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Honda CBR 600 (94) backfire - Posted on 2007-01-26 01:11:01

rslotabec
50cc Newbie

Joined:
Friday, January 26, 2007
Posts: 1
Location:
Debary
United States

Anybody have any Idea why a 94 CBR 600 with 6000 miles would start to backfire ? (and wont start) .

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	Honda CBR 600 (94) backfire - Posted on 2007-01-26 02:23:42
flyin2wheeler 1100cc Pro Racer Joined: Wednesday, December 01, 2004 Posts: 345 Location: Norn Iron United Kingdom	Id check the plugs.Definetley somthing to do with the ignition system.

	Honda CBR 600 (94) backfire - Posted on 2007-01-26 02:25:19
flyin2wheeler 1100cc Pro Racer Joined: Wednesday, December 01, 2004 Posts: 345 Location: Norn Iron United Kingdom	Check the airfilter too.I had a suzuki had the same problems and the airfilter was blocked so I pierced it with a screwdriver and it went fine

	Honda CBR 600 (94) backfire - Posted on 2007-01-26 07:52:10
bear 1300cc Superstar Joined: Friday, October 29, 2004 Posts: 5790 Location: cumbria United Kingdom	check yer plugs....if they are black and sooty then its running rich (not enough air) do as flyin suggests. if the plugs are a bisquit tan colour then the engine was runnin fine (could be a dodgy plug.) the back fire could be either fouled plug or dodgy plug. you sure the milage is genuine? also check the inlet rubbers for cracks.if there is a problem with too much air getting in it will show itself by white plugs (too lean). failing any of those take it to a honda dealer.

	Honda CBR 600 (94) backfire - Posted on 2007-01-26 14:11:17
the_grim_reaper 1000cc Pro Racer Joined: Wednesday, November 03, 2004 Posts: 288 Location: Southampton United Kingdom	First understand the problem, a backfire is unburnt fuel from the cylinders burning in the exhaust system. There are quite a few reasons why fuel could get into the exhaust but I have tried to list the main ones: 1. Fuel not burning in one or more cylinders - Check your sparkplugs, HT leads and coils, you can check the sparkplugs by placing one against the block, still attached to the HT lead, weraing rubber gloves and standing well away from the bike and turn the bike over. If you see a spark then the HT lead and coil should be fine, the plug might not be since it is far more difficult for a plug to spark under pressure. 2. Too much fuel - check your carbs, especially the floats, and make sure that nothing is jammed, too much fuel in one cylinder could flood that cylinder and allow fuel into the exhaust. 3. Too little air - check your air filter and also your airbox mounting points ontop of the carbs. That's about it really, my bet would be spark plugs/HT/coil. Cheers Grim

	Honda CBR 600 (94) backfire - Posted on 2007-01-26 14:41:02
bubblesloves69 1300cc Superstar Joined: Wednesday, November 03, 2004 Posts: 1352 Location: Next door to a pub in an interbred village, Kent United Kingdom	Maybe it hasn't been ridden enough pmsl I think grim has the right idea.... cos I haven't a clue unless you have changed the can recently?

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