Surging Honda GX390 problem

[Marcus]

I suspect this to be a carburator problem but it does not always occur except when I need it at a customer's house.

The symptoms also vary.

One time I started the engine at high rpm. The engine surged and everntually died. After playing with it I found that if I turned the throttle down below hal way it would run.

I did not notice anything abnormal when I rebuilt the carburator.

Another time it would not start.

Another time i ran fine...

 

[Sirocco Jerry]

I'm betting on water in the fuel,
or a gasket is sucking air on the engine side of the carb.

 

[Connor]

I was having problems last yr with my GX390 running properly, Just got a new carb for around 20 bucks, easy fix

http://www.watercannon.com/pc-2217-...ly-aftermarket-gx-honda-parts-gx-160-390.aspx


I also use carb cleaner and change my spark plug often, to keep it running top notch.

 

[JMooney]

I agree, replace the carb.

http://cgi.ebay.com/CARBURETOR-HOND...tem&pt=LH_DefaultDomain_0&hash=item3cad64eaea

 

[scottwash]

I would try to clean out the jets

 

[IndyExterior]

I'd post it under Russ Johnson's professor area and get an answer from someone that deals with this on a daily basis. Or call him.

 

[Marcus]

Thanks for all of the ideas. I too think that it is a carburator issue. Thank God I have a backup power washer mounted on my trailer that I have used all week because I have been too busy to fix the bad carb. I appreciate the link to the carbs at Water Cannon. They are the cheapest distributor I have found. I will keep everyone abreast of what happens after I try to fix it tomorrow. Once again Thanks. Hope to see you at the Florida Round Table July 30 - 31.

 

[Russ Johnson]

Have you double checked the oil level? If it's borderline, it may start and run, then shut down. At half throttle, it wouldn't splash as much oil out of the bottom of the crankcase, allowing the low oil switch to stay engaged.

 

[SevnDusty]

I would check the jet under the bolt that holds the bowl in.. use a good ole flathead and unscrew it n clean it out.. that always makes em barely run!

 

[Ron Musgraves]

Thanks for all of the ideas. I too think that it is a carburator issue. Thank God I have a backup power washer mounted on my trailer that I have used all week because I have been too busy to fix the bad carb. I appreciate the link to the carbs at Water Cannon. They are the cheapest distributor I have found. I will keep everyone abreast of what happens after I try to fix it tomorrow. Once again Thanks. Hope to see you at the Florida Round Table July 30 - 31.

Did you get it fixed Marcus?