AQ131 not starting

BassnTruck

Cadet
Joined
Mar 15, 2009
Messages
26
OK I will make a long story short.

Motor has not been run in 10 month since it was winterized. It could not be started because the oil pan needed replaced. Just got that done. The motor turns over fine. Was hoping it was a fuel issue but I checked for a spark at the cap and got none. This was reinforced by it not firing with starting fluid. I have the owners manual off Volvo's website. It is for the AQ131, AQ151, and AQ171. The 131 and 151 wiring diagram looks to use a points system but the 171 has a electronic ignition system. The reason I bring this up is that this 131 has what looks to be the ignition module on the motor with the same number of wire that goes into it on the diagram (it is not part of the coil like is seems on the manual though) and I do not recall seeing any wires coming out of the distributor. So I am thinking some has put the electronic ignition on this motor.

Now I am getting 8v at the coil with the key on. The module has a 12v constant on it and gets the same 8v when the key is on on another pin in its plug. I have not looked for the pick up sensor yet.

It is getting air and it is getting fuel (starter fluid at least) so that only leaves lack of spark for a failure to fire.

Is there anything else I need the check to see why it is not getting any spark. Unless some fool stole my rotor (humm will have to go check that as it could be) But assuming it has a rotor what am I missing?
 

chaparall villain 2

Petty Officer 2nd Class
Joined
Jul 15, 2010
Messages
129
Re: AQ131 not starting

the aq131 i was working on just recently had a points ignition system one wire from negative of coil to points and another to the tach from negative side coil was on back of motor in center and even if the retrofitted the distributor with electronic conversion it would still have a coil .. the voltage at coil should be 12 at starting then down after started .... i dont know for sure if it is supposed to stay 12v with electronic but i would open distributor and look to see what they have check the points and maybe pull the number one plug wire and connect it to a spare plug then have someone turn the engine over while you ground plug to motor ... also i would check the lanyard switch and make sure its fully engaged ... if not it wont run .... good luck
 

BassnTruck

Cadet
Joined
Mar 15, 2009
Messages
26
Re: AQ131 not starting

The coil should only see 12v at start. It has a coil I was just saying in the manual it looks like the coil is part of the module but that is not my case. I did attempt to ground the #1 hole out of the cap but got no spark. I will go up tomorrow and see if I have a rotor as I have a sneaking suspicion it is missing. There is no safety on this boat.

Thanks though.
 
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