Replacing a glow plug

[rascal]

My service engine soon light came on and reported #7 glow plug and cylider #8 misfire. The mechanics told me they were old codes so they cleared them. Then later that day the light came back on.

I was going to be proactive and change out the number #7 glow plug. However, I just learned that on the 7.3 I have to take off the valve cover.

Dumb newbie question, is that valve cover gasket reusable? I should probably replace all gp's if I am going to take the valve cover(s) off. Truck just turned 110K on the odometer.

Thanks,
MG

[TheRobenator]

Yes, it is reusable. and the valve covers are very easy to take off.

[rascal]

Awesome, thanks!

[rascal]

I picked up a Haynes manual for my truck and in the pics for replacing a glow plug it shows the injectors out.

I imagine they did this just to make it easier to see the glow plug but does the injector have to come out?

Thanks,
Rascal

[rascal]

Anyone?

[TheRobenator]

I don't see why you would have to, if you do have to pull them out its easy

[rascal]

Yeah, I have read plenty about doing it. However, the Haynes manual I bought last night for reference about many things instructs you to use the galley plugs when pulling injectors to avoid the risk of hydrostatic lock. In their pics of replacing glow plugs the injectors were removed.

Thanks for your help dude!

[ABKTM]

I just did the job. I didn't pull the injectors.