87' Samurai; wont stay running at idle why? will run if I kept throttling! - Suzuki Forums: Suzuki Forum Site
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Old 06-11-2013, 11:49 PM   #1 (permalink)
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Exclamation 87' Samurai; wont stay running at idle why? will run if I kept throttling!

1.3L; NEW=Weber Carb, fuel pump, Sparks kits, dis. cap and good vacuum hose.

i dont understand why; Wont stay running at idle why, will run if I kept throttling!?

help me, thanks.
it's timing belt are bad?

Last edited by NorthernWestern; 06-12-2013 at 12:05 AM.
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Old 06-12-2013, 05:57 PM   #2 (permalink)
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If it was a bad timing belt then it would most likely run bad at any RPM or not at all. What you are describing is probably fuel related.

The weber, as with a lot of carbs, has a separate fuel passage or circuit for idle along with a primary main circuit (first barrel) and a secondary circuit (second barrel). If the fuel mixture is not right in the idle circuit than it may still run when the throttle is open but won't if it is at an idle.

Sense you say it will run at higher throttle openings then I am going to assume that you can get it to start but after it warms up and the choke turns off it will no longer idle. Correct? If so then your idle mixture is most likely to lean or not enough fuel is mixing with the air.

Below the coolant lines for the water choke on the bottom of the carb is a brass screw with a spring under it, turn this screw in until it stops but don't tighten it then turn it back out 2.5 turns, this should get the mixture close enough to idle then adjust it for best idle after the engine has warmed up.
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Old 06-13-2013, 10:54 PM   #3 (permalink)
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i just find it out...clutch adjuster way to tighter. make a higher idle
became shut down.
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