Fuel pump wont work.

[Viktorf]

I have a Johnson 4.5 and i recently ordered a kit for my fuel pump. I watched a youtube video on how to assemble it and at the end of the video the guy said that if you blow through the inlet it should make a noise and if you blow through the outlet there should be no air comming out. Well, there is a noise but there is also air comming out the inlet when i blow into the outlet, not alot but… I have tried swapping all the parts and also swapped new ones with old ones to se if i could get it to work. I have probably assembled it about 10-15 times now but there is still air comming out the inlet when i blow into the outlet. Anyone have any experience in this and might know what the problem could be? Thanks.Photo of fuel pump

 

[racerone]

It is very easy to assemble the pump parts incorrectly.----A factory repair kit comes with complete instructions.-----The fuel pump is driven by crankcase compression PRESSURE.-----There may be an issue there.----How did this motor run for you last season ?

 

[Viktorf]

Sadly i have not been the one in posession of the engine so i could not tell you how it has been running prior

 

[racerone]

Not uncommon to get a motor after a previous owner made mistakes.-----A new factory pump is big $$$----An Amazon " special " is an option to at least test run this motor.-------There is very little that can go wrong with these simple pumps.-----I am amazed by how many are sold on the internet !!!