77 KZ650. 2 Cold Pipes, Good Spark, Dreading Carb removal.

wrote:

FWIW. I had an intermittent firing problem on #1 & # 2 and had what I thought was good spark, so I ruled out spark.  But redoing the spark plug wire connections solved the problem. My motorcycle is a 1981 KZ650-CSR w stock electronic ignition & the plug wires can be unscrewed from the ignition coils.  

Carburetor removal. Hard airbox ducts can make it difficult to remove the carburetors.  If yours are hard, get new ones, then cut out the old as it's possible to break the airbox if the ducts are rock hard.  New ducts should be soft & flexible.
 

wrote:

With today's gasoline you need to start the motor once a week to avoid plugging jets (KZ650 with 750 motor/CVK34 carbs) a fuel filter from the tank to the carbs is a big help.

I had no time to ride this Summer as my Son bought a house, so I would start my bike about once a week. I think I only put about 220km on it, rode it to my annual meet and back then parked it, so it sat there for 3 months.

I take the carbs off with no issues as the rubber are new, slip them thru the air box holes. I can also make jet changes by dropping the float bowls but I have smaller hands.

Recently drained the carbs and blew them out to store the bike, if you don't use compressed air they can get plugged pretty easily.

wrote:

wrote:

With today's gasoline you need to start the motor once a week to avoid plugging jets (KZ650 with 750 motor/CVK34 carbs) a fuel filter from the tank to the carbs is a big help.

I had no time to ride this Summer as my Son bought a house, so I would start my bike about once a week. I think I only put about 220km on it, rode it to my annual meet and back then parked it, so it sat there for 3 months.

I take the carbs off with no issues as the rubber are new, slip them thru the air box holes. I can also make jet changes by dropping the float bowls but I have smaller hands.

Recently drained the carbs and blew them out to store the bike, if you don't use compressed air they can get plugged pretty easily.

Use a fuel stabilizer and your problem will be solved.  My 750 doesn't get ridden much these days, but with Marine Stabil, it always starts right up when I want to take a ride.

 

wrote:

With today's gasoline you need to start the motor once a week to avoid plugging jets (KZ650 with 750 motor/CVK34 carbs) a fuel filter from the tank to the carbs is a big help.

I had no time to ride this Summer as my Son bought a house, so I would start my bike about once a week. I think I only put about 220km on it, rode it to my annual meet and back then parked it, so it sat there for 3 months.

I take the carbs off with no issues as the rubber are new, slip them thru the air box holes. I can also make jet changes by dropping the float bowls but I have smaller hands.

Recently drained the carbs and blew them out to store the bike, if you don't use compressed air they can get plugged pretty easily.
 

wrote:

wrote:

With today's gasoline you need to start the motor once a week to avoid plugging jets (KZ650 with 750 motor/CVK34 carbs) a fuel filter from the tank to the carbs is a big help.

I had no time to ride this Summer as my Son bought a house, so I would start my bike about once a week. I think I only put about 220km on it, rode it to my annual meet and back then parked it, so it sat there for 3 months.

I take the carbs off with no issues as the rubber are new, slip them thru the air box holes. I can also make jet changes by dropping the float bowls but I have smaller hands.

Recently drained the carbs and blew them out to store the bike, if you don't use compressed air they can get plugged pretty easily.

 

mine has a fuel filter between the single line from the tank to where it connects to carbs 3&4. thats the only fuel line from the tank. There arent two.