Plugs
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6th Gear
Joined: Apr 2015
Posts: 11
Likes: 0
From: Indianapolis
Plugs
whats up fellow riders ! I have a question and maybe a dumb question. I have a 2004 dyna wide with stock motor and vance n hines longshots and with a hypercharger. I know some will say your hypercharger is the issue but i don't believe it is. The issue i am having is that i keep fouling out plugs on the rear cylinder. Whats wierd is that when i am riding normally vs just giving her hell it seems to run ok but once i giver hell she spits sputters like the plug is fouled. Then i take the front front plug out and its clean. And the i take out the rear plug and it has black soot on it. Hopefully somenone will be able to help me out on trying to figure it . I have changed the plug wires and ignition coil. Thanks for your time.
Stellar HDF Member
Joined: Sep 2009
Posts: 2,114
Likes: 666
Since your bike is 14+ years old it’s very conceivable you have an intake leak from front cylinder intake leak causing a lean condition. If someone has rejetted the carb they could have tried to cover up the lean cylinder by over-richening the mixture which, in turn, would make the engine run excessively rich on the cyclinder without the intake leak.
Also, I would swap plugs frt to rear to assure the same issue repeats.
Bob
Also, I would swap plugs frt to rear to assure the same issue repeats.
Bob
Seasoned HDF Member
Joined: Aug 2008
Posts: 5,081
Likes: 2,159
From: Ohio
It is possible, 15 minute compression test along with checking for a intake leak is good base diagnostics with a older engine. Everybody knows that.
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