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1992 40hp merc, enrichment system configuration advice.

M

MrTimsmith

New member
I am part way though repairing a 40hp 4cyl mariner magnum 1992.
I have 2 powerheads in my workshop each using a different route for their enritchment during startup. Attached is a diagram from the specific manual which showcases both mnethods clearly. One method goes to the carburetors while the other bypasses the carburetors and feeds directly into the intake vents.

My question then is whether either one of those methods is better or worse than the other and why. I have the option of taking either route and am looking for advice while evaluating my options. Any advice or observations are welcome.

Regards
 

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The latter design should be better, for that's what they went to, right? You might not have the plumbing/ fittings/ etc. for one of those.

Jeff
 
fastjeff said:
The latter design should be better, for that's what they went to, right? You might not have the plumbing/ fittings/ etc. for one of those.

Jeff
Click to expand...

I have 2 powerheads one i picked up for parts and each has one of the 2 methods which was the reason i was investigating them both. Both have all the appropriate fittings plus or minus some hose.

Tim
 
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