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poor wet teather running
#114404 11/25/2006 5:43 AM
Joined: Oct 2006
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codfish Offline OP
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My TBA runs great except when it is wet. As soon as it start raining heavy, the dam thing starts to loose power, backs fires, picks up power then looses it again. Makes rather interesting riding on the motorway. Anybody any ideas to cure this rather annoying problem.

Re: poor wet teather running
codfish #114405 11/25/2006 7:38 AM
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After pulling the gas tank for clear access, a light smear of dielectric grease on all the electrical junctions* and also the fuse connections may help. I have the plug wire boots wire tied into the coils as well. That one is a particularly weak connection, and the wires are known to fall out on occasion. Perhaps yours are taking on water at the coil side? Just a guess. If all that doesn't help, some new plug wires may be in order. Also - as part of a pre-trip inspection, I found my plug wires green & cheesy at the coil side. I believe I had too much air gap between the two contacts.

You might also want to check the carb rubbers and airbox, to see if water is making it's way in there as well.

Some forum members have reported hard starting when running in the rain. Just for good luck, I often idle for a few minutes to dry things off before shut down, when running in the rain.

*(I wouldn't put any dielectric grease on the high voltage spark plug or coil connections)

Re: poor wet teather running
Bucky #114406 11/26/2006 2:29 PM
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Thanks for the advice,it does feel like electrics. I will definitely give the grease a shot. It is a good idea having the plug wire boots tied into the coils, nice one. In the mean time it is bloody raining again. Thanks again

Re: poor wet teather running
codfish #114407 11/26/2006 6:16 PM
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Lifted this off of RatNet...Thanks to Dazco



Cruiser owners beware
dazco
SOTP Vintage Series



L.A., Ca.

Rides:
05' Neon Blue Speedmaster

Joined: Jun 21, 2005 Posted: 2006-11-26 14:30
Just wanted to post this because it's something that is rarely spoken of and i think it should be more widley known. The cruisers (maybe bonnies too but i can't speak for them) have 2 hoses that hang down from the airbox which are drain hoses. They are to drain any water or oil or whatever builds up in the box over time, mainly oil i think. they should be drained occasionally. the hoses have caps on the end that can be removed to drain them.

Anyways, thats not what i wanted to warn ya'll of, just needed to preface it with a description. When your bike backfires, and most seem to now and then during the initial tweaking period many of us go thru when modding, the caps on these 2 hoses can easily pop off. Mine did. I suspect one good backfire is all it takes. If these caps are gone they will suck air into the box, and this air is POST filter. Not to mention the fact the hoses hang down below the bike where they can suck up all the debris and dirt and WATER on the road. This may well be one of the causes of so many stories we hear of bikes dying in the rain.

I wanted to mention this because i suspect that probably the majority of us are cruising around with the caps gone and totally unaware of this. Remember, there are TWO of them. I mention that because i could only find one and had to take my battery out to see the other. The end of the second one i couldn't see at all, so i stuck a piece of coathanger in there and snagged the top of the hose and pulled to find the end. You'll notice them attached to the airbox right next to each other with hose clamps where they connect. Sure enough like the first one, it too had blown it's cap. I had no caps so i bent the ends over and tie wrapped them. You can get caps or do that, whatever you wish, but find them and cap them if they're gone because you will be sucking dirt and water into the carbs !

-----------------
2005 Speedmaster, Neon Blue, Thunderbike pipes, snorkel removed, UNI filter, drilled airbox, 130 mains, TBS needles.(2 shims) And speaking of Speedmasters, HERE'S MINE

[ This message was edited by: dazco on 2006-11-26 14:33 ]


"You're a long time underground!"
Re: poor wet teather running
Shutterbug #114408 11/26/2006 7:19 PM
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Quote:

Lifted this off of RatNet...Thanks to Dazco




Hmmmm... Lifted? Dazco? Hmmmm...

Good info just the same. Its been posted here on more than one occassion. At least enough times to lift it from here I might think.


2004 Triumph Speedmaster (J Lo) 2006 Yamaha Stratoliner (Adele)

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