Need help in Japan!!!
Thread Starter
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6th Gear
Joined: Jun 2014
Posts: 13
Likes: 0
From: Kurihama, Japan
Need help in Japan!!!
First time poster but dying for help here! A couple months back my 99 Sporty 1200 started backfiring badly, lost all RPMs (even with throttle twist), and died (only happens when warm-starts great and runs when cold steel). Since then I've replaced batt, coil, carb, plugs, wires, and vacuum hoses between petcoc and carb and still having the issue. Took it to a mech who is draining me dry and still can't find the issue. Picking her up tomorrow and plan to do a heat test on the ignition module, crank position sensor, and ECM and am looking for recommendations on where to go first. All wires are tight and not a bad gas issue (tried multiple octanes on multiple fill ups). In Japan it's a pain since HD shops don't speak English and it takes forever to get parts from the US so if anyone can make a recommendation and help a submarine Sailor out on his easter egg hunt I'd be much obliged.
Thread Starter
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6th Gear
Joined: Jun 2014
Posts: 13
Likes: 0
From: Kurihama, Japan
A set of plug wires but that's all. The only other thing was the mounting bracket for my speedo and tach snapped from the bike's vibration during winter riding here; I didn't see any wire wear going into the gages and have been holding it together with a zip tie while I wait from a new one from Stateside.
Seasoned HDF Member
Joined: Sep 2009
Posts: 25,306
Likes: 2,443
From: Eastern NE
When's the last time anyone ran through your carb? Seems like you could have something amiss...
Also, the mech can't find any bare/loose/rubbing wires anywhere? Don't think it would be electrical as you're having problem when bike's warmed-up. Has to be fuel...somewhere.
Also, the mech can't find any bare/loose/rubbing wires anywhere? Don't think it would be electrical as you're having problem when bike's warmed-up. Has to be fuel...somewhere.
Thread Starter
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6th Gear
Joined: Jun 2014
Posts: 13
Likes: 0
From: Kurihama, Japan
When's the last time anyone ran through your carb? Seems like you could have something amiss...
Also, the mech can't find any bare/loose/rubbing wires anywhere? Don't think it would be electrical as you're having problem when bike's warmed-up. Has to be fuel...somewhere.
Also, the mech can't find any bare/loose/rubbing wires anywhere? Don't think it would be electrical as you're having problem when bike's warmed-up. Has to be fuel...somewhere.
Thread Starter
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6th Gear
Joined: Jun 2014
Posts: 13
Likes: 0
From: Kurihama, Japan
When I pick up the bike tomorrow I'll look at them.
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Outstanding HDF Member
Joined: Oct 2010
Posts: 2,706
Likes: 14
From: Near Frankenmuth, MI
Your troubles could be related to the intake and it's seals. A leaking intake can become worse when heated, and could be better cold, while seals are cold they may be doing their job.
Mist the intake sealing points on the heads and the intake while running with anything from water to choke cleaner (do not get on painted surfaces). Moistening the intake cold may not register any change in engine speed. Get it hot and try again. Be sure you are not allowing the spray into the air filter because this will cause the engine to respond.
The leaky intake is one of the top 5 Harley engine troubles. Search the forum and you'll find hours of reading all about it.
Mist the intake sealing points on the heads and the intake while running with anything from water to choke cleaner (do not get on painted surfaces). Moistening the intake cold may not register any change in engine speed. Get it hot and try again. Be sure you are not allowing the spray into the air filter because this will cause the engine to respond.
The leaky intake is one of the top 5 Harley engine troubles. Search the forum and you'll find hours of reading all about it.
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Road Warrior
Joined: Oct 2012
Posts: 1,268
Likes: 47
From: Tokyo
If you still have trouble the Harley dealer in Sagamihara on Route 16 have English speaking staff and one of the mechanics speaks very good English so communication will be no problem. Just an idea if everything else fails.
