Triumphrat

03cruiser · 12-19-2005

10 days ago I rejetted my carbs to 132 mains and 45 pilots.

Well now I've got a small problem. When I finished the jetting, I took the bike for a quick ride to see if it worked. No problems at that time. A few days later I took the bike out for approx. 30 miles of highway and had a blast - still no problem. Now here comes the problem. Saturday (two days ago) I went to start it and the bike wouldn't start due to the battery being affected by the cold weather. I ran the battery down bad. So, I put a charger on it and charged the battery up and it started without a problem. Problem is - the bike is, well NOT backfiring, but there is a "PFFFT" coming from the carbs at low RPMs. It isn't steady, and it's not ignited gases, but there is definitely a quick 'pressure release' coming from the carbs at intermittent spacing. Doesn't happen at high RPMs that I can tell, just at idle.
I would be thinking that I was running rich now, but the first two rides with the new jets were flawless. I'd think I flooded it while attempting to start it when I ran down the battery, but the 15 miles I put on it afterwards would surely have corrected any type of "flooded" condition. Maybe the temp - 39 degrees? But the two previous rides were at colder temps.
So I'm stumped. I'll take it in tomorrow to have the dealer look at it unless any of you smart guys can help before then.

LT · 12-19-2005

Did you remove carbs? Shouldn't be any pressure. Maybe you are hearing vacuum. Intermittent may be a pinched tank vent line. I guess you went back and checked to see if gaskets were seated properly.

03cruiser · 12-19-2005

No, I didn't remove the carbs (and THAT was a joy :-) .

The thing that gets me is the only thing that happened between the great rides and the not-so-great was wearing down the battery trying to start it. I'm going to go out right now and check all the vacuum caps on the carbs to see if they are good.

03cruiser · 12-19-2005

Well lookie there! One of the carb vacuum caps I put on when I removed the CA Emissions unit had split. I must admit that they were a little too small. I just replaced both of them with correctly sized ones. I'll see if it works tomorrow when its warmer than 19 degrees. :upthumb: