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General question

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Jeff

05-21-2001 14:37:17




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Occasiomally my TE20 backfires through the inlet manufold. Iam qurious as to why this does not ignite the petrol/air mix in the carb and cause an explosion.

Thanks

Jeff




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Jeff

05-23-2001 10:33:13




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 Re: General question in reply to Jeff, 05-21-2001 14:37:17  
Thanks for your help guy's but Iam still not convinced, we all know how flamable petrol is, and even if the flames are only in the carb for a slit second, (before being sucked back in) surely that would be long enough to ignite the mix,
Thanks agian
Jeff



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dennis

05-23-2001 17:25:21




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 Re: Re: General question in reply to Jeff, 05-23-2001 10:33:13  
I know that if the vehicle keeps running, it won't burn. If it stops immediately it will burn whatever is in the carb. Had a Chevy v8 that backfired thru the carb, stopped and burned a section of the hood paint above the carb before I could get it out. There can't be any other reason for it NOT to burn other than the suction as that's the only difference betweeen the two senarios.



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dennis

05-21-2001 15:46:04




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 Re: General question in reply to Jeff, 05-21-2001 14:37:17  
I'm no scientist but I'll bet that it's because an instant later, the engine is sucking everything back into it.



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Ray,IN

05-22-2001 20:33:15




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 Re: Re: General question in reply to dennis, 05-21-2001 15:46:04  
I agree with Dennis' reasoning,because when starting an engine by pouring gas into the carb., and it backfires-usually flooring it will suck the fire out if the engine continues to run. The cause of your backfiring may be carbon buildup, weak springs etc. on the intake valves. Timing will cause this also. To remove carbon from the combustion chamber, add Gumout to the fuel tank and spray some directly into the carb, bypassing the air filter. until the engine stalls. Let it set overnight and start it the next day. I can't guarantee this will work, but it does for me.

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