I am doing the fine tuning on a set of cleaned and rebuilt carbs on a 2000 Phazer. It's running pretty good. I have a couple of related questions.
1) I am trying to sync the carbs using a set a dial type vacuum gauges for motorcycles. I removed the YEIS chamber and blocked the open ports with a stopper drilled to accept a brass tube. Routed a vacuum line from the brass tube to the vacuum gauges. It is airtight. The problem is that manual calls for a manifold vacuum of 200 mmHg and a difference of 10 mmHg. My question/problem is that at idle it only draws about 90 or 100 mmHg. The needles jump around a lot but settle down when the restrictor valve at the gauge is adjusted almost shut. I can sync them so they draw the same vacuum and it does idle a lot smoother. My question is: Why the low vacuum. The sled runs as well as ever so I am pretty sure there is nothing grossly wrong. Is there something wrong with my test setup?
2) The choke/starter/enrichener cable setting has me confused. The manual says there should be one mm of cable freeplay. The plunger assembly is preloaded with a spring so there really is no freeplay. I set it up so there is 1mm of "freeplay" when the enrichener lever on the dash is full on. This keeps the plunger from "bottoming out" when choke lever is fully on. The plunger is also fully seated when the lever is off. This makes sense and seems to work ok. Is there a better procedure? Am I missing something? The manual is not very clear.
3) How the heck do you replace the in-tank fuel filter. I fished it up to the filler opening but could only get it 1/2 way out. The line was too short by about 2 or 3 inches. Is there a trick or some other way of getting to it? It's not covered in the manual.
Any help is appreciated.
John
1) I am trying to sync the carbs using a set a dial type vacuum gauges for motorcycles. I removed the YEIS chamber and blocked the open ports with a stopper drilled to accept a brass tube. Routed a vacuum line from the brass tube to the vacuum gauges. It is airtight. The problem is that manual calls for a manifold vacuum of 200 mmHg and a difference of 10 mmHg. My question/problem is that at idle it only draws about 90 or 100 mmHg. The needles jump around a lot but settle down when the restrictor valve at the gauge is adjusted almost shut. I can sync them so they draw the same vacuum and it does idle a lot smoother. My question is: Why the low vacuum. The sled runs as well as ever so I am pretty sure there is nothing grossly wrong. Is there something wrong with my test setup?
2) The choke/starter/enrichener cable setting has me confused. The manual says there should be one mm of cable freeplay. The plunger assembly is preloaded with a spring so there really is no freeplay. I set it up so there is 1mm of "freeplay" when the enrichener lever on the dash is full on. This keeps the plunger from "bottoming out" when choke lever is fully on. The plunger is also fully seated when the lever is off. This makes sense and seems to work ok. Is there a better procedure? Am I missing something? The manual is not very clear.
3) How the heck do you replace the in-tank fuel filter. I fished it up to the filler opening but could only get it 1/2 way out. The line was too short by about 2 or 3 inches. Is there a trick or some other way of getting to it? It's not covered in the manual.
Any help is appreciated.
John