10 Pts to Answer 5.7 4100 WOT

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jeremyhuston

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Jul 27, 2011
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Re: 10 Pts to Answer 5.7 4100 WOT

Ok, I am currently home.. and I just pulled the outdrive off.. I see nothing that even appears to be for exhaust? or where would the flappers be stuck? It looks like my exhaust comes out at the back of the boat on the lower section of the outdrive mounting plate. ? Did i take this outdrive off for no reason? lol.. Gimble bearing feels good on a lighter note. Do i need to replace gasket?
 
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John_S

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Jun 21, 2004
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Re: 10 Pts to Answer 5.7 4100 WOT

jeremyhuston said:
Ok, I am currently home.. and I just pulled the outdrive off.. I see nothing that even appears to be for exhaust? or where would the flappers be stuck? It looks like my exhaust comes out at the back of the boat on the lower section of the outdrive mounting plate. ? Did i take this outdrive off for no reason? lol.. Gimble bearing feels good on a lighter note. Do i need to replace gasket?
Click to expand...

The exhaust is the bottom oblong outlet on #1, bellhousing. Usually stuck behind rod #23. You should be able to inspect the drive, but not sure if that gurrantees that can't be logged further upstream.

4.png


Yes, it needs a new gasket kit which inlcudes new o-rings.

Any water in the u-joint bellows? Should check engine alignment, but you will need the tool for that. Has the impeller been replaced recently? If not, best to do since you have drive off.
 
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jeremyhuston

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Messages
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Re: 10 Pts to Answer 5.7 4100 WOT

I dont see any water.. Gimble feels good. I have not change impeller.. Just got boat.. When my engine is running water comes out behind all this.. down low?
 
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John_S

Rear Admiral
Joined
Jun 21, 2004
Messages
4,269
Re: 10 Pts to Answer 5.7 4100 WOT

jeremyhuston said:
I dont see any water.. Gimble feels good. I have not change impeller.. Just got boat.. When my engine is running water comes out behind all this.. down low?
Click to expand...

When running on muffs, most of the water will come out the exhaust relief ports.

If you don't have record of when previous owner last changed the impeller, might want to do it now. It should be changed every 2-3 years. I use the genuine merc kit, which include housing, carrier seal, etc.

PS: Check u-joints for any slop.
 
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jeremyhuston

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Jul 27, 2011
Messages
26
Re: 10 Pts to Answer 5.7 4100 WOT

U joints actually look new. I dont see any flapper pieces and I can NOT get the elbow off exhaust.. ive pulled till my face hurts.. Where is my 500 RPM? ... Weak coil? Carb not running right?
 
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jeremyhuston

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Joined
Jul 27, 2011
Messages
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Re: 10 Pts to Answer 5.7 4100 WOT

I stuck my vacuum gauge in the fuel line from the Tank.. I removed the anti siphon so it went Carb/water seperator/fuel pump/my gauge.

It gradually pulled 9 in. after revving engine.. ? Weak fuel pump or tested incorrectly?
 
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jeremyhuston

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Joined
Jul 27, 2011
Messages
26
Re: 10 Pts to Answer 5.7 4100 WOT

I dont have a T for tonight so I ended up just filling a gatorade bottle and it did that nicely and quick.. Im at a loss at this point.. ANYONE? weak coil?
 
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