littlelegs wrote on 12/31/69 at 16:00:02:hi greg cheers f ya message. sometimes when u try and start it u just get a click. starter motor has bin checked out and that is ok. i think that relay operates the starter and decompression valve.if u have any ideas on problem?
I always ask some kind of oblique question when one of the topics comes up, just to get more info.
Okay. Well, since it is a "click" that you hear, I am inclined to believe that the starter solenoid is working. But the question remains, what click do you hear?. There will be 2 clicks if the starter button is pressed, but if everything is functioning as it should you won't hear the second one as easily because of starter noise.
The first click is normally the decompression solenoid, and the second is the starter solenoid. Do you have the tank removed? Can you operate the starter button and confirm that the decomp solenoid is moving for the first click?
This process is controlled by the decompression module which is right above the carb. A short period after (I don't remember how long) the decomp solenoid operates, the starter relay is energized on the Y/B and B/W wires. Do you have a meter to check for 12V on those wires from the Decomp module to the relay when the button is pressed?
Have you also tried to BRIEFLY short the 2 large posts on the starter relay? That would confirm that the starter circuit is good. Just be careful not to short the positive to the frame or you might blow a fuse.
Additionally. You don't want to be fooled by a failed battery. On a rare occasion, the battery can show 12 V but still not have the load capacity to turn the starter. This can happen with a failed grid within the battery. So before you buy something, you may want to have the battery load tested.
I think this process should determine if it is the Decomp module of the Starter Relay.