- Joined
- Feb 5, 2005
- Messages
- 8,538
- Age
- 77
- Location
- Kingman, Arizona
- Bike
- 2000 ST1100 ABS TCS
- STOC #
- 004
Noticed a significant drop in power on Thursday, after 3000+ miles from home with no noticeable problems. Pulled the carbs and found #s 3 and 4 with significant tears in the diaphragms and #s 1 and 2 both with radial cracks. Luckily, Adam has (had!) extras on hand. So, replaced all 4, 2 from his spares stash and 2 more from a set of funky defunct carbs.
I filled up in Casey at the BP near the Comfort Inn, but I've filled up there plenty of times so can't blame the gas. I'm wondering if my use of Ether to get started at least three times last November (brrrrrrrrrrrrrrrr!) might be a contributing factor?
Anyway, here's a few pics, just for reference:
From the funky carbs, #s 2 and 4 came out the bores okay, but pretty cruddy, here's one cleaned and the other in as-removed state.
Next shows the bores and broken sliders for #s 1 and 3 plus the salvaged diaphragms. Except for a few loose screws, etc. these carbs are worthless.
The really torn diaphragm was from lipSTick's #4. It wasn't this bad when first removed but was trying to see if I could get the old diaphragm out without destroying the slider. No luck so far. I'll work on this more when I get some free time.
Next is a close up of the carb adjustment screws. Note there are TWO springs, one on the screw and another below. The lower one is just stuck in there, nothing to hold it but tension. I can imagine if one of those got knocked out ic could really screw with yur carb adjustment.
Last is the gas line feed from the vacuum shut-off to the carbs. The one on the right (from the vacuum unit to the split manifold) is the one that cracked on me last November as I was headed across Arizona. The one on the far left (which feeds the left bank) split on me about a month ago when I was working on the enrichener circuit. Bottom line, those tubes get brittle over time, keep an eye on'em.
So, end of this story. The carbs can be troublesome as the miles pile up. This is the second time I've lost all 4 (did it on ReSTored a couple years ago too.) I think I've now replace 9 diaphragms. Guess that's not bad over 425,000 miles.
I filled up in Casey at the BP near the Comfort Inn, but I've filled up there plenty of times so can't blame the gas. I'm wondering if my use of Ether to get started at least three times last November (brrrrrrrrrrrrrrrr!) might be a contributing factor?
Anyway, here's a few pics, just for reference:
From the funky carbs, #s 2 and 4 came out the bores okay, but pretty cruddy, here's one cleaned and the other in as-removed state.
Next shows the bores and broken sliders for #s 1 and 3 plus the salvaged diaphragms. Except for a few loose screws, etc. these carbs are worthless.
The really torn diaphragm was from lipSTick's #4. It wasn't this bad when first removed but was trying to see if I could get the old diaphragm out without destroying the slider. No luck so far. I'll work on this more when I get some free time.
Next is a close up of the carb adjustment screws. Note there are TWO springs, one on the screw and another below. The lower one is just stuck in there, nothing to hold it but tension. I can imagine if one of those got knocked out ic could really screw with yur carb adjustment.
Last is the gas line feed from the vacuum shut-off to the carbs. The one on the right (from the vacuum unit to the split manifold) is the one that cracked on me last November as I was headed across Arizona. The one on the far left (which feeds the left bank) split on me about a month ago when I was working on the enrichener circuit. Bottom line, those tubes get brittle over time, keep an eye on'em.
So, end of this story. The carbs can be troublesome as the miles pile up. This is the second time I've lost all 4 (did it on ReSTored a couple years ago too.) I think I've now replace 9 diaphragms. Guess that's not bad over 425,000 miles.
)
