Engine idling quickly only when warm

[jvincig01]

I have about 300 miles on my freshly installed (but not rebuilt) engine. It's been running really well, however, I noticed just recently when i pull up to a stop sign it idles rapidly. It wasnt doing this the other day. If I tap the gas a little, it settles back down to a normal idle.

Any ideas on what might be causing this?

 

[thebigredrocker]

Could be an accelerator cable issue. Make sure you have a tiny amount if slack down by the bellcrank. I had mine just a bit too snug and it acted similar.

How's your return spring.

 

[jvincig01]

Could be an accelerator cable issue. Make sure you have a tiny amount if slack down by the bellcrank. I had mine just a bit too snug and it acted similar.

How's your return spring.

Good idea. I will check the slack. The return spring looks like new.

Could it be a bad PCV valve?

 

[sadam_husain]

If I tap the gas a little, it settles back down to a normal idle.

Could it be a bad PCV valve?

is your PCV valve hooked up to the gas pedal

 

[jvincig01]

is your PCV valve hooked up to the gas pedal

yes

 

[65swb45]

is your PCV valve hooked up to the gas pedal

Funny.

 

[65swb45]

yes

Funnier.

Show us a pic of the return spring install.