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Engine cranks and sometimes backfires
http://mudmotortalk.com/mmt_v2/viewtopic.php?f=3&t=68981
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Author:  Cheesehead_1 [ Sat Nov 19, 2016 12:18 am ]
Post subject:  Engine cranks and sometimes backfires

Hello. I searched and looked for this particular issue in the forums and couldn't find it. I just installed new heads bps muffler and mikuni carb. The motor cranks over will not start and sometimes back fires. I have checked for spark and both sides are firing. Any suggestions? Thank you for your time in reviewing this.

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Author:  Will C [ Sat Nov 19, 2016 12:00 pm ]
Post subject:  Re: Engine cranks and sometimes backfires

First thing is to re check valve adjustments

Author:  Cheesehead_1 [ Sat Nov 19, 2016 1:46 pm ]
Post subject:  Re: Engine cranks and sometimes backfires

Thanks Will. Hopefully I don't screw that up

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Author:  Will C [ Sat Nov 19, 2016 2:29 pm ]
Post subject:  Re: Engine cranks and sometimes backfires

Also sometimes those backfires can pop the intake gasket at the head and cause a large vacuum leak. Hope u get it lined out

Author:  Cheesehead_1 [ Sat Nov 19, 2016 2:41 pm ]
Post subject:  Re: Engine cranks and sometimes backfires

Ýa I have figured out this was certainly above my level of experience and should have hired someone to do it. Didn't have much on instructions. Bought my feeler gauge and I hope I can get this running.

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Author:  Will C [ Sat Nov 19, 2016 2:45 pm ]
Post subject:  Re: Engine cranks and sometimes backfires

As long as your having fun :D the bps website has some pretty good instructions

Author:  Cheesehead_1 [ Sat Nov 19, 2016 2:48 pm ]
Post subject:  Re: Engine cranks and sometimes backfires

Not fun. Needed my boat for tomorrow to break ice. No motor no go for me. But it is fun to an extent

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Author:  Cheesehead_1 [ Sat Nov 19, 2016 2:57 pm ]
Post subject:  Re: Engine cranks and sometimes backfires

Thanks for the heads up. I really wish I would have posted before for suggestions. You're right bps had great information.

I feel like an idiot for not finding that information sooner. Hopefully I haven't damaged anything.

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Author:  Cheesehead_1 [ Sun Nov 20, 2016 1:28 am ]
Post subject:  Re: Engine cranks and sometimes backfires

Got home from work followed bps directions and an hour later she running good...thanks again guys I appreciate it more than you know

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Author:  Will C [ Sun Nov 20, 2016 9:18 am ]
Post subject:  Re: Engine cranks and sometimes backfires

Good deal......

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