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buzbox
Joined: Thu Jul 16, 2009 11:30 pm Posts: 3600 Location: Wollongong NSW
Vehicle: LWB Sierra & XL7
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 Posted: Fri Mar 15, 2013 6:02 pm |
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I'll try to keep it brief...
Fresh engine, I had set at TDC with the distributor to fire #1 cyl. And it's not firing up. Brand new leads, The coil has spark..
Any ideas, something I have overlooked? Or just keep cranking it.
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atari4x4

az supporter
Joined: Mon Dec 11, 2006 10:30 pm Posts: 34842 Location: East Radelayed
Vehicle: SV420+SV620 Vitara's
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 Posted: Fri Mar 15, 2013 6:05 pm |
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don't they need to be timed off #4?  i'll have a sirch, there are some good thread on this & one just recently.
_________________ You're just hating because you don't understand
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royce

omnipotent being
Joined: Sun Jun 11, 2006 11:30 pm Posts: 17216 Location: Pluto
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 Posted: Fri Mar 15, 2013 6:56 pm |
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tdc or tdc with no1 on compression?
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buzbox
Joined: Thu Jul 16, 2009 11:30 pm Posts: 3600 Location: Wollongong NSW
Vehicle: LWB Sierra & XL7
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 Posted: Fri Mar 15, 2013 7:38 pm |
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JrZook
Joined: Tue Aug 08, 2006 11:30 pm Posts: 5517 Location: Holland Park
Vehicle: Awesome!!
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 Posted: Fri Mar 15, 2013 11:50 pm |
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It is *firing* in that vid but sounds like your timing is wayyyyyyyyyyy off. What else did you do to the motor? Timing belt?
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buzbox
Joined: Thu Jul 16, 2009 11:30 pm Posts: 3600 Location: Wollongong NSW
Vehicle: LWB Sierra & XL7
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 Posted: Sat Mar 16, 2013 6:01 am |
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Full rebuild, new timing belt.
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JrZook
Joined: Tue Aug 08, 2006 11:30 pm Posts: 5517 Location: Holland Park
Vehicle: Awesome!!
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 Posted: Sat Mar 16, 2013 7:58 am |
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Which mark did you line the cam pulley up with? E or I?
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303zuke

az supporter
Joined: Wed Aug 19, 2009 11:30 pm Posts: 2447
Vehicle: LJ50V, SJ70
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 Posted: Sat Mar 16, 2013 9:42 am |
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Did you set it to "fire" at TDC (which is how you set Cam Timing), or did you set it to fire at 8degBTDC (which is where Ignition Timing should be)? Sounds like your timing is 8 deg retarded!!
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buzbox
Joined: Thu Jul 16, 2009 11:30 pm Posts: 3600 Location: Wollongong NSW
Vehicle: LWB Sierra & XL7
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 Posted: Sat Mar 16, 2013 12:00 pm |
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Yup, It's retarded!!  After a fair bit more reading, googalizing and youboobing, I need to get it at BTDC, And that's the magic number I was looking for. Now should I remove the distributor when #1 cyl is at 8degree BTDC or can it simply be adjusted? Oh and I set it to I gnition on the cam pulley.
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JrZook
Joined: Tue Aug 08, 2006 11:30 pm Posts: 5517 Location: Holland Park
Vehicle: Awesome!!
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 Posted: Sat Mar 16, 2013 1:33 pm |
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There's your problem. It should be the "E" mark lining up on the cam pulley. In regards to the ignition timing the engine should at least run with anything around +/- 20degrees TDC then you can get your light on it to correct.
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buzbox
Joined: Thu Jul 16, 2009 11:30 pm Posts: 3600 Location: Wollongong NSW
Vehicle: LWB Sierra & XL7
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 Posted: Sat Mar 16, 2013 3:51 pm |
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That would explain where I fkd up.
So just to be clear, remove the timing belt, set cam pulley to E @ TDC, Crank w/#1 piston @ TDC, move both back to 8 degree BTDC and remove and adjust the distributor to fire @ #1cyl.
Now just a real noob question, The firing order is 1342, on the dist. cap it has 1234 in a clockwise motion. So I put cyl#1 on 1, 3 on 2, 4 on 3, 2 on 4... yeah?
Oh and thanks guy's, This has been a hell of a lot more useful than my workshop manual. I'm now going to go and set it on fire.
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JrZook
Joined: Tue Aug 08, 2006 11:30 pm Posts: 5517 Location: Holland Park
Vehicle: Awesome!!
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 Posted: Sat Mar 16, 2013 4:51 pm |
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Go look at your dizzy cap again. I will have 1342 in a counter clockwise rotation.
1.Align the crank so 1&4 are at TDC 2.Align the E mark on the cam sprocket 3.Determine weather 1 or 4 is on its compression/power stroke 4.Align dizzy to point roughly at which cylinder is on compression/power stroke 5. fire it up 6. throw a timing light on it
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buzbox
Joined: Thu Jul 16, 2009 11:30 pm Posts: 3600 Location: Wollongong NSW
Vehicle: LWB Sierra & XL7
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 Posted: Mon Mar 18, 2013 4:36 pm |
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I have done as you suggested but still no luck. I know it's not exactly rocket science which is the most frustrating part, but I'm not sure what else I'm getting wrong.. 
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JrZook
Joined: Tue Aug 08, 2006 11:30 pm Posts: 5517 Location: Holland Park
Vehicle: Awesome!!
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 Posted: Mon Mar 18, 2013 7:33 pm |
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So you have lined the cam sprocket with the "E" mark? How did you determine which cylinder was on compression/power stroke?
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buzbox
Joined: Thu Jul 16, 2009 11:30 pm Posts: 3600 Location: Wollongong NSW
Vehicle: LWB Sierra & XL7
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 Posted: Mon Mar 18, 2013 8:07 pm |
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Yep E on TDC, I put a long screwdriver down the spark plug tube on #1 & 4 cyl to determine TDC, also lined up the keyway to TDC.
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JrZook
Joined: Tue Aug 08, 2006 11:30 pm Posts: 5517 Location: Holland Park
Vehicle: Awesome!!
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 Posted: Mon Mar 18, 2013 8:46 pm |
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You also need to determine which cylinder is on compression as that's the one you need to set the dizzy to. Should be able to determine this by pulling the plugs and holding your hand over the plug hole and turning it over with a breaker bar. When its building pressure its on its power stroke.
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