Check valves behind #2&#3 reed assy.

[launchpad_29]

1995 Merc. 75hp serial# 0G271057 Model 1075412RD. I've rebuilt the carbs. and decided to inspect the reed valves. Looking at manual there are 2 check valves behind #2&#3 reeds that are supposed to have nylon balls but there are none. Are these important if so what problems would they cause.

Thanks
Barry

 

[launchpad_29]

Re: Check valves behind #2&#3 reed assy.

This is a parts breakdown #8 is the check valve in question.
Thanks Barry

 

[j_martin]

Re: Check valves behind #2&#3 reed assy.

I see no link or picture related to "This".

If part #6 in this bleed system diagram is what you're referring to, yes it's pretty important.

Missing or defective would cause poor idle.

Bleed System

 

[launchpad_29]

Re: Check valves behind #2&#3 reed assy.

I apologize I left in a hurry this morning. I did put a link in but it looks like it did not show up. I'm learning as I go along, hope all will be patient. Here is the link I hope. The check valves are behind the 2&3 reed assy. Mercury Part#42657A3.
Thanks Barry


www.mercurypartsexpress.com/us/parts-search.html#mr1470ar16040

 

[j_martin]

Re: Check valves behind #2&#3 reed assy.

Where do the lines go to from the check valves?

I would assume they are bleed valves to take puddled fuel from behind the reeds. Very important for idle.

 

[sschefer]

Re: Check valves behind #2&#3 reed assy.

John, these don't have bleed lines like we have on our V-6's. These are actually in the intake manifold and ironically are covered by the gasket. For the life of me I can't figure out how they work but they do. Just leave one out and you'll have a really crappy idle. The 4 cylinder is the same way.

 

[launchpad_29]

Re: Check valves behind #2&#3 reed assy.

I'll purchase 2 new ones and install. Will report later on how she runs.
Thanks again for the help.
Barry