Help with Backfiring.

[JoshHockey95]

I put a new motor in my 2000 blaster it is from a 2004. I grounded the extra wire (green wire with white tracer) and It runs and idles perfectly but backfires above 1/4 throttle. I have checked reeds, spark plug, wiring harness for wires grounding out, and tried some different jets. I don't know what the problem could be. We noticed smoke coming out where the flange joins the exhaust when it backfires. I don't have an o ring to put in there. I was thinking that could be the problem but it was that way on the old motor too and it ran great.

 

[blasterfreek30]

???sheared flywheel key mabe???

 

[Zwiser]

its the tors acting up because 03+ has the tors built right in the cdi and your hooking your wiring up to it and its fliping out cause it cant reconize the tors in the cdi so ill brb and tell you how to get rid of it gota look at my wiring

 

[JoshHockey95]

???sheared flywheel key mabe???

I don't have a flywheel puller to check right now but i'll keep that in mind. Also it ran fine in the old quad (I was told).

 

[blasterracer817]

make sure you coils tight

 

[blasterfreek30]

I don't have a flywheel puller to check right now but i'll keep that in mind. Also it ran fine in the old quad (I was told).

ahhh rule number 1 ....never listen to what the previous owner said.....if i only had a dollar for everytime ive seen "fresh top end" in any ebay or craigslist posting.....whos gonna put a brandnew topend in and then sell it lol...just saying bud

 

[Zwiser]

sorry cant help you there bro i thought i wrote down a diagram on my wiring but i cant find it and the blasties not here

 

[alex90]

tors tors tors... had the same issue .. on my build i have pictures of how i bypassed the tors. also check the plug gap once more

 

[JoshHockey95]

ahhh rule number 1 ....never listen to what the previous owner said.....if i only had a dollar for everytime ive seen "fresh top end" in any ebay or craigslist posting.....whos gonna put a brandnew topend in and then sell it lol...just saying bud

I agree with that but I got it from someone on the forum and it seems to be perfect with good compression and everything. I think its worth checking but I can't get the flywheel off. Unless anyone has a trick besides using a puller?

 

[Zwiser]

i think it was awk or someone used a wire to pull thru the holes and it came off

 

[Whitty21]

i am calling tors on this one......

 

[JoshHockey95]

tors tors tors... had the same issue .. on my build i have pictures of how i bypassed the tors. also check the plug gap once more

Can you post a link to your build?

 

[blasterfreek30]

I agree with that but I got it from someone on the forum and it seems to be perfect with good compression and everything. I think its worth checking but I can't get the flywheel off. Unless anyone has a trick besides using a puller?

heres ur trick bro.............................get a puller!!! lol

 

[JoshHockey95]

Tors seems right because at a certain rpm it actually sounds like its bouncing off a rev limiter

 

[Zwiser]

where at in pa do you live ill lend you mine if your close

 

[StrokedTater244]

heres ur trick bro.............................get a puller!!! lol

i like big mutha**ckin hammers! I:I

 

[alex90]

Can you post a link to your build?

http://www.blasterforum.com/full-rebuilds-128/new-blasters-i-wanna-build-right-32730/index3.html

pg. 3 halfway down u will see my photo documentation

 

[JoshHockey95]

Greensburg, thanks for the offer though, rep for you! I will get one just didn't do it yet.

 

[alex90]

http://www.blasterforum.com/full-rebuilds-128/new-blasters-i-wanna-build-right-32730/index3.html

pg. 3 halfway down u will see my photo documentation

any questions on it pm me and i will give you a lengthy write up on what i did since my documentation was somewhat brief. its unfortunate the 03+ all have the tors integrated

 

[JoshHockey95]

http://www.blasterforum.com/full-rebuilds-128/new-blasters-i-wanna-build-right-32730/index3.html

pg. 3 halfway down u will see my photo documentation

Thanks for the help but I have the tors blocked off that far and I have the coil from a 2000.