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Bad map sensor ?

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Old Mar 25, 2020 | 09:13 AM
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Janus3/33's Avatar
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Default Bad map sensor ?

Hey guys / gals . I’m working on my 99 dyna . It’s bored over to a 103 , stroked , cammed bike has ran after build for a few years pretty strong always keep up on general maintenance such as oil changes , plugs , wires , battery on a tender when parked . I started to notice it would run sort of “poor” or less power threw out the throttle ranges then one day it wouldn’t fire up at all and would cough out the carb with a few turns to the motor while trying to start. I went right ahead and replaced all the gaskets from the intake manifold , carb , air cleaner . Still same symptoms . I’m curious as to if a bad map would do this . The bike has no voes sensor . I don’t want to buy a bunch of parts if it could be something else that I’m missing but I think it’s a map but have no experience with one going bad yet . I also cleaned the carb and gave it the once over on all hoses / gaskets for leaks as well it checks out good
 

Last edited by Janus3/33; Mar 25, 2020 at 09:20 AM.
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Old Mar 25, 2020 | 02:38 PM
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did you check for spark and compression? you need to confirm that stuff before moving to the map sensor.
m
 
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Old Mar 25, 2020 | 02:44 PM
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Yes Have spark and have compression .
 
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Old Mar 25, 2020 | 05:04 PM
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Whats the compression running? Which ignition are you using?
 
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Old Mar 25, 2020 | 05:20 PM
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what carb? and what fuel valve, did you double check and confirm that the carb is getting fuel to the bowl? is the accelerator pump squirting?
m
 
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Old Mar 25, 2020 | 07:50 PM
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Issue has been resolved with a map sensor off of my buddy’s bike thank god he was willing to do a quick swap out to help diagnose
 
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