What’s the problem?

Re: The answer!

The problem with modern engines is the tight emission control...often the mfrs don't expect you to be able to do much without specialist tools and kit - if then, as often whole modules are needed. Back in the good old days you could do most of it with a few basic tools but times have moved on. I let a Mercury dealer work on my Suzuki and it was a disaster. Take it to an authorised dealer who looks after the locals' engines.
 
Re: The answer!

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My Honda 4 stroke 2.3Hp will only run with the choke fully out, (would hardly run at all until I changed the spark plug) - which was why I was waiting with baited breath.


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Richard, mine did the EXACTLY the same. It was a blocked jet. The jet diameter is only 0.5 mm and plastic so make sure you carefully measure the wire you unblock it with.

I stripped and reassembled it three times but without paying sufficient attention to cleaning and the jet simply blocked again. This confused me because I assumed the jet was now ok. Fourth time lucky and it has been fine since.

This should help. To get at the jet you have to take the top off the carb. The jet is the black plastic thing - pull it out with some small pliers. It's held in by a rubber grommet.

Next time I pass a lawnmower repair shop I'll pick up an in-line fuel filter.
 
Re: The answer!

A gazillion years experience of Jap bike carbs compared with others (Russian, Amal etc) are enough to convince me that 99% of these poor running thing would be carb passages and/or jets blockd with fuel varnish. Run the fuel out when you use the engine, and it won't happen. Fuel that evaporates leaves crud behind. The Japs love getting things "right" and will give you tiny air passages and jets in carbs to get the carburation right, but just the right size to block with varnish.
 
Re: The answer!

sounds like to much oil in the fuel had the same problem loads of times when i just pour the oil in with measuring my engine will only start on choke and run stop it when its warm and it will only start with choke, so put some neat petrol in with your mix and try it .or mix a fresh batch, hope it helps....
 
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Good point. Chuck the fuel and start again. Brother in law did the same last week. He forgot and dosed the petrol twice. Wouldn't start. (Tipped a bit of neat petrol into the air box and it started and ran fine.) But he added more neat petrol to get back to the right ratio once we'd sorted the starting.
 
Re: The answer!

I hope hes not adding fuel to the oil lol, it is a four stroke....
Richard, cleaning the carb IS easy, no worse than cleaning a winch, actually easier... if you have a digi cam, take pics as you go.. no worries..
Joe.
 
Re: The answer!

Further good point. My Bro-in-law has a two-stroke. Best disregard my advice for a Honda. /forums/images/graemlins/smile.gif
 
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