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[ 5 posts ] |
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sputtering and no rpms under load
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duckhead75
MMT Pro Member
Joined: Sun Sep 13, 2009 3:22 pm
Posts: 134
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 sputtering and no rpms under load I have a 36pd that I just put a k&n air filter on. Here recently it has been backfireing and idleing rough then today going back to the ramp it cuts out and will not rev up to wide open. If I put it in neutral it will rev up all the way to 4200. What gives? WTF?? Earlier I chalked it up to back gas but now I am not so sure. I had put seafoam and marine stabil in this bad gas.
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| Sat Nov 28, 2009 3:02 pm |
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deadbird8
MMT 1000 Club
Joined: Wed Feb 04, 2009 7:50 pm
Posts: 3833
Location: Old East Dallas, Texas
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Re: sputtering and no rpms under load Get rid of the suspect fuel and see how it runs.
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Excel 1851F4 w/ MB35HD+R CDI with a little bit of this and little bit of that
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| Sat Nov 28, 2009 6:54 pm |
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Gigafowl
MMT Elite Member
Joined: Tue Jan 13, 2009 7:19 pm
Posts: 6441
Location: Trinity Bay - Texas
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Re: sputtering and no rpms under load If not fuel related...
It could be runing on only one cylinder....
Try removing one plug wire at a time while running - if you get no change
when one is removed and engine dies when other one is removed...
Cylinder where there is no change is mis-firing or not firing at all...
_________________
Eat - Sleep - Hunt ! ! !
"It is good to have an end to journey toward; but
it is the journey that matters, in the end."
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| Sat Nov 28, 2009 7:27 pm |
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Rail
MMT Pro Member
Joined: Tue Jan 13, 2009 9:26 pm
Posts: 302
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Re: sputtering and no rpms under load Check your valve lash..
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"I just want silence. Jesus, it doesn't mean I don't like you. It just means right now, I like silence more."
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| Mon Nov 30, 2009 7:40 am |
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duckhead75
MMT Pro Member
Joined: Sun Sep 13, 2009 3:22 pm
Posts: 134
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Re: sputtering and no rpms under load It ran fine after I changed the gas and plugs. It backfire one time and ran good. I kinda think it had some trash in it. Please explain the valve lash
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| Mon Nov 30, 2009 7:44 pm |
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