What RPM does the engine idle at and is it smooth with no surging? Check charging voltage at idle and 2k RPM.
Agreed. Full output from alternator should be seen by 1500 RPM, 2000 RPM for sure.The 1500 doesn't like to be idled on the stock alternator for long. The output from the alternator at idle is below the bike's demand and you'll prolly be discharging your battery if you idle long enough (even more so with the brakelights and fans running). Generally, the alternator can keep up if th bike is at or above about 1500 RPM (you should be able to tell this by watching your headlamp as you bring in throttle)
AICV solenoid valve is on left tube above horn in front of fan, Decel compensation valve (Shot) is under left pocket area, Air injection control valve is between the intake manifolds under carbs, shot air valve is under carbs left front, shot air solenoid valve (neutral) with hoses #3 & 4 front of carbs under coils, air jet controllers under right pocket. AFAIK air jet controllers work on the slide circuits of carbs and should not affect idle. Yellow is decel compensation, green for air injection, carb and air jet controllers use white. The above from my 88, YMMV.I found another yellow hose right next to the first one that was plugged off. I have studied the sparsely labeled diagram of the shot air system in the manual and am having difficulty seeing where the hoses go and matching what I see on the bike to what I see in the book. Hopefully I can get these hoses reconnected, ride it, and record what I experience. Maybe a miracle will occur. Is it important to test drive with the airbox off and hoses plugged? It does not take much to reinstall it.
I discovered the air pre-filter that filters the air supply to the carb-jet solenoids (I believe all that terminology is correct). The filter element was dry, brittle and had a hole in the middle. It turned to powder when I handled it. Could unfiltered air or particles of filter media contaminate the solenoids and effect the carb performance?
If I buy new bulk vacuum hose at the auto parts store are there key words I need to use to assure I get the right product?HoganJr
1) The main valve is between the 2 intake manifolds and under the carbs, it looks like a EGR valve from a car. The solenoid valve looks like a mini hand grenade and is attached to left frame tube above horn (my ride) and is nothing more than a barometric pressure sensor..
1. Where is the Air Injection Valve on a 1990 or 1991 and what does it look like?
2. Where are the One-Way Valves and what do they look like?
3. The #4 Green Hose: Is that the large-diameter hose that comes out of the front-right corner of the Air Box?