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I have a robin 18 hp engine that ran poor progressively until…

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I have a robin 18...
I have a robin 18 hp engine that ran poor progressively until dying. Engine will start for about a second. Replaced plugs and fuel filter still will not start. Have always had to use starting fluid to start when it dud ran. Engine seems unaffected by staring fluid now. Any ideas?
Submitted: 3 years ago.Category: Small Engine
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Answered in 49 minutes by:
7/6/2015
Technician: Curtis B., Technician replied 3 years ago
Curtis B.
Curtis B., Technician
Category: Small Engine
Satisfied Customers: 31,895
Experience: have worked on and around most engine models for 35 yrs./Polaris ATV expert
Verified
Welcome to JUST ANSWER small engines, let me try to help you !! How many hours on the engine? Have you checked fuel supply to the carburetor? Has the carburetor been cleaned? Has compression been checked? Have the valves been adjusted?
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Customer reply replied 3 years ago
I would estimate about 300 hours on engine. I believe fuel is getting to the carburetor however it has never been cleaned. Compression or valves never checked.
Technician: Curtis B., Technician replied 3 years ago
I would start with fuel to carb., then clean carb.
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Customer reply replied 3 years ago
How best to clean the carb? I assume removing the the carb and taking to a shop is the best approach? Is there a method for cleaning in place?
Technician: Curtis B., Technician replied 3 years ago
Just remove the float bowl on the bottom of the carburetor and use spray carburetor cleaner to clean the bowl, the bowl bolt, and the center passage in the carburetor, and the passage with the needle valve in it. Here is a basic carburetor link, your's will be similar! ----------------------------------------------------------http://outdoorpowerinfo.com/repairs/subaru_robin_v-twin_nikki_carb.asp
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Technician: Curtis B., Technician replied 3 years ago
http://outdoorpowerinfo.com/repairs/subaru_robin_v-twin_nikki_carb.asp
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Customer reply replied 3 years ago
No luck so far. I removed carburetor and cleaned. Replaced spark plugs and verified spark. Replaced fuel filter and filled with new gas. Engine will still not start. Engine has about 350 hours on it. Does engine need replacement?
Technician: Curtis B., Technician replied 3 years ago
What is the compression? With it having starting issue, it may be low on compression, and needs repair or replacement. Needs to be above 80 psi.
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