samneric Posted May 6, 2008 Share Posted May 6, 2008 Ok, I have decided to tackle my engine issues one step at a time... I have my rotor pointing at #1 pickup when the flywheel is at 0. I took out the plug and made sure the piston was at TDC. When I crank the engine and if it starts, my timing gun (induction on #1 lead) fires at a whole in the flywheel (no numbers to be seen). Could this be caused by bad leads, or a bad coil or a bad stator in the dissy? Steve Link to comment Share on other sites More sharing options...
GeneralDisorder Posted May 6, 2008 Share Posted May 6, 2008 I took out the plug and made sure the piston was at TDC. TDC on the compression stroke? 1. Find TDC on the compression stroke of #1 2. Turn the flywheel BACK to 8 degrees BTDC. 3. Line up the rotor with whichever cap tower you want to be #1 4. Install the wires in the order 1,3,2,4 counter-clockwise from the one you chose to be #1 I am rarely off by more than 1 degree doing it this way. GD Link to comment Share on other sites More sharing options...
ferox Posted May 6, 2008 Share Posted May 6, 2008 Which distributor do you have? Nippon Denso or Hitachi? And did you line up the punch mark on the disty shaft with the mark on the disty casing above it? I think your rotor should point directly at the #1 pick-up when the flywheel is at 8 degrees Btdc. It will still be pointed in the #1 direction at 0 degrees, but it's on it's way past it. The pick-up and rotor blade are still interfacing, but it's not pointed straight at it at 0 degrees. I guess I'm thinking you might be a gear tooth off. Link to comment Share on other sites More sharing options...
ferox Posted May 6, 2008 Share Posted May 6, 2008 I assumed you were checking and re-installing you disty, but reading your post again I realize you didn't mention that. If you haven't done that, try it the way GD described. I see you have a couple brats so I am not sure what tell you to trouble shoot. If your engine is in decent shape and just needs to be tuned, the ea81 is super easy (relatively speaking) and the manual will have all the necessary specs with pic's on hand. If you have two ea81's in the brats I would swap out the disty from a known runner and see what you get. Link to comment Share on other sites More sharing options...
samneric Posted May 7, 2008 Author Share Posted May 7, 2008 TDC on the compression stroke? 1. Find TDC on the compression stroke of #1 GD Ok, so maybe I'm naive here but how do I know its the compression stroke? Do I need to hook up my compression tester, rotate the engine until it shows the compression or is there an easier way??? I assumed that with the flywheel at 0 degrees and the #1 piston at the TDC, that was the compression stroke. Could it also be the exhaust stroke with the piston at TDC and the flywheel at 0? Which distributor do you have? Nippon Denso or Hitachi? And did you line up the punch mark on the disty shaft with the mark on the disty casing above it? I think your rotor should point directly at the #1 pick-up when the flywheel is at 8 degrees Btdc Not sure on the type of dissy - I have pics here: http://www.alonzostreet.com/steve/gallery2/main.php?g2_itemId=542 I didn't match the punch mark on the dissy shaft to anything on the casing - I haven't read about that in the threads i've searched - I will look into that. I have a total of three dissys - the one that is on now seems to be the newest with no play in the bearings and clean components in the top. I know the book says the flywheel can only go on one way - I'm assuming that is correct. Steve Link to comment Share on other sites More sharing options...
jonas Posted May 7, 2008 Share Posted May 7, 2008 Ok, so maybe I'm naive here but how do I know its the compression stroke? Do I need to hook up my compression tester, rotate the engine until it shows the compression or is there an easier way??? i just remove plug #1 place finger over hole, use a socket wrench on the front of motor to turn it over. when you feel pressure, you know your on compression stroke. you may have to go around a few times to get it. its east to crank motor w/ the wrench. disconnect battery of course... Link to comment Share on other sites More sharing options...
samneric Posted May 7, 2008 Author Share Posted May 7, 2008 i just remove plug #1 place finger over hole, use a socket wrench on the front of motor to turn it over. when you feel pressure, you know your on compression stroke. you may have to go around a few times to get it. its east to crank motor w/ the wrench. disconnect battery of course... Cheers! Will give that a go. I just disconnect the HT lead from the coil to disable the ignition. Steve Link to comment Share on other sites More sharing options...
samneric Posted May 7, 2008 Author Share Posted May 7, 2008 Cheers! Will give that a go. I just disconnect the HT lead from the coil to disable the ignition. Steve IT's WORKING :grin: :grin: I was on the compression stroke - just had to advance the rotor by one tooth... It kinda looks like its gone past the #1 pick up but that's something I know now. Thanks GD, Ferox, Jonas I'm over the moon now Steve Link to comment Share on other sites More sharing options...
jonas Posted May 7, 2008 Share Posted May 7, 2008 good to hear. Link to comment Share on other sites More sharing options...
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