

[OwnerCS]

Welcome to NICO! Where are you located? We may have a member near you to help diagnose the issue?

Have you visited http://www.q45.org? There are several good articles there to help diagnose the issue.

To download your car's Field Service Manual (FSM) visit this link:
http://www.nicoclub.com/FSM/

[Ccdiesel]

I looked through the site. Nothing that really pointed out whether or not the pressure I was getting is a definite sign of a failure. It may not be. Ill have to drive it to see what other symptoms it has if any