Hello everyone. Much obliged for all the information that I have read on the forum.
1988 Invader MCM 200, (or 305). Purchased in July. Ran it for an hour the day we bought it and ran it even more since then.
I've had to fix a few things, but mostly we put gas in it and went.
2 outings ago, the RPM from WOT slowly dropped. At first I thought of something electrical because the lights dimmed a little, but i was messing with the trim to get the top speed back.
The same thing happened during the last outing but was a little more severe the longer I stayed in the throttle. Ease off the throttle, she just kept on running.
I am replacing both the water separator and the filter in the carb, but I suspect that I have something more sinister lurking in the depths of my carb or fuel pump that are going to leave me calling for a tow.
I've read that a failing anti siphoning valve can cause my symptoms, but I also know if fuel flow is restricted the same thing can happen, or if there are clogged main jets in the carb.
Additional info: It can and does run at WOT. I do have to apply the throttle when I start the engine when it is warm. So far it has always started and always run and there has never been any sputtering or back firing, it starts and goes, idles fine and planes off fine.
Anything I am overlooking?
1988 Invader MCM 200, (or 305). Purchased in July. Ran it for an hour the day we bought it and ran it even more since then.
I've had to fix a few things, but mostly we put gas in it and went.
2 outings ago, the RPM from WOT slowly dropped. At first I thought of something electrical because the lights dimmed a little, but i was messing with the trim to get the top speed back.
The same thing happened during the last outing but was a little more severe the longer I stayed in the throttle. Ease off the throttle, she just kept on running.
I am replacing both the water separator and the filter in the carb, but I suspect that I have something more sinister lurking in the depths of my carb or fuel pump that are going to leave me calling for a tow.
I've read that a failing anti siphoning valve can cause my symptoms, but I also know if fuel flow is restricted the same thing can happen, or if there are clogged main jets in the carb.
Additional info: It can and does run at WOT. I do have to apply the throttle when I start the engine when it is warm. So far it has always started and always run and there has never been any sputtering or back firing, it starts and goes, idles fine and planes off fine.
Anything I am overlooking?
