Cold No.1 cylinder

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emto
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Cold No.1 cylinder

Post by emto »

Another thread on cold rears. Mine when fired up on choke ( NC30), the No.1 downpipe remains cold. I've checked the plug by switching it with the No.3 but still the same. I've checked the HT lead and coil and all appears ok. The float heights are all ok and the carbs have just been synched. As soon as I can apply some throttle the pipe begins to heat up but remains stone cold when on choke. When fully warmed, the bike runs like a dream. Any ideas?
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CMSMJ1
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Bike owned: NC30-No9
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Re: Cold No.1 cylinder

Post by CMSMJ1 »

does no1 plug fire OK in no3?

I'd be thinking plugs usually if it has just started..
IMPERATOR REX ANGLORUM

The V4 is the law..

NC30 - No9 - my old mate
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emto
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Re: Cold No.1 cylinder

Post by emto »

Plugs are perfect, both firing ok in No.3, there brand new. It definitely doesn't seem electrical given meter readings I'm getting.
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jetblack
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Bike owned: '89 NC30 SEED
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Re: Cold No.1 cylinder

Post by jetblack »

Valve clearances?
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emto
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Re: Cold No.1 cylinder

Post by emto »

Would valve clearances have an input? They haven't been done in about 5000 Miles but sound ok.
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