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Unread 09-08-2019, 10:22 AM   #1
Not Yet Wild
 
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Default EZGO TXT 2008 Gas Performance issues

I have a 2008 EZGO cart equipped with a Subaru 2 cylinder engine. About 4 months ago it began running rough and fouling the plugs and eventually quit running. Suspecting bad gas I proceeded to flush the gas tank, replaced the fuel lines, filter , carburetor, air filter and plugs. The cart now runs rough for several minutes then lose's all power and stops. I checked the compression and it appears fine reading 160 on both cylinders. I removed the drive belt and it seems to run fine accerates and doesn't seem to hurt for power. As soon I put the belt back on it still performs as before, running for a short time before losing all power. The plugs foul collecting carbon which when cleaned and put back in allow it to operate for a short time before returning to its loss of power etc. To me it seems to be connected to it operating under load but I'm at a loss as to how to fix problem. Any help would be greatly appreciated. Dave
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Unread 09-08-2019, 12:05 PM   #2
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Default Re: EZGO TXT 2008 Gas Performance issues

Have you adjusted the valves? not saying that's the issue but you should rule it out.
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Unread Yesterday, 12:36 PM   #3
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Default Re: EZGO TXT 2008 Gas Performance issues

I was under the impression there would be issues with the compression if the valves were out of adjustment. I did check and they are fine. Thanks for the input.
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Unread Yesterday, 12:50 PM   #4
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Default Re: EZGO TXT 2008 Gas Performance issues

Tight valves can affect compression. loose valves won't hurt compression, they just don't open at the same time, and stay open as long as they should. intake valves are common to wear on these motors, which would create a "loose" situation. IF there's noticeably more threads showing on the intake valves than the 2 outside exhaust valves, they're worn and should be replaced.

Also, maybe a failing ignition coil? What color is your spark? bright and blue or yellowish? Did you check spark on both cylinders? These engines *can* run on 1 cylinder, but they'll fall flat on their face and lose power as you describe.

grab a spare spark plug. Run it until it gets warmed up and falls on its face, pull a plug wire and stick in your spare plug and check the spark to see what it looks like (on both cylinders).
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Unread Yesterday, 12:51 PM   #5
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Default Re: EZGO TXT 2008 Gas Performance issues

And don't trust the "in line spark testers". They're junk and give very misleading results. They'll tell you that you "have" spark, but it won't tell you if the spark is enough to jump the gap of the plug, or if it's hot enough of a spark to ignite the fuel mixture.
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