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I manage to narrow it down to the coils, when I disconnect the black/white from the coils to the harness it allows the bike to stay on without blowing the fuse. I checked the coils itself on both the primary and secondary with the multimeter. Everything seems to be in spec. However I did notice...
I've double checked all my wires and no signs of pinches or any bare wire sticking out. I can't figure out another way to diagnose the situation. My thoughts were leading to the charging system, perhaps just change out the regulator and rectifier for a dual solid state rectifier/regulator.
I replaced the old harness and fuse box with new ones but I'm still blowing my 15a main fuse. It mainly occurs when I'm kickstarting the bike and intermittently when i turn the kill switch from off to on position after I turn the key. I checked all my connections and grounds, all seem to be in...
Re adjusted the ignition timing & fixed the wiring for the coils did the trick. Although I'm noticing white smoke from my exhaust pipe and the front portion of the engine close to the exhaust connection. This isn't normal is it?
The coil's are brand new, got them from vintage CB750. I'll probably check out the spark plugs to see if the mixture is too lean or rich then adjust the jets as necessary. Could I just adjust the jets or do I also need to adjust the needle ?
So I recently got my bike up and running, installed a 4 in 1 MAC exhaust system but noticed the overall sound of the bike is more like a Harley rather than a typical Honda CB750. I'm not really familiar to what affects the overall sound of the bike. Could it just be the exhaust system I...
On a 72' CB750, how does one know the oil is getting into the engine. By filling up the oil tank, shouldn't gravity just do most of the work. I only ask this because when I went to pour in new oil in the tank the oil level won't go down.
When I check my primary i get around 4.7 ohms at 200 on both coils. Secondary testing on both coils: Coil 1- 13.90 @20K ohms & Coil 2 - 15.20 @ 20K ohms. Are those readings normal? I guess if I don't get any readings with the resistor caps, it's probably what's causing the problem?
Trying to clean out & refurbish this old carburetor. I'd adjust the floats accordingly to specs but one of either 4 carbs would either not fill, overflow. I can't seem to get the floats at the right height. Would there be another thing causing this occurrence? I was also told by the previous...
I know there's a method of testing the coils without the multimeter but I've heard that there many components that cause an inaccurate diagnosis. So far I did the basic test of starting the bike with the spark plugs off & grounded to the exterior of the engine. So I'd receive at least little to...
So apparently I did need a new battery. The engine finally turns but doesn't fire up. I notice for my ignition switch the bike will only start when the key is on the 1st position rather than the 2nd. It actually turns off when i turn it to the 2nd position. I don't suppose that's normal?
I couldn't help but notice on the service manual it indicates that the starter relay is right where the magnetic switch(solenoid) is. Are they the same thing or completely separate part?
In all honesty nothing really happens when I hit the electric start button. The only feed back I'm getting is that the 4 indicator lights on the dash lights up when I turn the key.
I'm fairly new to this but what exactly do you mean by turning over?
Recently got this 1972 Honda CB750 K2 as a restoration project. Previous owner stated that it hasn't been running for 2 years or so. Compression was good, just about 150-160psi and got a multimeter to check the battery and the ignition coils. They're both good but still can't seem to start or...
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