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Old 10-20-2008, 02:51 PM   #1
jasperyate
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Default 96 cbr f3 not starting

i got this bike a few weeks ago. it needed a new head gasket and being the gracious man i am i obliged. i got it all back together and now it wont start. i started it for a second when i bought it so it was in working condition then, but now it wont start. its getting spark, and fuel is getting to the carbs. i have no reason to think that somethings wrong with the carbs, i took them off, put them in a box, and put them back on when the job was done, so they should be functioning properly. the battery is charged, and it turns strongly, but it wont start. any ideas what's wrong?
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Old 10-20-2008, 04:34 PM   #2
mscuddy
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Hmmm, new headgasket on a CBR eh? Sure you GOT ALL THOSE VALVES TIMED RIGHT?

All it takes it to mis-read the timing marks, and you'll be 180 degrees off. Which means all sorts of crazy stuff is happening.

Check those timing marks again and proceed from there.
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Old 10-20-2008, 07:06 PM   #3
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What he said.

If you hear(d) any "clanking" or "smacking" sounds when cranking it over, you'll also need a new set of valves. They're very delicate, and virtually any contact with the pistons will damage them. Even cranking-over "by hand".
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Old 10-21-2008, 09:18 AM   #4
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Iam with Mc, remember to also check and count the rollers on the cam chain as those are some of the timing marks aswell. Match up the cam sprokets to the gasket surface too.

A good idea is to rotate the motor without the plugs in them first to make sure nothing touches. Then double check the timing again.Good luck.
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