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Graham_boo@hotmail.com

Glowing red Exhausts

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Hiy there bought a seezed bike trx 420 2007 fuel injection , fitted new top end over hall Oem parts, starting bike up now exhausts glowing red, all timming marks are bang on also split to look at cam gear it's also lineing up,  thanks graham 

Edited by [email protected]

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Hi Graham , glowing red exhaust could be over fueling from running rich , like too big a jet , but since your fuel injected it is not a jet , makes me wonder if that 420 has some kind of tuner on it ?? -----    Or the exhaust is plugged / stopped up 

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Grahan , does your 420 have a oxygen sensor delete ???  Seems you bought it pre-owned 

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1 hour ago, [email protected] said:

Fishfiles, I am unsure if it has a oxegen sensor delete, it doesn't have one in the exhaust if thats where it is suppose to be thanks 

I just looked , it seems the oxygen sensors started around 2014 and up 

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9 out of 10 times, a red hot exhaust tells me the engine is running lean ?, or the exhaust system is stopped up ?. chances for either are 50-50 shot.

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15 hours ago, [email protected] said:

Thanks shadetree, I have removed the rear muffler and left the front pipe on, it's still glowing, could it possibly be the throttle body I have never done much with these thanks 

a clogged fuel injector will make it run lean. check the air filter too.

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