Timing woes, I wish I wish I hadn't killed that fish! |
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Timing woes, I wish I wish I hadn't killed that fish! |
mike_the_man |
Apr 22 2004, 09:07 PM
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#1
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I like stuff! Group: Members Posts: 1,338 Joined: 11-June 03 From: Regina, Saskatchewan, Canada Member No.: 809 |
Hi all,
My car was running like piece of poop recently (74 2.0L with F.I.), but backing off the timing a little made it run a fair bit better. Today I took it for a little drive, got it nice and warm, and decided to try and re-time it. It turns out that my timing was correct when it was running poorly, and now I'm very confused. I checked top dead center on the fan and on the fly wheel, as well as looking at the position of the rotor. Everything points to top dead center. I then put a new mark on the fan at 27 degrees as per the PP tech article. I also found the 27 degree mark on the fan, and it lines up with the mark that I made. When I rev my car up to 3500 rpm and set the timing to the 27 degree mark (I disconnected the vacuum hose from the dizzy) the car runs like crap. But if I set the static timing (not revving the car up, but setting it at idle) to 27 degrees, it seems to run pretty good. I'm totally confused. Could it be that the mechanical advance isn't working? Is there any way to test the mechanical advance? What would the symptoms be? I hope this all makes sense, and I'm sorry for the long post. Thanks for all ideas. A (IMG:style_emoticons/default/beer.gif) to the first person that gets it right. |
airsix |
Apr 23 2004, 10:42 AM
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#2
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I have bees in my epiglotis Group: Members Posts: 2,196 Joined: 7-February 03 From: Kennewick Man (E. WA State) Member No.: 266 |
QUOTE(brant @ Apr 23 2004, 08:04 AM) Mike, I think that you are right and the machine groove does appear at the top when on #1.... but what I'm not certain is if the flywheel could be assembled in such a way as to change that. b I think you guys are correct. The flywheel mark will be at the top of the bellhousing at TDC. It'll be at the bottom when cyls 2 and 4 are at the top of their stroke (I line up the flywheel mark at the bottom when doing the valves on 2 and 4). You can't mount the flywheel incorrectly. It only goes on the crank in one possition so you can't screw it up. That's why I suggested using it as a reference. Mike, sounds like your timing and advance mechanism are set and working correctly. -Ben M. |
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