Engine Trouble Idle problems please

[wan37]

I have a Z80 kit.It will fire right up but no idle it either revs real high or dies,it won't idle for nothing,it's a nt carb. Plus no mid range or wot when clutch is released.Please tell me where to start to solve this issue.I know the throttle slide is in there right.It could be a air leak but it won't idle low enough to check it.Thanks a bunch.

 

[The_Aleman]

It's most likely an air leak. These can be tough to get sealed. The split in the clamp that attaches the carb to the intake is usually the culprit.

 

[wan37]

Thanks AL ,I got and o ring in it.I guess I will use some seal all in it.Would it cause no power in the carb.I can get it to go but it take a real long time to build speed.I wish it just would idle right then I could fine tune it.

 

[vermhot]

You could have a bad crank seal or blown head or base gasket or even your intake gasket is leaking !!!!!!

 

[V 35]

One way to isolate air leaks, is to wet down the manifold, than try the engine. If the engine speeds up, water is sealing the leak.