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Author Topic: 1989 LT 500 sluggish but clears out on top end  (Read 60 times)

Offline nathangaskin

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1989 LT 500 sluggish but clears out on top end
« on: November 10, 2021, 08:05:38 am »
My 1989 quadzilla starts great, has good compression, new dg exhaust system, but it is sluggish in the lower gears and tries to clear out in the higher gears. I am thinking it is getting too much fuel. It also idles. The only problem is it is lacking power. I am running 93 gas, mixed 40 to 1 with castor 927. Any ideas?

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Offline Holeshot 500

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Re: 1989 LT 500 sluggish but clears out on top end
« Reply #1 on: November 10, 2021, 08:44:34 am »
Did it just start doing this? If so, what have you changed?

Offline nathangaskin

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Re: 1989 LT 500 sluggish but clears out on top end
« Reply #2 on: November 10, 2021, 08:45:56 am »
Nothing, I just bought the 4wheeler. I bought it like this. The guy I got it from told me it has a fresh top end but has been sitting up for a while. He said it ran right when he parked it.

Offline Rainman56

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Re: 1989 LT 500 sluggish but clears out on top end
« Reply #3 on: November 10, 2021, 11:28:06 am »
Nothing, I just bought the 4wheeler. I bought it like this. The guy I got it from told me it has a fresh top end but has been sitting up for a while. He said it ran right when he parked it.

May want to go through the carb to start...May need a cleaning as well as let us know what the jetting is.
Can,t fix stupid.:)

Offline nathangaskin

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Re: 1989 LT 500 sluggish but clears out on top end
« Reply #4 on: November 10, 2021, 11:51:13 am »
That's what I am thinking as well. I had some people try to tell me it was a blown head gasket, but I just dont believe it is.

Offline MD2smoker

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Re: 1989 LT 500 sluggish but clears out on top end
« Reply #5 on: November 17, 2021, 01:27:01 pm »
Were you posting this on FB?  If it was you, You said at that time it had a lot of white smoke...

 

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