mcexpress tnytro flame thrower

A

akwakely

Free Member

Sep 18, 2008

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fernie

• Dec 27, 2009

• #1

2009 nytro with a t19 mcexspress terbo 16 lb boost.
at a ildle it pops. when you come off the throtle it back fires and throws flame. could this be to much vp or a valve timing problem or even a vacume line off.

sled ran great for a few rides but then just stared popping at a idle


any thoughts would be great!!!

 

Z

zebiraross

Free Member

Oct 8, 2003

1,410

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Utah

• Dec 27, 2009

• #2

I think you might be to rich, residule unburnt fuel after a wot pull and it backfires. Your saying this happens when you let off the throttle after a pull and going down to idle right?

 

M

Menace1

Well-known member

Oct 23, 2008

299

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28

Calgary

• Dec 27, 2009

• #3

Second what zebiraross said, just too much fuel when letting off the gas so fast. Does that happen at all evelations?

 

A

akwakely

Free Member

Sep 18, 2008

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fernie

• Dec 30, 2009

• #4

the sled does it only once its warmed up but pops constantly at a idle

 

Thistledoo

Well-known member

Lifetime Membership

Aug 8, 2001

2,378

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83

Lethbridge Alberta

www.babybeadtreasures.com

• Dec 30, 2009

• #5

More details....brand new kit?

 

0

0007

Free Member

Nov 28, 2007

510

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Vernon

• Dec 30, 2009

• #6

What's a "Terbo" ? LOL
My guess is that there's something wrong with the MCX box and it's firing the secondary injectors at idle
Try unplugging the secondary injectors and see if it fixes the problem

 

A

akwakely

Free Member

Sep 18, 2008

101

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fernie

• Jan 2, 2010

• #7

so it turned
out that it was a vacume line that came off nothing major just a pain in the ***