mariner 150

[SCOTT671]

mariner 150 carbs advice on setting them up
because i have fuel leaking out of the venturie i was wondering what would cause this any info please

thanks
scott

[MrRob]

Gav had a similar problem and it was the floats in the carbs not being setup properly. Simple fix if your names Jono.

[Cyco]

normally means you have some dirt in the float chamber which is not allowing the neadle valve to seat properly.

Strip down the carbs and give them a clean out, remember you are not looking for something that big.

Worth changing the fuel filter at the same time.

[A30]

Originally Posted by Cyco

normally means you have some dirt in the float chamber which is not allowing the needle valve to seat properly.

Strip down the carbs and give them a clean out, remember you are not looking for something that big.

Worth changing the fuel filter at the same time.

a common fault i find is the fuel lines break down and put little bits of rubber on the seats, Give them a good squeeze all over to check for collapsed parts and spray through with carb cleaner onto clean cloth to check for debris.
Then float heights and needle/seat condition.

[SCOTT671]

Originally Posted by A30

a common fault i find is the fuel lines break down and put little bits of rubber on the seats, Give them a good squeeze all over to check for collapsed parts and spray through with carb cleaner onto clean cloth to check for debris.
Then float heights and needle/seat condition.

what am i lookig for ie needle/seat condition?
thanks

scott

[SCOTT671]

dose any one know where i can get a set of needle/seats form?
many thanks

scott

[A30]

Originally Posted by SCOTT671

dose any one know where i can get a set of needle/seats form?
many thanks

scott

Make sure the rubber tits are perfect cone shaped just like Madonna's

Needles available from any Merc dealer or aftermarket suppliers

Quick test for float height invert the carb and float should sit virtually horizontal looking from side on parallel with the bowl mating surface.

[SCOTT671]

Originally Posted by A30

Make sure the rubber tits are perfect cone shaped just like Madonna's

Needles available from any Merc dealer or aftermarket suppliers

Quick test for float height invert the carb and float should sit virtually horizontal looking from side on parallel with the bowl mating surface.

thanks for your help is that when madona was wering the metal cones

scott

[A30]

Originally Posted by SCOTT671

thanks for your help is that when madona was wering the metal cones

scott

Yes but now shes geting a bit old....

[SCOTT671]

yes i agree more like used tea bags

[Techteam]

running an electric fuel pump? what's the pressure? Rubber cones normally last for ages but the plating on the needles can corode and cause them to stick

[SCOTT671]

Originally Posted by Techteam

running an electric fuel pump? what's the pressure? Rubber cones normally last for ages but the plating on the needles can corode and cause them to stick

no not useing electric pump just a primer bulb and origanl diafram pump dont know the pressure but when cranking the motor the fuel pours out of the carbs

many thanks

scott

[Techteam]

Standard setup shouldn't give too much pressure, anyone else had it in bits ? As everybody else suggested first check needles are not stuck, set float heights but also check the kidney shaped gaskets are there around the emulsion tube. If they have baffle plates check to see the rivets have not come loose. Don't use a pop rivet to put them back if they are loose.

[SCOTT671]

Originally Posted by Techteam

Standard setup shouldn't give too much pressure, anyone else had it in bits ? As everybody else suggested first check needles are not stuck, set float heights but also check the kidney shaped gaskets are there around the emulsion tube.

i might jut buy carb/overhaul kits then i know i wont have any problems but they are so f***ing expesive for what they are any sugestions

many thanks

[Techteam]

Depends who's paying I'd have a quick look first before buying a complete overhaul kit at most I've only ever had to change gaskets and the needles never seats.

[SCOTT671]

Originally Posted by Techteam

Depends who's paying I'd have a quick look first before buying a complete overhaul kit at most I've only ever had to change gaskets and the needles never seats.

hi so any ideas where i can just get gaskets and needles without paying for the mortgage on a marine shop

[Techteam]

Engine Number / Year ?

[SCOTT671]

Originally Posted by Techteam

Engine Number / Year ?

5129480 1979 but the carb kits are the same on the 150-200 from 1979-1989

many thanks

scott

[Techteam]

Sierra do a pattern part:

[A30]

Originally Posted by Techteam

Sierra do a pattern part:

Dont think sierra (Keyparts) do just the needles on their own so if thats the case would be cheaper to go genuine

Keyparts no. 01923 276000 http://www.keypart.com/ Speak to Andy

A Merc dealer 01392 316420 http://www.johnbridgermarine.co.uk/ speak to Tony parts