DAT240Z Posted July 15, 2002 Share Posted July 15, 2002 When I set my car (83ZXT) to TDC (timing mark on the sprocket and the line on the cam plate are lined up, the mark on the crank pulley is lined up at the 0 degree mark, the cam lobes are up and the valves are closed). I pull the distributor cap and the rotor is between the #5 and # 1 plugs. Shouldn't the rotor face the # 1 plug at TDC? Also when I put a timing light on the car it was at 32 degrees advanced, I moved the distributor the other way to lower the advanced and the car ran worse that's when I though to check the timing marks. I set the car to TDC, 4 times and every time the rotor was facing between the two plugs 5 and 1. What could cause this would the distributor shaft happened to be off a bit? Is it possible to pull the oil pump and turn the shaft a tooth or two to get the rotor to line up with the # 1 plug? Quote Link to comment Share on other sites More sharing options...
Cody 82 ZXT Posted July 16, 2002 Share Posted July 16, 2002 I beleive you can do this. I just wonder how it got like that? Have you had all this apart before? Or is it just from chain stretch? Quote Link to comment Share on other sites More sharing options...
Guest LAYTON Posted July 16, 2002 Share Posted July 16, 2002 i just had to do mine and 5-6 times id line up the mark on the oil pump and the dist drive shaft and the lil bastard would move a tooth in installation id tripple check the drive shaft to make sure it hasnt moved a tooth sooner or later youll get lucky and it will go in right thats funny the exact thing just happened to me last week i thought for sure i had it right 3 times but the manuals picture is a little vauge and so on hope this helps be patient youl get it ! Quote Link to comment Share on other sites More sharing options...
Lockjaw Posted July 17, 2002 Share Posted July 17, 2002 Sometimes those rings on the dampner move, and your timing marks are wrong. I have a ZX engine in my 260 that is off so far, when I checked the timing with a dial back timing light, I could not even see the mark at 60 degrees advanced. I figured that someone had taken out the dist, and had it 180 degree's out, but it wasn't. You need to check your top dead center mark on the dampner and see if it in the right place. If you can rig something up to stop the piston, rotate the engine by hand until it stops. Mark the dampner. Then turn it the opposite direction until it stops and mark the dampner again. TDC is in the middle of those two marks. Quote Link to comment Share on other sites More sharing options...
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