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backfiring baddly please help very desp!

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matphillipsuk
Borekit Bruiser



Joined: 02 Nov 2004
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PostPosted: 17:09 - 15 Mar 2005    Post subject: backfiring baddly please help very desp! Reply with quote
hi just got back from college and on the way my nsr 125 is back firing alot as in as soon as i rev the engine aswell as this the bike felt as though it was trying to clear its throat this isnt unusual it normaly does but after a couple of secs it goes away how ever this time it hasnt and i can get 40 out of it at most
theres plenty of engine oil in and plenty of gear oil. any ideas please reply asap
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Gazdaman
I did a trackday!!!



Joined: 12 Aug 2004
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PostPosted: 17:10 - 15 Mar 2005    Post subject: Reply with quote
Check/change the plug.

Failing that check/change the HT lead.

A backfire is unburnt fuel being ignited in the exhaust, which normally means a spark problem.

Gaz
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matphillipsuk
Borekit Bruiser



Joined: 02 Nov 2004
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PostPosted: 17:15 - 15 Mar 2005    Post subject: Reply with quote
would that cause a loss in power?
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matphillipsuk
Borekit Bruiser



Joined: 02 Nov 2004
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PostPosted: 17:33 - 15 Mar 2005    Post subject: Reply with quote
ive got the spark plug out what exactly is it im looking for?
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Scotsman37
World Chat Champion



Joined: 17 Aug 2004
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PostPosted: 17:36 - 15 Mar 2005    Post subject: Reply with quote
matphillipsuk wrote:
ive got the spark plug out what exactly is it im looking for?


Here's a guide to spark plugs to know what to look for ;

https://www.dansmc.com/Spark_Plugs/Spark_Plugs_catalog.html
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