atomic_fungus (atomic_fungus) wrote,

#1834: Two new pieces of Escort engine information.

And they don't make sense.

This morning I bestirred myself from the comfort of my chambers and hied myself out to the driveway, where I began the latest endeavor in the diagnostic procedures intended to enlighten me as to the mechanical ailment which besets my jalopy.

Compression check. #1: 165. #2: 180. #3: 180. #4: 150.

...number four is out of whack? #1 is within 9% of #2 and #3; so #4 is the problem?

So I did the leakdown test on #4, and I can clearly hear air escaping past the piston and into the crankcase. How much is normal, I don't know, because I banged the shit out of one of my knuckles--knocking off a chunk of skin and bleeding a lot--trying to move the crankshaft with a wrench and I didn't feel like doing that again. It may be normal, it may not be.

Besides that, though, when I pulled the spark plugs? All of them--all of them--have a coating of greasy black carbon on them.

If something went wrong with #4--oh, for giggles let's say I broke the piston rings when I installed it--I would expect #4 to have excess carbon on its plug; it would make sense. But not all four. So the engine is running pig rich, reason unknown.

And even though #4 is more than 10% off the other cylinders (about 15%) it's still clearly making decent compression, so it ought to be firing. Right?

So I'm going to have to think about this one, a lot, and I'm probably going to have to enlist some help, because this shit doesn't make sense and I'm pretty much at the end of my rope.

  • Post a new comment


    default userpic

    Your reply will be screened

    Your IP address will be recorded 

    When you submit the form an invisible reCAPTCHA check will be performed.
    You must follow the Privacy Policy and Google Terms of use.