After my car's slumber since early December until now, I started the beast up for the first since December. There is a slight knock it, Could it be a timing issue or spark plug issue? I'm including a link for the video. http://www.facebook.com/#!/video/video.php?v=10150195182771360 Jason
You can't hear a spark knock unless the engine is under a load. Can't view the video unless you're a FB member.
it's going to be VERY hard to diagnose a sound like that via a video because the other sounds tend to change each othe when recording with the cheap microphone that most cameras have. But if the knock that you are hearing truely sounds like the knocking in that Video it doesn't sound good, that sound like a rod (wrist pin) knocking... Unless you have heard the sound like this to start with, what I would do is put the oil filler cap back on and put the air breather back on and button everything up and if it is still making that "slappy/knocking sound you should probably take it to a mechanic friend or a garage that does engine repair and let them listen to it. Honestly though, that knock sounds a lot like a rod knocking. Not a lazy lifter or an exhaust leak.
A loose Main Bearing is a powerful dull thud or knock that take place regularly every other revolution. The knock can be confirmed by disconnecting the plug wire next to this cylinder. The knock would be less audible. Loose Rod Bearing is a metallic knock that can be heard the loudest at about 30 mph. The knock can be reduced or eliminated by disconnecting the plug wire to this cylinder. Loose Flywheel is a thud or click which is usually irregular. To test, idle the engine fast and shut off the ignition. If a thud is heard, the flywheel is loose. Loose Piston Pin is a sharp double knock which is usually heard when idling. Severity of knock should increase when the plug wire is removed to this cylinder.
