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WD-45 running rough

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C. McGuire

09-16-1999 17:49:38




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Durring the summer my WD-45 started running rough, like it was missing or about to run out of gas. I found that there was a slight plug in the fuel line which I cleared out. The problem is, I still can't smooth out the idle. The best way I can describe it is pulsating. I've fooled around with the carburetor but couldn't really tell any difference no matter what I did. I've also noticed that if the gas isn't turned off the carburetor will drip some gas, meaning the float needs adjustment. Could it now be getting too much gas while running?

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moboy

09-17-1999 10:19:04




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 Re: WD-45 running rough in reply to C. McGuire, 09-16-1999 17:49:38  
i'd suspect the timing could be off one way or the other



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GeneD14

09-17-1999 05:36:43




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 Re: WD-45 running rough in reply to C. McGuire, 09-16-1999 17:49:38  
It sounds like a fuel system problem. I would check the following:
1.Make sure the gas cap is vented
2.make sure that the tank bottom doesn't have any sediment. 3.Clean sediment bowl and screen.
4.Make sure good flow of gas comes through line to carb. Also make sure choke is opening and chosing properly,and air cleaner isn't plugged.
5.If tractor still runs rough remove carb.
6.Clean inside,jets,needles,etc.... with carb spray.
7.Inspect float and needle valve for proper operation. Float may need adjusting or waterlogged, needle may be sticking, an orfice may be plugged with dirt.)
8.Check for leaks in the intake manifold.

If you don't feel comfortable working on the carb yourself a local shop will usually do it for $25 or so. Good Luck!

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Rob in MO

09-17-1999 16:56:59




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 Re: Re: WD-45 running rough in reply to GeneD14, 09-17-1999 05:36:43  
Since the intake manifold is suspect, here's what I would do. Turn your gas off, and run any existing gas out of your carb/engine. Spray ether around you intake manifold and try to start it. If it fires at all on the ether and NOT GAS, it leaks there, otherwise, the electric stuff should be next. Start at the battery and use the tester at every junction. If it all lights, then it's a fuel supply problem, and you should check that. I know it sounds elementary, but you have to eliminate all the factors one by one to find the cause.

Best wishes,
RC

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Brian G.

09-18-1999 06:01:03




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 Re: Re: Re: WD-45 running rough in reply to Rob in MO, 09-17-1999 16:56:59  
Since you say "adjusting" the carb didn't seem to make any difference and the carb drips gas, I would say you definitely need to take the carb apart and clean everything thoroughly. A carb kit costs only $12 to $15. I recently "redid" a carb on a WD-45 by simply dismantling it, cleaning all parts and orifices with carb spray and air. I put it back together using all the original parts including the gasket and it runs like new. Have fun!

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George Schmidt

10-09-1999 20:53:25




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 Re: Re: Re: Re: WD-45 running rough in reply to Brian G., 09-18-1999 06:01:03  
Check the intake manifold to see if it is leaking air. This will cause the engine to run too lean and run rough just like if it wasn't getting enough gas. Several years ago my WD45 was running rough and I couldn't find the problem. Just as an after thought one day, as I was looking at the engine wondering what to try next, I decided to check the manifold bolts. They were pretty loose and as I tightenend them down the rough running ( like it was missing) went away. Some time later I had to replace the manifold because it had gotten so rusty that it was not seeating on the gaskets very good any more.

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