Tach gets crazy, hesitation, eventually kills
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5th Gear
Joined: May 2011
Posts: 9
Likes: 0
From: SLC, UT
Tach gets crazy, hesitation, eventually kills
I could use some help with diagnosing the problem.
This is a 94' EVO motor. Here's the chronologic list:
First the tach started getting wonky and wouldn't read accurate over about 2500 rpm, and over 300 rpm its bouncing top to bottom. Rode like this for about a day.
Then the motor would experience hesitation at around 2800-3000 rpm. As rpm built gradually the hesitation was WAY more noticeable. If you whacked the gas wide open you could blast thru it without much to notice.
Then the hesitation got worse and caused the bike to kill, repeatedly. If I let the bike sit for a while (30 min or so) I could restart and continue the ride. Until it killed again.
Someone mentioned that it sounded electrical? I have no clue. I'm open to suggestions.
Thanks in advance
This is a 94' EVO motor. Here's the chronologic list:
First the tach started getting wonky and wouldn't read accurate over about 2500 rpm, and over 300 rpm its bouncing top to bottom. Rode like this for about a day.
Then the motor would experience hesitation at around 2800-3000 rpm. As rpm built gradually the hesitation was WAY more noticeable. If you whacked the gas wide open you could blast thru it without much to notice.
Then the hesitation got worse and caused the bike to kill, repeatedly. If I let the bike sit for a while (30 min or so) I could restart and continue the ride. Until it killed again.
Someone mentioned that it sounded electrical? I have no clue. I'm open to suggestions.
Thanks in advance
Outstanding HDF Member
Joined: Jun 2011
Posts: 3,036
Likes: 19
From: Savage, MN
Not sure what the deal with the tach is but if it were me I would change the spark plugs (cheap test/trial) If its hesitating and has a fiar amount of miles on it plugs could be the issue. Just one thought and a cheap and easy thing to try. Honestly could be a million things but plugs is a good place to start and possibly wires if its got ALOT of miles.
Outstanding HDF Member
Joined: Jun 2011
Posts: 3,036
Likes: 19
From: Savage, MN
One other thing to try is adding some seafoam in the tank for a few tanks maybe your carb is a bit on the dirty side as well. These are just a few things to try that are relatively cheap to do and very easy to do yourself. Good Luck hope it works for ya.
Road Warrior
Joined: Jan 2007
Posts: 1,276
Likes: 8
From: Minneapolis Area, MN
My identical experience last year just before Sturgis.
Road Master
Joined: Nov 2010
Posts: 1,115
Likes: 69
From: Bay Area, NorCal
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