engine accelerates when clutch is pushed in??

1980-1986 Datsun 720 forums. All 720-specific topics and discussion can be found here.
mcdonkey37
Posts: 2
Joined: Sat Nov 07, 2009 6:21 pm
Car: 1984 Nissan 720 2.4 pickup

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Hello,

I have a 1984 nissan 2.4L 720. Recently reconnected the choke thermostat on the carb after buying it from someone, but now the trucks engine is accelerating and climbing high in rpms with the clutch being pushed in. Can anyone help with any knowledge of this problem. I heard that it could be a vaccum leak or the spark plug wires are not matched proplery?? What could be the problem?

thanks for your help


67 411
Posts: 199
Joined: Fri Aug 15, 2008 8:52 am
Car: 1967 datsun 411 sss wagon 1975 datsun 620 king cab 4x4 and a 1971 521

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your idle might be set high, does it idle high when its in neutral?

mcdonkey37
Posts: 2
Joined: Sat Nov 07, 2009 6:21 pm
Car: 1984 Nissan 720 2.4 pickup

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It will idle just fine in neutral.

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PEZi
Posts: 21113
Joined: Thu Dec 11, 2008 8:21 am
Car: Mitsubishi Lancer Evolution IX Mitsubishi Racing Edition
Location: Pikes Peak, CO
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so if its in neutral it idles fine... then the clutch goes in and the idle jumps up?


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