96 rinker with mercruiser 7.4 hard to start

[Hardrinker232]

Hi I have a 96 rinker with 7.4 and weber carb it is hard to get started when cold when it has been sitting for just a couple of days have to pump throttle once started have to keep throttle at 1/8 throttle to keep it running if I go back to neutral it dies until it's warm checked choke it is closed and opens when warm when it is warm it fires right up any insight would be great thank you

 

[tpenfield]

My older 7.4 would have the fuel drain down from the carburetor after being left for more than a couple of days. It seemed like it took a bit to get the fuel fully primed so that the engine would be happy on its own. you may have a similar problem. not sure what the solution might be, since I just lived with it on my engine. the fuel pump may have something to do with it, or there is a check valve at the fuel tank that may need some attention.

 

[Hardrinker232]

Ok thanks for the reply do you know how th check the check valve on fuel tank

 

[Bondo]

My older 7.4 would have the fuel drain down from the carburetor after being left for more than a couple of days.

Ayuh,.... If ya got an electric fuel pump, you can alter the wirin' to cycle the pump to reprime the carb,....

With a mechanical pump, ya just gotta crank it over on the starter to reprime the carb,....

 

[Hardrinker232]

Can I put a electric fuel pump in line with my mechanical and put on a toggle switch and just run it to prime carb then turn it off will mechanical pump pull through electric one

 

[Hardrinker232]

Electric fuel

Can I add an electric fuel pump inline with my mechanical and put it on a toggle switch so I can use it to fill the float bowls with fuel before starting and then shut it off or will it damage my mechanical

 

[Scott Danforth]

NO

you can use one or the other, however not both

what problem do you have that you believe you need to cobble and hack your fuel system? if your fuel bowls are leaking fuel into the motor, or external to the carb, then rebuild your carb and fix the problem

 

[Hardrinker232]

I'm having a hard time getting it started when it sits for a couple of days have to pump throttle

 

[Bondo]

Ayuh,..... As a Test,..... Next time to the boat, pull the flame arrester off, 'n dump a 1/4 once of clean gas down the throat of the carb, then go to the helm, advance the throttle to Wot, Once, pull back slightly, 'n hit the key,....

If it fires right up,....
As Scott says, Rebuild the carb, it's leakin',....

 

[Bondo]

Can I put a electric fuel pump in line with my mechanical and put on a toggle switch and just run it to prime carb then turn it off will mechanical pump pull through electric one

Ayuh,.... If it worked, it's Unsafe,....

Rebuild the carb,.... Fix the Problem,.....

 

[Bondo]

Ayuh,...... 'n only one thread per problem,......

 

[Hardrinker232]

Ok thanks guys I will try that I appreciate the help