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1988 suzuki quadrunner will not start

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I have a 1988 Suzuki quadrunner 250 4wd it will run if I pop start it but it will not run if I elec. Start or pull start I repair crab four times I got spark compression is good . When it is running it runs fine but I let the gas go it dies please help thank you

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Since you said you messed with the carb go ahead and do a retune. If you dont know how use youtube. Super easy and might fix your problem. Start at stock settings on the fuel/air and idle.

Or you need to choke it when you start(not sure if you do or not)

Or valves. Which isnt too bad either. Takes a while to adjust them but it isnt too hard.

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