RPMs increase when the engine is idling

CHRISTNEO

MEMBER
1988 NISSAN MICRA
200,000 MILES

Rpm increase at idle.

Sunday, March 20th, 2022 AT 9:48 AM

4 Replies

JACOBANDNICKOLAS

MECHANIC
109,755 POSTS

Hi,

This vehicle isn't offered in the US, but I will try my best to help.

When there are variations in idle speed, the first thing to check for is engine vacuum leaks. Have you done that? If not, start there. Here is a link that shows how to do it:

https://www.2carpros.com/articles/how-to-use-an-engine-vacuum-gauge

If none are found, I need to know if this has a separate fuel injector for each cylinder, one throttle body injector, or if it has a carburetor.

Let me know.

Joe

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Sunday, March 20th, 2022 AT 8:49 PM

CHRISTNEO

MEMBER
12 POSTS

Thanks Joe. I have been away for a while due to some engagement, but I really appreciate your reply. This is no doubt one of the best repair sites I've ever come across. I am now back fully into repair operations and will definitely have a lot to ask from this forum. Thanks

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Thursday, May 5th, 2022 AT 12:57 PM

JACOBANDNICKOLAS

MECHANIC
109,755 POSTS

Hi,

You are very welcome. Let me know what you find or if you have other questions. Also, please feel free to stop anytime. You're always welcome.

I will watch for your reply.

Take care,

Joe

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Thursday, May 5th, 2022 AT 8:17 PM

CHRISTNEO