Help please Fuel Throttle UP problem JOHNSON 140 v4

[bushgator]

I just had the carbs rebuilt on my 1984 Johnson 140 V4 crossflo engine .

I go to throttle it up to get er going and it like vibrates and boggs down and wont go into any faster speed than 10 miles an hour , so then thinking we rebuild the fuel filter on it , cause I was at pelican marine and they said a new one for mine was $358.00 .
They did have a rebuild kit for the fuel pump but being he said most people dont have any success in rebuilding them , for the $100.00 was still high to me but if most folks dont have succes in rebuilding them then why do you sell them???.
But anyway I went that route and put er in the water and still we only got fast a bout 2 times the rest of the time it was bogging down and vibratting again,
I am lost please someone give me some input on what to check or what could be the problem. Not only and I disapointed but I cant take another look of the disapointment on my 2 boys face when all this boat can do is idle My direct email is:
DKOCSIS@TAMPABAY.RR.COM

 

[emdsapmgr]

Re: Help please Fuel Throttle UP problem JOHNSON 140 v4

How is the spark? When the enigine would vibrate, did you check all 4 plug wires for spark? Use an inductive timing light to check for spark on each wire. The flashes from the light should show any misfires or nofires.

 

[jonesg]

Re: Help please Fuel Throttle UP problem JOHNSON 140 v4

How did it run before the carb job?
Do as advised, get a cheap timing light at the auto store and check for spark, sounds electrical but you never know til you know.