I know this is probobly a stupid question but just wanna ask to make sure im not missing something with my crazy mind right now....Anyways, i have my motor taken apart to change my intake man. (removed tb,vac lines, coils, alternator, belt etc.....) and noticed oil on one of my plugs so what i want to do now is take a comp test on that cylinder and need to know if its ok to crank the motor over to test it with all this stuff removed? Or am i missing something preventing that? Again, probobly a stupid Q i know....

 

Hard to say since you didn't list exactly what's off & what's still on. And is this a 4.6L or 5.4L in your '01?

 

All the cops are removed, fuel injectors disconnected but still in,tb removed, alternator off, intake still on and bolted in, vac lines disconnected and i think thats it. Basically everything is removed to take off the intake manifold except the manifold and the fuel rails are still on and connected to the injectors with those still in the intake. I just want to crank it for a comp. test. 5.4l motor. Thanks for the reply.

 

Then yes: as long as you haven't dropped anything into the intake runners or disconnected the timing chains, it's OK to do a compression test. It won't be accurate because the engine isn't warmed up, but follow the instructions in this caption as best you can:

 

Thanks for the reply.

 

You can also use the write up in my sig -