Triumphrat

Aunatural · 10-31-2012, 04:02 PM

Getting close to that point on the Adventurer! Bought it this year with 4k miles on it and now it is at 6k. Fully serviced it when I got it home including the carbs. Went great for a while then the tach went south. No biggie, late model Sprint tach fitted, good to go for a few hundred miles more. Next It starts cutting out around 7500rpm. Thought to be the ignitor, so no worries, Ignitech to the rescue. Plug it in, load it correctly and the issue remains. Everything else tested good. Coils, pickup (airgap is dead on) and the loom. Since then I scored a set of Nology coils on the cheap and put in fresh plugs again. The issue still persists. Love the bike, but it is getting really easy to walk past it and ride the S3 or the Tiger (especially since I have not tagged it due to the issues). Anybody have any ideas before I write it off or want to come rescue it before I have a melt down?

Brough · 10-31-2012, 04:13 PM

I would look at the filters in the tank and the duck bill in the fuel line, at 7500 rpm its using a lot of fuel and needs a clear flow of fuel.
Some one on this site once wrote "If you think its an electrical problem is probably fuel, if you think its fuel its probably electrical"

Aunatural · 10-31-2012, 04:28 PM

Worth a try, but I had written off the fuel system since the tach and my meter show the ignition dropping out. Which would point to something related to the #1 cylinder, but it is more than a single cylinder miss. I never checked the duck bill (didn't know it was there), but the petcock was pulled when I did the full service and the screens were intact and clean at that time. I have an inlilne filter installed and it shows flow and no debris.

IrlMike · 10-31-2012, 05:07 PM

An extra inline fuel filter will itself add further resistance to fuel flow, so could increase the likelyhood of insufficient flow at high rpm/throttle.

You have an Ignitech, are you using the settings file that I've posted on the thread?

Aunatural · 10-31-2012, 05:47 PM

I believe I'm using your map Mike. Can you tell me what it is for verification.

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IrlMike · 10-31-2012, 08:07 PM

It's the one posted here:

http://www.triumphrat.net/maintenanc...ml#post2270818

Aunatural · 10-31-2012, 10:15 PM

Yep, thats the one that is loaded.

ArferBrick · 11-02-2012, 02:27 PM

Yeah, as Mike says, get rid of the inline filter, and make sure you have a really good (thick enough) fuel line.

Looks like you've changed out all the expensive stuff, maybe time to look at the cheap stuff

.

I'm guessing you have Mikunis.

I would also remove the carbs and pull the slide piston caps off. Check the springs (I've had one break into 3 pieces on me!! It does NOT improve performance), check the diaphragm rubbers, slides, and needles for clean smoothe operation and wear.

Check all over for possible air leaks around the diaphragm caps and the inlet rubbers. Filter box as well.

Pull the emulsion tubes out and give both them and the main jets a good ultrasound cleaning. Use new O-rings on re-assembly. Check the main air inlet jets at the rear of the carbs for blockage.

Balance the carbs as well, that never hurts.

Aunatural · 11-02-2012, 02:46 PM

Yep, they are Mikunis. Not afraid of them though as some others on here are since they were on the countless Gixxers of my youth. Plenty of experience with them. Anyway, all jets are new, carbs were completely torn down and cleaned. Everything is fine in that department. The inline filter is a course stainless steel screen style, there is plenty of flow. The expensive stuff was in the works from the beginning as I do not care for the lack luster performance of the stock machine, so no worries. Just had an itch for one of the early Hinkley machines.

WSC · 11-02-2012, 05:10 PM

"95% of all carburetor problems are electrical in nature and 95% of all ignition problems are carburetion"
- Amal Lucas