98 115 intruder misses or coughs when reveing up in nutral

A

alley mechanic

Petty Officer 2nd Class
Joined
Apr 15, 2011
Messages
100
Hello all again, i have a issue with my 98 115 intruder , it runs very well since i rebuilt the carbs comes out of the hole very well hits 6000 rpm wide open no problem , this is what i noticed when i bring up the rpms to about 1400 to 1600 in neutral it will cough or misifire a few times but it runs with no problem at all from slow idle channel speed to wide open smooth as can be in gear , can be is this a sign i have the slow speed needle a little to lean or something else.

Thank you
alley mechanik
 
SparkieBoat

SparkieBoat

Captain
Joined
Aug 17, 2009
Messages
3,643
Re: 98 115 intruder misses or coughs when reveing up in nutral

2 stroke motors are made to rev up with a load, it is normal to see some skipping when you rev up with no load, which I usually do not even do. if your idle is good and you are running good at all RPM ranges under load, your carbs are fine. maybe a new set of champion QL78YC plugs at .030 gap would help.
 
B

boobie

Supreme Mariner
Joined
Nov 5, 2009
Messages
20,826
Re: 98 115 intruder misses or coughs when reveing up in nutral

Sparkie said it all.
 
A

alley mechanic

Petty Officer 2nd Class
Joined
Apr 15, 2011
Messages
100
Re: 98 115 intruder misses or coughs when reveing up in nutral

Thank you very much for that information, i dont normalley rev it up in neutrial i know it can cause engine troubles

thank you again
alley mechanic
 
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