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Carburetors, Mixers, Fuel Pumps and fuel delivery Discussion about misc. carbs, mixers, fuel pumps, injectors.

Carburetors, Mixers, Fuel Pumps and fuel delivery

4 hp Sparta w/ Lukenheimer


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  #1  
Old 08-11-2017, 01:49:15 PM
HitnMiss Todd HitnMiss Todd is offline
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Default 4 hp Sparta w/ Lukenheimer

I am having problems getting the engine to start and keep running. First problem is the fuel fitting to the mixer. What is the proper fitting for the fuel inlet? It looks like this is a grease cup that was threaded on and a hose slipped over it and then clamped. It does not seal very well and fuel will leak out. If it's leaking I am sure air is entering. When it does start it will only run a few seconds before it starts to die. It did have a check valve at the tank but I removed that per other threads I found on the Stak. No change to the starting or running.
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Old 08-11-2017, 06:05:33 PM
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J Eddy J Eddy is offline
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Default Re: 4 hp Sparta w/ Lukenheimer

Most Lunkenheimer carbs require the fuel tank to be above the carb. The Vaccum valve in carb needs to seal well to keep gas from leaking thru between charges.
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Old 08-11-2017, 07:35:05 PM
HitnMiss Todd HitnMiss Todd is offline
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Default Re: 4 hp Sparta w/ Lukenheimer

This fuel tank is in the base of the engine and the Lunk is close to the same level. In other words, the fuel line is almost level from the bottom of the tank to the inlet of the Lunk.
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Old 09-01-2017, 12:41:49 AM
IronworkerFXR IronworkerFXR is offline
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Default Re: 4 hp Sparta w/ Lukenheimer

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