Jonathon Wood
New member
Hi All,
I have been trying to get my 130hp Johnson (model J130CXAOR) going for weeks but can not work out what I'm missing. Firstly I have checked compression all round and its all within 5psi. I have bought & replaced new carb kits and have set floats correctly. I have bought the correct champion plugs for this engine QL82YC and replaced. I had a problem with Spark Which was fixed with a new Powerpack. I have stripped and cleaned the VRO2 pump. I Have put carb Idle screws to stock 2.5 turns out.
The motor Will start for a few seconds and sound great, then it appears to return to low idle and just conk out. I can restart the engine using the primer on the ignition switch and the engine will keep running as long as I keep jabbing the primer solenoid on the ignition switch every few seconds. It makes me think there is a fuel issue? I know the initial high revs are due to fast start advancing the ignition for a few seconds, but wonder if this is a timing issue. This engine is one of a matched pair and the other engine runs ok, I therfore have tried swapping parts over like the vro pump/ primer solenoid pump but still with no improvement. I have noticed that the other engine has orange wax on all the screws that control timing and spark advance but the problem engine has no wax on any screws and I bought the boat with no history. My thoughts are could the symptoms of fuel starvation really be caused by incorrect timing?
I am by no means a mechanic but have used the johnson service manual and Seloc manual with a logical mind to perform basic checks. I even checked the reeds to see if any gaskets or reeds had gone but all were fine?
I bought an Aquasport 250 XF at the end of last year from a guy who had imported it from Florida to the Uk and he had not tried to get these engines running as was just selling on for profit. Before I attempted to start the engines I checked all the Carbs and they were clogged with a green sludgy varnish. My guess is the engines hadn't been run for a while?
Would really appreciate any diagnosis you guys can offer as have run out of idea's and my local Johnson dealer won't even look at it as he only services modern four strokes now?
Regards
Jonathon
I have been trying to get my 130hp Johnson (model J130CXAOR) going for weeks but can not work out what I'm missing. Firstly I have checked compression all round and its all within 5psi. I have bought & replaced new carb kits and have set floats correctly. I have bought the correct champion plugs for this engine QL82YC and replaced. I had a problem with Spark Which was fixed with a new Powerpack. I have stripped and cleaned the VRO2 pump. I Have put carb Idle screws to stock 2.5 turns out.
The motor Will start for a few seconds and sound great, then it appears to return to low idle and just conk out. I can restart the engine using the primer on the ignition switch and the engine will keep running as long as I keep jabbing the primer solenoid on the ignition switch every few seconds. It makes me think there is a fuel issue? I know the initial high revs are due to fast start advancing the ignition for a few seconds, but wonder if this is a timing issue. This engine is one of a matched pair and the other engine runs ok, I therfore have tried swapping parts over like the vro pump/ primer solenoid pump but still with no improvement. I have noticed that the other engine has orange wax on all the screws that control timing and spark advance but the problem engine has no wax on any screws and I bought the boat with no history. My thoughts are could the symptoms of fuel starvation really be caused by incorrect timing?
I am by no means a mechanic but have used the johnson service manual and Seloc manual with a logical mind to perform basic checks. I even checked the reeds to see if any gaskets or reeds had gone but all were fine?
I bought an Aquasport 250 XF at the end of last year from a guy who had imported it from Florida to the Uk and he had not tried to get these engines running as was just selling on for profit. Before I attempted to start the engines I checked all the Carbs and they were clogged with a green sludgy varnish. My guess is the engines hadn't been run for a while?
Would really appreciate any diagnosis you guys can offer as have run out of idea's and my local Johnson dealer won't even look at it as he only services modern four strokes now?
Regards
Jonathon