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Old 05-27-2009, 10:46 AM   #1
sickcraft
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Default Engine Replacement ??

I have a friend that has a 1981 EZ-Go 2 cycle which is really bogging down when under load. Flies down the hill but barely makes it back up the street. He has tested out fuel pressure, compression (120) and removed exhaust. He is getting ready to fork over around $300 for someone to rebuild the engine. Does this sound like the engine needs to be rebuilt or is there an engine he could buy to replace it?

You can find cheap 4-cycle engines but since it is a 2-cycle and uses the engine direction for forward and reverse, what are his options?
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Old 05-27-2009, 01:21 PM   #2
ruredy
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Default Re: Engine Replacement ??

If the compression is 120 in both direction I would question having it rebuilt.
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Old 05-27-2009, 03:08 PM   #3
sickcraft
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Default Re: Engine Replacement ??

I was questioning that too. What would be causing the low power problem? What else can be checked?
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Old 05-27-2009, 03:11 PM   #4
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Default Re: Engine Replacement ??

Muffler BBQ?
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Old 05-27-2009, 03:13 PM   #5
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Default Re: Engine Replacement ??

He removed the muffler (loud as crap) but no difference in power.
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Old 05-27-2009, 04:43 PM   #6
ruredy
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Default Re: Engine Replacement ??

seals, bad gasket/s, carb/intake/reed valves, over charging generator, clutches, ect, ect...
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Old 05-27-2009, 04:49 PM   #7
sickcraft
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Default Re: Engine Replacement ??

To prevent him from wasting his money, what can we do to go down through the list to start testing these out to start eliminating the possibilities?

How can you test the clutches? What the heck are reed valves?

Way over our heads but willing to learn. Any help would be greatly appreciated.
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Old 05-28-2009, 09:25 AM   #8
sickcraft
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Default Re: Engine Replacement ??

Ruredy, you were in another discussion that sounds similar to this. http://www.buggiesgonewild.com/gas-e...mpression.html.

How can we blow smoke into it to test?
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Old 05-28-2009, 10:13 AM   #9
EZ-GOnewild
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Default Re: Engine Replacement ??

Quote:
Originally Posted by sickcraft View Post
He removed the muffler (loud as crap) but no difference in power.
2-cycle engines need a muffler. The muffler creates a scavenging affect that draws the spent fuel/oil mix out and helps draw the new fuel/oil mix in. You may have other issues but you really need the muffler.
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Old 05-28-2009, 10:23 AM   #10
bigoldjimbo
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Default Re: Engine Replacement ??

So would it be correct then that if there is no difference in power with muffler on/off that there may be a problem with the muffler? If so, would the BBQ method improve performance or is a new muffler the only option? I'm having similar problems with uphill performance and think that it might be due to the same problem. Thanks.

-jim
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