Evan629
ArboristSite Operative
hi i have a problem with an 8hp engine on a small chipper shredder. the engine will only run with partial choke on, and now the engine wont run for more than 4 seconds. please try to help me find my problem. thanks
small engine problem
- Thread starter Evan629
- Start date
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Frank Boyer
Addicted to ArboristSite
It is running lean. Vacuum leak, plugged fuel supply, dirty carb jet are a couple of possibilities. Is the carb loose on it mounting?
Simonizer
Addicted to ArboristSite
You have a plugged main jet in your carburetor. Remove the float bowl and you will likely see green stuff or debris. Depending on the engine, you will not have to remove the carb to get to the problem. Clean bowl, clean main jet, and Bob's your uncle.
Evan629
ArboristSite Operative
where is the main jet
Frank Boyer
Addicted to ArboristSite
It is at the end of the screw that adjusts the high speed mixture. The pointed end of the screw goes into the high speed jet.
hornett22
Addicted to ArboristSite
sounds like a dirty carb.
i'd rebuild it and replace gas with new.replace filter and check any fuel lines if you have them.
i'd rebuild it and replace gas with new.replace filter and check any fuel lines if you have them.
Evan629
ArboristSite Operative
i took the float out and blasted out the jets with my air compressor, it runs better but still needs choke
OLD CHIPMONK
ArboristSite Guru
If it's an old 8 hp. briggs & straton you have a fuel pump diaphram on the side of fuel intake manifold. Remove the 4 screws, pull off the plate (carefully ) and replace the fuel pump diaphram. Ajust the carb at 1&1/4 to 1 &1/2 turns out from seat , it should solve your problem.
joecool85
Addicted to ArboristSite
Is it a tecumseh? If it is then you need to take the brass bolt that holds the fuel bowl off, and clean the holes in it. One of them will be about the size of a piece of 16-18 guage wire. With that hole plugged it will be hard to keep the engine running for more than a few seconds (without choke anyway).
Evan629
ArboristSite Operative
i took it apart and cleaned it, it still ran on choke but the i tuned it and it runs with out the choke.
