 CDI swap
|
Joined: May 2009
Posts: 96
Member
|
OP
Member
Joined: May 2009
Posts: 96 |
So here's the story. My old CDI went south. It would only fire the right side when I pulled it. Bought a Procom off of EBay, no joy. It would fire the left just fine, but the right would backfire like nobody's biz. To late to return it I bought another Procom from Newbonneville. It worked better, but was still running rough. Backfiring, stalling, what have you. I gave up on Procom and bought a CDI from a '05 and installed it on my '04. Bike is running better, but I still get some backfire/hesitation from the left cylinder when I thwack the throttle off idle. Is the advance/retard timing different for the 865 vs the 790? If so, would you suggest reprogramming my Procom CDI to solve these issues? And how would I go about that? Thanks in advance. 
Last edited by v150super; 04/19/2013 12:57 PM.
'04 Speedy. Emgo 19" turn-outs, Polaris bellmouth, 142/45 Thrux needles, 3.5 turns. Pod filters My Bike
|
|
|
Re: CDI swap
|
Joined: Jan 2005
Posts: 4,073 Likes: 82
Loquacious
|
|
Loquacious
Joined: Jan 2005
Posts: 4,073 Likes: 82 |
Maybe it's not the CDI.. I'd look at the carbs, plugs and coils.
|
|
|
Re: CDI swap
|
Joined: Jan 2008
Posts: 1,174 Likes: 15
Learned Hand
|
|
Learned Hand
Joined: Jan 2008
Posts: 1,174 Likes: 15 |
did you match the setting position (1-9) on the procom with the number on your original CDI?
05 speedmaster - 1100cc, 11:1 racing pistons, Carillo rods, thunderbike cams, ported and polished head, 2mm over intake and exhaust valves, Barnett kevlar clutch, scepter pipes, oversize manifolds, 45mm HSR's, TTP stage 4 firestarter
|
|
|
Re: CDI swap
|
Joined: May 2009
Posts: 96
Member
|
|
OP
Member
Joined: May 2009
Posts: 96 |
I did match the setting to my serial number on both units. and I've changed the plugs and cleaned the carbs. I too am thinking that the coils might be on the way out.
'04 Speedy. Emgo 19" turn-outs, Polaris bellmouth, 142/45 Thrux needles, 3.5 turns. Pod filters My Bike
|
|
|
Re: CDI swap
|
Joined: Feb 2007
Posts: 23,225 Likes: 62
Fe Butt
|
Fe Butt
Joined: Feb 2007
Posts: 23,225 Likes: 62 |
Have you check and set the pick up coil gap?
I learned all I need to know about life by killing smart people and eating their brains.
Eat right ,Exercise ,Stay fit, Die Anyway!
|
|
|
Re: CDI swap
|
Joined: Mar 2009
Posts: 12,964
Stickman Yogi
|
|
Stickman Yogi
Joined: Mar 2009
Posts: 12,964 |
It just sounds like a bad coil to me (based on personal experience).
Live to love, love to live.
|
|
|
|
|
