Nissan 18HP 4-cycle wont run

ericab

Cadet
Joined
May 19, 2008
Messages
6
Still trying to get this new engine running right. First season, wont idle cold, changed auto bi-starter, ok for a short while. Second season, out twice and now will not throttle up but will start and idle. I have rulled out the strainer in the fuel tank, as it acts the same connected or not. The fuel filter looks fine. Not sure about the fuel pump or carb. All linkage works fine. I ordered another bi-starter to try. If that fails, what next ?? Fuel filter ? Fuel Pump ? Pull the carb ? Could it be the control unit ? At witts end.....suggestions anyone ?
 

TOHATSU GURU

Admiral
Joined
Jul 22, 2004
Messages
6,164
Re: Nissan 18HP 4-cycle wont run

Is the engine less than three years old? If so, take it into a dealer and let them repair it. That is what the warranty is for.
 

pvanv

Admiral
Joined
Apr 20, 2008
Messages
6,569
Re: Nissan 18HP 4-cycle wont run

The auto-by-starter unit is for fuel enrichment when cold. Think of it as automatic choke of a sort. Will not cause a high-speed problem. Issue likely with bad gas. Flush fuel system completely, confirm fresh fuel, and if still a problem, use your warranty at the dealer, as Elvin suggested.
 
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