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Small Air Cooled Gasoline Engines

8 HP Briggs & Stratton Start Problem


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  #1  
Old 04-10-2011, 05:51:06 PM
Paso One Paso One is offline
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Default 8 HP Briggs & Stratton Start Problem

I have two identical engines on 3 inch trash pumps. model #'s
195432-0132
The one starts with a few pulls sometime just one.
The other one I can not get to fire, spurt puff,
What is a common problem when they do this???
Before I pull the non start unit apart please direct me where i should start.
Both carbs have new kits installed and set up identically.

I thought of transfering over the components till i solved it but surely this is common, and not everyone have the luxury of two motors sitting side by side.
Please give me your thoughts thanks
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Old 04-10-2011, 06:40:51 PM
RSCurtis RSCurtis is offline
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Default Re: 8 HP Briggs & Stratton Start problem

Could be a compression problem. Add some oil to the cylinder and see what happens. If that is their Industrial Plus engine and it's on a trash pump, that's the worst combination you can possibly have. That was not a long-lived engine, and a continuous load like a pump or leaf blower is even worse. Set the speed so that the throttle plate is not more than half open at load, and you will get a lot more life from the engine.
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Old 04-10-2011, 07:07:21 PM
Bill Sherlock Bill Sherlock is offline
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Default Re: 8 HP Briggs & Stratton Start problem

First thing I'm going to ask is did these engines sit for a period of time with ethanol gas in the tanks? If so, good chance a passage or two in the carb could be plugged with corrosion due to the ethanol. Have you tried removing the air cleaner and spraying a carb cleaner, like Carb Medic, into the carb and then trying to start it? If it starts and runs on the carb cleaner, then you know there's a problem with the carb. In that case I recommend you soak the carb in CLR for several hours or overnight and rinse with water and blow out all the passages with compressed air. Follow that by spraying the carb with Carb Medic or similar carb cleaner.

Bill
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Old 04-10-2011, 09:19:26 PM
Paso One Paso One is offline
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Default Re: 8 HP Briggs & Stratton Start problem

I have run one of the two engines this spring for about 30 hours and it runs strong and pumps steady.

The second one Is the problem, I will try the fuel down the carb, see if she will run.

Because these are twins ( look identical ) I can't remember which one gave me problems before.

I hope its not a compression problem I checked with my thumb, but not a gauge.

I got a feeling its a carb problem only because that is the only problems I have had in the past,

I'll check further.

Thanks
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Old 04-10-2011, 10:19:31 PM
Paso One Paso One is offline
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Default Re: 8 HP Briggs & Stratton Start problem

okay thanks guys i should have thought to bypass the carb right away,
I pulled the spark plug put a teaspoon full of gas right into the cylinder it fired right up first pull, quit right away but fired and ran for two seconds
I think I have a spare Carb laying around on an old engine I'll swap it out while I check the one that is on it now, to see if it run with another carb.

Thanks
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Old 04-11-2011, 04:59:44 PM
Paso One Paso One is offline
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Default Re: 8 HP Briggs & Stratton Start problem

Update update........ I took the carb off that i know had a recent kit installed, and was cleaned in carb cleaner and..... installed this old carb that i picked up at the recycler that someone thru out and..... voila it fired right up and ran like a charm..... So.... I must have something wrong inside the carb that prevents the fuel from getting sucked up to the combustion chamber..... This is real fustrating if you saw the two carbs together you'd never have installed the one i did
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  #7  
Old 04-11-2011, 07:08:26 PM
Bill Sherlock Bill Sherlock is offline
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Default Re: 8 HP Briggs & Stratton Start problem

From my experience I've found that regular carb cleaners will not have the desired effect on carbs fouled due to ethanol gas, as they are designed to work on petroleum based deposits. That's why I recommend soaking the carb parts in CLR.

Bill
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Old 04-12-2011, 10:09:56 AM
Paso One Paso One is offline
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Default Re: 8 HP Briggs & Stratton Start problem

Thanks Bill I will take apart the carb and soak it in CLR I have never heard of that before.
Thanks for your answers
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Old 04-16-2011, 01:55:06 PM
ronny p 148 ronny p 148 is offline
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Default Re: 8 HP Briggs & Stratton Start problem

Do whatBill says he helped me get my Clinton going with CLR took a 6 hour soak the second time.

Ronny
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Old 04-16-2011, 11:43:42 PM
Paso One Paso One is offline
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Default Re: 8 HP Briggs & Stratton Start problem

I took the carb apart and soaked it for 4 hours in CLR. It did a nice job cleaning the metal up I sure the passages if clogged are good to go.
One observation I made is this Carb had the new shorter needle and seat with the vitron seal on the bottom of the seat. Wonder if that had any adverse effect on the operation. Any comments on that type of needle and seat???
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Old 04-17-2011, 07:56:49 PM
K D Redd K D Redd is offline
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Default Re: 8 HP Briggs & Stratton Start Problem

Are you saying the needle has a Viton tip plus there is a rubber seat in the upper body of the carb? If so this is the problem. If the needle had the Viton tip you use nothing in the upper body of the carb. If you use the rubber seat in the upper body, you use a metal only needle.

Kent
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Old 04-17-2011, 08:10:58 PM
Paso One Paso One is offline
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Default Re: 8 HP Briggs & Stratton Start Problem

Thanks Kent Yes that is the way it was when I took it apart. The needle with the viton tip was sitting on the little green seatin the upper body. The other carb had longer metal needle and no rubber seat . Perhaps i should take the carb apart and remove the rubber piece. What about the shorter viton tip needle?? Should I get the longer needle?
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