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sorry but need more info GF all we got is "runs fine then dies and after short time will start" Whats it doing when it goes to die, sputtering? just quits? turn a certain way? throttle up or down? EFI/MPI? the more info you can give the more we can help you ok :-)
Sorry, 1997 Glastron 185 SF with a 4.3 volvo penta motor. The motor has a holley carb. and after first start up will run 5 - 10 min then dies instantly as if a kill switch was ingaged, thats why i think its electrical because as soon as it dies I tried the throttle linkage and had plenty of gas. After sitting for five to ten minutes the motor will start back up but will not run as long as first start up and gets shorter from then on. I am doing all tests on water hose in neutral position.
no problem,now I assume you changed the fuel filter, now I can't remember if there is one on the carb as well where the fuel line goes to,now if those are ok see if the distributor has points if not then I would check the module in the distributor,it's the part that controls spark like the points, I had one that would start and work till it got hot then it would quit, leave it to cool then it would start again, also bypass the kill switch sun and heat will kill those things as well, start there first (cheapest thing to try first) if it was doing it while shifting I would try the shift momentary switch, good luck :-)
Thank you for your time to answer. Do you know if the module has to be marine or can it be auto, or is there a difference. The kill switch can be bypassed, I assume there is no signal going to a computer.
Check the gap of the points against spec ( .018-.020 0r about the thickness of a matchbook is a good starting place--should run at that gap, if not perfect).
Also, I would check for ground--a bad ground on the distributor--but check all ground connections for corrosion and a good mechanical connection.
Kevin
Also note that after you prove the distributor is grounded, check that the plate the points mount to inside the dist is grounded.
My money is with aquatic on a bad (loose) ground.
Kevin
Thanks, my boat does not have points.Myles , was your problem fixed when you changed the module.
Yes it was, now as far as using the car module, I would stick to a marine type one, they are built differently, the other thing to check is the kill switch retainers (red plastic thingies) Sorry I cant remember the proper name for them, what happens over time the sun and weather rots the plastic and they wont hold the kill switch from killing the engine All it takes is a little movement and it will kill it some are really sensitive try that first, the last time I changed one of those spark control modules was years ago good luck :-)
Well i was really hoping for a bad module but it checked out ok.Will check out gas system and kill switch next, if you have any more ideas please let me know.
Gas and kill switch worked fine, did notice that after dying pulled coil wire from distributor and hooked spark plug to it while grounding and had no fire. After sitting several minutes fire would come back and boat would start. Question 1 - Could coil be the problem or does something else control fire to coil other then purple wire from ignition, witch test hot with test light when turning key switch on and off. Any advise will be greatly appreciated. Question 2 - Has anyone ever heard of coil getting hot and killing engine, then cooling down and engine starting back up.
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