1988 70 HP Reed valve question

[sat1962]

Hi im thinking after carb rebuilds and still having same problems if i may
have faulty reed valves .Engine was sitting 8 years could all 3 reed valves be bad what should i look for .I see fuel spitting out of carbs when u crack the throttle .It runs at full throttle evrything else is bad in gear. And if it is reed valves where is good place to get them . Thanks for any advice in advance.

 

[kynolan2183]

Re: 1988 70 HP Reed valve question

My 70 hp does the same thing at specific rpms. I think that it is a frequecy issue with the steel reeds. Others I have talked with on these styles 70s have a specific rpm where theirs do it also.
What are your problems to make you think you need reeds?

Kyle

 

[kynolan2183]

Re: 1988 70 HP Reed valve question

Have you done a link and sync?
Have you set your timing correctly?

 

[sat1962]

Re: 1988 70 HP Reed valve question

yes ive done sync and link and timing my symptoms are wont idle correctly, It sputters at 1000 to 4000 rpms or dies mostly dies and it will run 58oo rpms but then will die there after 2 minutes its frustrating any help appreciated

 

[Timmstng67]

Re: 1988 70 HP Reed valve question

Dose it sound like it is popping/coughing back through the carbs. And did you properly set the floats ?

 

[emdsapmgr]

Re: 1988 70 HP Reed valve question

My 1990 spits a little fuel out of the top carb. Always has. The engine pumps oil/gas up to the top bearing. It is then recirculated back to the intake manifold to the top carb. When the engine runs, the top carb gets a small amount of fuel spit back into the carb throat. This fuel (only) spitting is normal. If you get fuel and air exiting the carbs, you could have a reed issue.