I recently aquiried a 1972 18 hp Rude and while waiting for carb rebuild and points parts I had it running decent but rough at low and high idle.
When parts arrived I installed new pionts, set them, also put in new comps , also cut spark plug wire back.
After this it started first pull and idled great but then when I took it out on lake it will not run at more then an idle, as soon as you open throddle it spudders coughs and dies I though it was the carb so I rebuild the carb, checked the spark.( don't have a spark tester but has good strong looking blue spark when I spin by hand). I took it out again yesterday and still did the same thing, I've searched and read tons of post on here and can't find any answers.
Only other thing is that this motor didn't come with a thormostat so it always has water running through it .
Any help would be appreciated
Thanks
When parts arrived I installed new pionts, set them, also put in new comps , also cut spark plug wire back.
After this it started first pull and idled great but then when I took it out on lake it will not run at more then an idle, as soon as you open throddle it spudders coughs and dies I though it was the carb so I rebuild the carb, checked the spark.( don't have a spark tester but has good strong looking blue spark when I spin by hand). I took it out again yesterday and still did the same thing, I've searched and read tons of post on here and can't find any answers.
Only other thing is that this motor didn't come with a thormostat so it always has water running through it .
Any help would be appreciated
Thanks
I would get some J6C plugs. They're hotter than the current J4Cs and will burn the fuel better, especially at lower speeds. Here are some other handy links.