Lotus Elan

Back fire

PostPost by: el torro » Sun Dec 30, 2018 7:38 pm

Happens at idle speed but not on acceleration/ return to idle , on Weber dcoe big valve twin cam,any hints welcome or recommended experts in Scotland
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PostPost by: benymazz » Tue Jan 01, 2019 5:32 am

Any advice I can offer is purely speculative and based on my very limited experience, but is it backfiring through the intake, or is it an "after-fire" (in the exhaust)?
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PostPost by: Donels » Tue Jan 01, 2019 10:41 am

My guess would be an air leak, probably from the rubber seals/misab plates between carbs and manifold.

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PostPost by: el torro » Tue Jan 01, 2019 2:15 pm

Thanks for reply yes I will tighten up carbs to inlet manifold I have fitted the Swedish plates so I think they should take more pressure
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