CBR 600F 1987 - 1990 CBR 600F Forum

89 600f1 Calif. Model

Old 10-08-2018, 04:34 PM
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Join Date: Sep 2018
Posts: 13
Default 89 600f1 Calif. Model

Hi guys quick question .
when I start the bike it's running on 2 cyl . 1 and 4 .
if I rock the bike left to right , rpms increase for a few seconds. Which I'm assuming is the bike running on all 4 .
I have to keep rocking the bike back and forth , otherwise it goes back to running on 2 cyl .also sometimes after rocking the bike and shutting it down .expecting 1 and 4 header pipes to be hot , it's sometimes 2 and 3 or even 1 and 3.
sounds like a fuel delivery issue ? I have new pump new petcock, new filters tank and inline .pump puts out the specified volume. Tank breather is good.
I had carbs rebuilt when I got it . But I think all he did was replace everything under the float bowl covers . I don't think he separated each carb.
sounds like my enrichment circuit may be clogged ?.
any advice greatly appreciated.
Old 10-08-2018, 11:19 PM
EchoWars's Avatar
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Join Date: Sep 2017
Location: Kansas City
Posts: 363

It's a PITA but not exactly brain surgery to pull the carbs and clean 'em. There's dozens of YouTube guides on how to go about it, and from your description that is the issue,
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