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  #1  
Old 12-24-2020, 12:06 PM
Jaystang97 Jaystang97 is offline
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Default Backfire issue

I inherited an '86 1810. I went and replaced the fuel line, in line filter, the air filter, and the spark plugs. Now it rough idles and backfires. If I half choke it it will idle. I put the old plugs back in and it does the same thing. Any suggestions would be appreciated. It ran fine before I put the new stuff on it.
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Old 12-24-2020, 12:16 PM
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darkminion_17 darkminion_17 is offline
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Did you use the same type of fuel filter? Not all are made for a fuel pump. You may have got dirt in the carb when you changed hoses also.
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Old 12-24-2020, 01:32 PM
Jaystang97 Jaystang97 is offline
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I did not use the same fuel filter. The reason I changed the fuel line and filter was because the line was cracked and filter looked old. I initially only changed the plugs and it was doing before I did the line and filter.
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Old 12-24-2020, 03:14 PM
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ol'George ol'George is offline
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Using the choke indicates you are running lean.
The fact you "disturbed" the fuel system, it is probable that some crud was induced into the carb.
At this point it would be advised to remove the carb. remove the bowl and
clean things up making sure the passages are blown clean with your air hose.
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Old 12-24-2020, 04:26 PM
Jaystang97 Jaystang97 is offline
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That was kinda the path I was heading towards by the looks of it its been quite a while since its been done!
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Old 12-25-2020, 11:27 AM
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Quote:
Originally Posted by ol'George View Post
Using the choke indicates you are running lean.
The fact you "disturbed" the fuel system, it is probable that some crud was induced into the carb.
At this point it would be advised to remove the carb. remove the bowl and
clean things up making sure the passages are blown clean with your air hose.
This, I suspect something from the rotten fuel line made it's way into the carb.
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Old 09-19-2021, 01:22 PM
Jaystang97 Jaystang97 is offline
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Well back at it again it ran all winter and summer just fine! Last week it started to stumble and you’d have to choke it to get it to run so I pulled the carb all apart cleaned it and blew it out! Now the nightmare it runs but as soon as you touch the throttle the tiniest bit it goes screaming and if you idle it all the way down and pull the choke it idles up also. I counted the turns on the needles when I took them and did nothing but clean it and blow it out I’m ready to just sell it and move on! Any help would be appreciated.
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Old 09-20-2021, 04:04 PM
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Sounds like you have a broken governor gear now.
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Old 09-20-2021, 09:50 PM
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It could very well be the governor gear is busted. But my thoughts seem to think improper re-assembly since the OP tinkered with the carb.
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