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Author Topic:   50hp Mariner 4Stroke Starting Problem

srd posted 06-19-2002 03:18 PM ET (US)
I recently repowered my 15' Classic Sport w/ a 95' 50hp Mariner 4 Stroke. It is not fuel injected. I have trouble starting it. After it does start it runs fine. I am told that this motor is subject to vapor lock and that this is the source of my starting problems. I am also told that there is a kit now available to fix this problem. Is this my problem and is there a fix?
Bigshot posted 06-19-2002 04:02 PM ET (US)
Nope!
Vapor lock should normally occur once hot, not cold. It is when the gas boils in the lines or carb before getting into the engine and therefore turns to vapor. This avappor can actually "lock" up an engine so to where it will not turn over once hot.
Your problem sounds like choke is not functioning properly or you have not "become friends" with the starting procedure yet. Some engines like to be started full choke, no gas. Some like no gas, full choke, etc. Make sure you are squeezing the primer bulb. It is stilla carb you know.

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Author	Topic: 50hp Mariner 4Stroke Starting Problem
srd	posted 06-19-2002 03:18 PM ET (US) I recently repowered my 15' Classic Sport w/ a 95' 50hp Mariner 4 Stroke. It is not fuel injected. I have trouble starting it. After it does start it runs fine. I am told that this motor is subject to vapor lock and that this is the source of my starting problems. I am also told that there is a kit now available to fix this problem. Is this my problem and is there a fix?
Bigshot	posted 06-19-2002 04:02 PM ET (US) Nope! Vapor lock should normally occur once hot, not cold. It is when the gas boils in the lines or carb before getting into the engine and therefore turns to vapor. This avappor can actually "lock" up an engine so to where it will not turn over once hot. Your problem sounds like choke is not functioning properly or you have not "become friends" with the starting procedure yet. Some engines like to be started full choke, no gas. Some like no gas, full choke, etc. Make sure you are squeezing the primer bulb. It is stilla carb you know.