just purchased a 150 ox66. alarm is on when key is turned on and doesn't go off. engine is defaulting to limp mode. Not a temp sensor as I disconnected them and as well the engine was cold. Looked at wiring diagram for 703 controls and the pink wire from the alarm buzzer activates alarm when it goes to ground. Pink wire goes directly to the cdi with no splices. Do the other pink wires to the theremo switches, TPS, and air pressure sensor also act as a ground? ie, are they all on one circuit?
Primer bulb goes tight so I guess the fuel pump diaphragms are good.
I try the engine in neutral and it seems to rev and stay at higher than 2000rpms as long as I hold it but when I put it in forward, it will originally start to increase rpm but probably only reaches 4000 before the engine cuts back about 3 times until it is only at approx. 2000. I don't have an rpm gauge but I think I am pretty close to what I am saying. I haven't cleaned out the VST but would this give an alarm when engine isn't even running???
I can start the engine, unplug the controls, and after a minute or so can plug controls back in and alarm is off, but engine still defaults to limp mode.
How does the throttle position sensor affect this engine? is it only used to meter the fuel? I don't have the remote oil tank or engine mounted tank in use as previous owner mixed gas. right now I will mix gas until I get all the parts to switch back to oil injection. Got a really good deal on engine and figure that I will spend way less over all than cost of a new 4 stroke even with high fuel consumption. Compression is between 110 and 115 on all cylinders as well.
Not sure what else I can add but any help would be appreciated. Thanks.
Primer bulb goes tight so I guess the fuel pump diaphragms are good.
I try the engine in neutral and it seems to rev and stay at higher than 2000rpms as long as I hold it but when I put it in forward, it will originally start to increase rpm but probably only reaches 4000 before the engine cuts back about 3 times until it is only at approx. 2000. I don't have an rpm gauge but I think I am pretty close to what I am saying. I haven't cleaned out the VST but would this give an alarm when engine isn't even running???
I can start the engine, unplug the controls, and after a minute or so can plug controls back in and alarm is off, but engine still defaults to limp mode.
How does the throttle position sensor affect this engine? is it only used to meter the fuel? I don't have the remote oil tank or engine mounted tank in use as previous owner mixed gas. right now I will mix gas until I get all the parts to switch back to oil injection. Got a really good deal on engine and figure that I will spend way less over all than cost of a new 4 stroke even with high fuel consumption. Compression is between 110 and 115 on all cylinders as well.
Not sure what else I can add but any help would be appreciated. Thanks.
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