bastienlaf
Member
Hi Everyone I am new to this forum and I’m looking for help to repair my mercury outboard engine it is a thunderbolt 500 1970. I picked it up in a barn it as not run for about 10 years that my uncle said . First thing I did was I pulled the plug and shoot some lube in all four cylinders and let it sit for a few days before I crank it.Then I pulled in clean both carburetors filled a tank of fresh premium gas And tried to start it. the engine did fire for a few seconds but dies immediately after.
I installed a new fuel pump kit
plugs are brand new
sparks looks good on all plugs
carburators and strainers are clean
i tried to spray some starting fluid in the carb but the engine only fire for one second and does not rune more than that. Tried to spray some fuel in the cylinders but same result.
i’m out of idea now ! I need help i’m pretty new to this kind of mechanic but i’m used to all other small engines
can it be the timing?
can the lower unit affects the engine starting behavior?
can it be realy fouled by all the starting fluid
Sorry for my poor English I’m a french Canadian! doing my best
thanks everyone
I installed a new fuel pump kit
plugs are brand new
sparks looks good on all plugs
carburators and strainers are clean
i tried to spray some starting fluid in the carb but the engine only fire for one second and does not rune more than that. Tried to spray some fuel in the cylinders but same result.
i’m out of idea now ! I need help i’m pretty new to this kind of mechanic but i’m used to all other small engines
can it be the timing?
can the lower unit affects the engine starting behavior?
can it be realy fouled by all the starting fluid
Sorry for my poor English I’m a french Canadian! doing my best
thanks everyone