I'm trying to do a leak down test, couldn't find a Haynes or Chilton for the '97 OBW, my FSM hasn't shown up yet. I found a tiny, tiny mark on the front crank pulley, I hope that's the timing mark I need. What's the firing order, which cylinder is which, and how many degrees of crank rotation until the next cylinder is at TDC (I used to know that part, but can't remember)?

 

My first cylinder I'm testing is front driver side. Leaking down 40 psi, hissing coming from the oil filler tube, and I can't think of any time in the 4 stroke cycle that there should be a path from any cylinder to the crankcase. I'll keep searching, but if you know, it would help me get'er done.

 

Thanks,

Monte

I think I've found it, 1-3-2-4, and the cylinders are

 

rear

3 4

1 2

front

 

and 1/2 crank turn between cylinders firing.

 

Monte

i think you got the firing order right, dunno about the cranking and tdc positions. doesnt hurt to get a second reference though (shoot for the haynes one, its a very nice read)

i think you got the firing order right, dunno about the cranking and tdc positions. doesnt hurt to get a second reference though (shoot for the haynes one, its a very nice read)

 

I think it's 1/2 a crank revolution between TDC's, 2 crank revs and #1 fires again.

 

Monte