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P0305 - Cylinder 5 Misfire

One scenario could be that you had a leaking injector, fouled a plug, washed out a cylinder damaging the cylinder wall and/or rings. It also could have been a leaking valve guide, fouling a plug, unburned fuel washing out the cylinder. It could also have been an ignition problem allow unburned fuel to wash out the cylinder.

At this point, some effort can be spent trying to see if that cylinder might restore itself. It isn't likely, but possible. Make sure the injector is working properly, the ignition is healthy, with a fresh plug (or at least a known good plug swapped from another cylinder), add a tablespoon or two of oil to the offending cylinder (oil type or weight doesn't matter, I usually use ATF) start it up and see what happens. If there is no improvement, it is time to pull the head for inspection, or substitute a known good engine (3.0 time?).
 
I am going to put the valve cover back on, and have the car towed to my mechanics, and for no labor charges, he is going to diagnose it for me... will take some time though... so we shall see, I m done messing with it for now!
 
Well, there is some more things I wanted to ask:

I started taking apart the engine, UIM, LIM, allthat good stuff, got to the front valve cover, took it off, and one of the rocker/followers from cylinder was broken, and was not where it was supposed to be... the cam has a little scrapeing, nothing too horrible...

the lifter underneath that follower was not functioning properly... if you squeezed it, it had zero movement (forget what this is called)

mechanic now thinks that it may be a valve seat (gibberish to me again) and wants to pull the heads to check them out...

anyone else want to give any of their expertise as to what would cause the follower to break? would the lifter not functioning cause that?
 
HolyRollerzC3 said:
the lifter underneath that follower was not functioning properly... if you squeezed it, it had zero movement (forget what this is called)
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so is that how you are supposed to test those? I asked in another thread a while ago and didn't get any response. I want to know so that I could check mine while they are out.
 
SVT#4967 said:
so is that how you are supposed to test those? I asked in another thread a while ago and didn't get any response. I want to know so that I could check mine while they are out.
Click to expand...

well, we pulled one out, and used big ass pliers to try and squeeze it, and it was impossible to squeeze! And the others all seem to move a little.
 
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