Did top end rebuild and now won’t fire up... - Honda Rebel Forum
 
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post #1 of 6 Old 12-05-2019, 04:11 PM Thread Starter
 
Join Date: Sep 2012
Location: New Orleans
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Did top end rebuild and now won’t fire up...

I did a top end rebuild and replaced the cylinder head because one of the exhaust mounting stud holes was broken. Repair is finished and everything reassembled to spec according to service manual. I have compression and healthy spark on both spark plugs but no ignition. I used some starter fluid to see if it was a fuel flow problem and got nothing. New fuel was used as well. Any advice is much appreciated!!!
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post #2 of 6 Old 12-05-2019, 04:35 PM
 
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Double check timing.
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post #3 of 6 Old 12-06-2019, 09:58 AM
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Make sure the kill switch is in the RUN position. Are the plugs wet, showing fuel is reaching the cylinders? If the timing is correct, do a compression test, both dry and wet. There's a how-to on compression testing stickied in the Wrenching section of the forum.

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post #4 of 6 Old 12-06-2019, 02:10 PM Thread Starter
 
Join Date: Sep 2012
Location: New Orleans
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Thanks for the tips y’all. I did the rebuild with a torque wrench. I’m just trying to recreate my steps and I realized that maybe a couple of the camshaft holder nuts maybe have been off on the spec. Couldn’t have been by much tho. Would that cause a problem with the compression?
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post #5 of 6 Old 12-06-2019, 04:47 PM
 
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Check to make sure the timing isn't 180 off. I did that on an airhead BMW when I took the cylinders off.


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post #6 of 6 Old 12-18-2019, 09:43 PM Thread Starter
 
Join Date: Sep 2012
Location: New Orleans
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I got it fired up! It was the timing 👍.
Thanks so much for the help everyone! I just got back from my first test ride and everything went, felt, and sounded great. Initially when I fired it up the valves were clicking but a quick valve clearance adjustment and it purred like a kitten. There is however one thing that concerns me. When I fired it up after the valve adjustment and let it warm up a while I notice a bit of smoke coming out of the top end and seemed like it was coming from the exhaust ports. I’m hoping this is a bit of oil that’s around that is burning off from working on the rebuild?
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