symptoms of a skipped timing chain

[Lewis Shadoff]

There are several possible scenarios for a skipped timing chain. Note that
skipping one tooth on a cam sprocket causes a 27.7 degree change.  (26
teeth on a cam sprocket. 360/26=13.8 degree change.  But the cam goes
around once for every two crank rotations so multiply by two.)

1) It can skip a tooth on the intake cam.  Since the distributor is driven
off the exhaust cam, it will not be affected.

2) It can skip a tooth on the exhaust cam.  This would affect the
distributor by 27.7 degrees as well.

3) It can skip a tooth on the crank sprocket (less likely according to a
recent discussion on the list).  This will affect both cams and the
distributor by 13.8 degrees.

Lew

Lewis Shadoff
Lake Jackson, TX
'97 200SX SE-R, Level 10 Auto, HotShot turbo
http://www.brazosport.cc.tx.us/~lshadoff/turbo/