90 sse change fuel filter.In the manual it says there are o rings but I couldnt find them at pert store ,do you need to go to dealer to get them.

The O rings are on the male end of the fuel fitting. See the black O ring at the end of this line section:


If your does not have one or is damaged, you can simply replace it with the correct diameter O ring available at the auto parts store

So basically I am not looking for a fuel filter o ring ,just a general oring that is proper size,also you said if damaged ,so it is possible to use existing oring if not damaged. thanks for reply and great pic.I found the thread on rusty FF lines and I hope I dont have same problem as mine are bad.I have been soaking it last couple days with wd40.

WD40 is not a very good penetrating oil. Get some PB Plaster and do the same thing by spraying generously and letting it soak for a while. Hopefully your O rings are OK to reuse. If I remember correctly, the OEM rings are orange. I'm not sure if the color is an indication of material type but if you have to replace it make sure it'* a silicone O ring. This will ensure that the gasoline doesn't damage it.

Thanks for the advice Randman1

I also have another question what is the best way to check for vaccuum leaks,I must have one and cant find it.

A vacuum gauge is the best way to check for leaks. They are available at the auto parts store for abour $20 and look like this:

How do you use it?

The kit comes with an assortment of T shaped fittings and small lengths of vacuum line of varying diameters . You would disconnect a line on your car at a factory connection, insert a T and complete the path with one of the small lengths of line. Start the car and monitor the vacuum. The pic is the gauge and reading for my climate control in the 90. We started the car and let it idle for a couple of seconds then shut it down. It held this reading for 45 minutes which meant that there were no leaks in the system.

There'* a bit more to it though. In several places along the vacuum system there are check valves. The check valves allow vacuum in one direction but not in the other. Your readings will differ depending on which side of the check valve you are on and wether the engine is running. This is a good way to test the check valves too.