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| Back fire after gutted http://www.mudmotortalk.com/mmt_v2/viewtopic.php?f=3&t=41434 |
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| Author: | rudyeng [ Wed Jun 05, 2013 10:54 am ] |
| Post subject: | Back fire after gutted |
Motor runs great. took bog out. Now backfires from WOT. What the hell do I do ?? |
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| Author: | DUCK HEARSE [ Wed Jun 05, 2013 10:58 am ] |
| Post subject: | Re: Back fire after gutted |
got a leak some where |
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| Author: | forever draggin [ Wed Jun 05, 2013 10:58 am ] |
| Post subject: | Re: Back fire after gutted |
Adjust ur carb that's what I did |
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| Author: | banded-mallard [ Wed Jun 05, 2013 11:02 am ] |
| Post subject: | Re: Back fire after gutted |
When you gutted it, did you leave the stock outlet pipe? |
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| Author: | forever draggin [ Wed Jun 05, 2013 11:03 am ] |
| Post subject: | Re: Back fire after gutted |
| Author: | rudyeng [ Wed Jun 05, 2013 11:30 am ] |
| Post subject: | Re: Back fire after gutted |
Yes I left the stock outlet pipe. Also turned the idle jets out to 2.5 turns. That removed the bog |
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| Author: | forever draggin [ Wed Jun 05, 2013 11:31 am ] |
| Post subject: | Re: Back fire after gutted |
Go some more |
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| Author: | rudyeng [ Wed Jun 05, 2013 12:01 pm ] |
| Post subject: | Re: Back fire after gutted |
past 2.5 turns on idle jet ? how much ? |
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| Author: | Buddy [ Wed Jun 05, 2013 4:34 pm ] |
| Post subject: | Re: Back fire after gutted |
How Far Did You Stick The Outlet Pipe Into The Can? |
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| Author: | rudyeng [ Wed Jun 05, 2013 4:46 pm ] |
| Post subject: | Re: Back fire after gutted |
I kept the original outlet pipe and just drilled additional holes inside the can. Breathes much better and throttle response is great but now it back fires. Also opened up the air idle to 3.5 turns. |
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| Author: | swamprat26 [ Wed Jun 05, 2013 4:56 pm ] |
| Post subject: | Re: Back fire after gutted |
Mine did the same. Head job fixed it. A head job is always the answer. Lol Sent from my iPhone using Tapatalk |
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| Author: | forever draggin [ Wed Jun 05, 2013 5:40 pm ] |
| Post subject: | Re: Back fire after gutted |
| Author: | banded-mallard [ Thu Jun 06, 2013 4:40 am ] |
| Post subject: | Re: Back fire after gutted |
| Author: | rudyeng [ Thu Jun 06, 2013 9:24 am ] |
| Post subject: | Re: Back fire after gutted |
Steady air stream coming behind this fitting. But I think its welded on the inside ? Could it be the cooling fan air or is this fitting leaking. How do you test it ? |
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| Author: | eljefe [ Thu Jun 06, 2013 12:24 pm ] |
| Post subject: | Re: Back fire after gutted |
you would know if its hot exhaust air .... most likely the cooling fan venting near there, prolly to help cool it. |
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| Author: | Team Camo [ Thu Jun 06, 2013 10:52 pm ] |
| Post subject: | Re: Back fire after gutted |
Yep, it's just the fan air. FYI, I ported that carb intake some also. Fatten it up a lil more. |
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| Author: | Mag10 [ Fri Jun 07, 2013 11:03 am ] |
| Post subject: | Re: Back fire after gutted |
Is it backfiring only when you rev and let off with no load. If so, that is pretty typical for these open exhausts. If it is still doing it when you rev and let off under load (prop in water) then worry about it. Mag10 |
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| Author: | rudyeng [ Fri Jun 07, 2013 3:51 pm ] |
| Post subject: | Re: Back fire after gutted |
Running great. Opened up the idle air mixture 3.5 turns. No bog. No backfire under load. Only backfires on land at WOT to zero. Problem is going away on its own. Motor is still breaking in. I think it's starting to run better. Thank you all ! |
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