1983 Johnson 9.9 fuel pump blow test question

[JCCinOhio]

I bought a motor & boat..Motor had a few issues and wouldn't start so figured I'd rebuild the fuel pump (and carb) while I was waiting on other parts. Pretty sure I put it back together correctly with a Sierra kit. I can blow through the inlet, and not through the outlet, but it's pretty hard to blow through it. I saw someone say air should 'freely' flow and it's definitely not 'freely'.. Actually sounds a bit like a kazoo. Is that still ok? Or does it need to be very freely?

 

[oldboat1]

Just fyi, I bought a couple of $20-$25 pump knock-offs for my '83, and have had no issues for about a year with the one installed. It sounds like you have an assembly issue -- could install it and try it or check assembly first.

 

[Vic.S]

There may be some helpful tips in LeeRoy's ramblings

http://leeroysramblings.com/Outboard...0articles.html

but the actual instructions are from the OMC repair kit

 

[JCCinOhio]

I took pics every step along the way on original disassembly, and I know the boat ran last time it was used. So pretty safe assumption that the pump was in its functioning build.

I used Leeroy's ramblings photos when I did the tear down and assembly with new parts.. Everything looks like it did in the original pics. Just to check, I tore it down and put it back together again. Same deal, takes a bit of pressure to blow through.

I can't just blow though it, I have to give it quite a bit of pressure like when you're first blowing up a balloon. And it makes a noise kind of like a seal (the animal). Is that the normal pressure it needs? I guess the valve housing could be bad, but the springs (with caps) move easily and I blew them out with compressed air. Rather not spend $25 if I don't have to on a new pump if this one works, especially after buying the repair kit.

Had to order a new crankshaft seal, fuel hoses, and more so engine is apart and can't test the pump on the motor till later. So trying to determine if I have the right level of blow...