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Technical
Initial engine break-in setup — running rough
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<blockquote data-quote="philstar" data-source="post: 635453" data-attributes="member: 17600"><p>I forgot to block the rear vacuum port on the carb which won't have helped things <img class="smilie smilie--emoji" loading="lazy" alt="🤦♂️" title="🤦♂️" src="https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f926-2642.png" /></p><p></p><p>I have now re-assembled everything and got it running again and it does seem better, though there is a backfire if I rev it high and hard from idle. I have tried pulling off a number of times up a slight slope on my drive and it hasn't come close to stalling, so I think I'm going to fix the rest of the bits to get it road legal then get it insured and give it a road test.</p><p></p><p>If I'm still concerned I might take it to a garage where they can perform a more accurate setup.</p><p></p><p>I'm still not convinced about my butterfly valve/choke setup (<a href="https://earlybay.com/threads/stepped-cam-set-up.74217/#post-635449" target="_blank">Thread: Stepped cam set up</a>) as it seems that even if I hold the cam fully open, the butterfly valve isn't quite vertical, and it is "loose", so I can then stand it up straight with my other hand.</p></blockquote><p></p>
[QUOTE="philstar, post: 635453, member: 17600"] I forgot to block the rear vacuum port on the carb which won't have helped things 🤦♂️ I have now re-assembled everything and got it running again and it does seem better, though there is a backfire if I rev it high and hard from idle. I have tried pulling off a number of times up a slight slope on my drive and it hasn't come close to stalling, so I think I'm going to fix the rest of the bits to get it road legal then get it insured and give it a road test. If I'm still concerned I might take it to a garage where they can perform a more accurate setup. I'm still not convinced about my butterfly valve/choke setup ([URL='https://earlybay.com/threads/stepped-cam-set-up.74217/#post-635449']Thread: Stepped cam set up[/URL]) as it seems that even if I hold the cam fully open, the butterfly valve isn't quite vertical, and it is "loose", so I can then stand it up straight with my other hand. [/QUOTE]
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EarlyBay Forums
Technical
Initial engine break-in setup — running rough
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