5.0l Thunderbolt Mercruiser

[CELEBRITY 192]

I bought a 1989 celebrity 192 with mercruiser 5.0L thunderbolt v8 2barrel mercruiser carb which was rebuilt, new coil replaced boat runs perfect in driver way or first time you start it in water, once it gets hot, boat is very hard to start, it runs around 140 to 150 degrees on the water temperature, motor idles good, pulls skier good, just dont shut it off, might start, might not any suggestions>

Thanks

 

[BigBK]

Re: 5.0l Thunderbolt Mercruiser

when you try to start after shutting off does it turn over good or does it not even turn over.

 

[deadstick]

Re: 5.0l Thunderbolt Mercruiser

sounds like carb flooding. when you shut engine off look in carb and see if you see fuel dripping in barrel of the carb. you can also try holding throttle wide open when you try to crank, to help with the flooding.

let us know what you find..deadstick

 

[CELEBRITY 192]

Re: 5.0l Thunderbolt Mercruiser

It Turns Over Pretty Good, It Just Acts Like Its Not Getting Any Fire

 

[JustJason]

Re: 5.0l Thunderbolt Mercruiser

check to make sure your choke is all the way open when it is hot. Also take the flame arrestor off, take a quick ride and shut it down and see if the carb is dripping fuel.

 

[deadstick]

Re: 5.0l Thunderbolt Mercruiser

ok, when its starts to crank does it all the sudden crank, like nothing was wrong or does it sputter a couple times when this is happening..

 

[CELEBRITY 192]

Re: 5.0l Thunderbolt Mercruiser

It Just Cranks And Then All Of A Sudden It Will Sputter A Couple Times And Then Fire Up And Run Like New

 

[deadstick]

Re: 5.0l Thunderbolt Mercruiser

what im trying to ask is when it is hot and you are having problems with it cranking. the motor is spining and "bam" it cranks.(like turning on a light switch)

or you spin engine over and it spits or sputters a couple of times, before cranking.

 

[CELEBRITY 192]

Re: 5.0l Thunderbolt Mercruiser

Starts Every Time In The Driver At Home With The Earmuffs On, Its Hard To Answer, It Has Acted Like Both Ways You Described But Mostly Just Turns And Turns Then Sputters Couple Times And Starts

 

[deadstick]

Re: 5.0l Thunderbolt Mercruiser

Starts Every Time In The Driver At Home With The Earmuffs On, Its Hard To Answer, It Has Acted Like Both Ways You Described But Mostly Just Turns And Turns Then Sputters Couple Times And Starts

ok, sorry for any confusion,i would just go back to


just jason
check to make sure your choke is all the way open when it is hot. Also take the flame arrestor off, take a quick ride and shut it down and see if the carb is dripping fuel.

sound like a carb issue

 

[wallyl81]

Re: 5.0l Thunderbolt Mercruiser

Hi, funny thing is I have the same engine on my boat and have exactly the same problem!! Its been driving me insane and have been talking and reading everywhere about it but have not found a solution yet. Tried all the basics, changed spark plugs, leads, starter motor, checked timing etc... but nothing changes!!
At home with ear muffs starts in no time, in water after short use... engine struggles to start!!! turns over fine but takes a long time to start. And only starts if given full throttle!

"Celebrety192" I would love to know if you found a solution!?!?!?!
Or anyone else might know what it is........