Hot Rod Forum : Hotrodders Bulletin Board - View Single Post - Pontiac 400 Idles to fast
View Single Post
  #4 (permalink)  
Old 04-02-2010, 02:26 PM
beertracker beertracker is offline
Registered User
Last photo:
Join Date: Nov 2009
Location: lost in obamaville. delete my hr account
Posts: 441
Wiki Edits: 0

Thanks: 5
Thanked 28 Times in 26 Posts
I am using the two stock return springs that came with the car. I applied hand pressure to the throttle to slow the engine down but it didn't slow down.

I will look for a vacuum leak next. Last Fall the engine always idled around 1000 rpm and I never fixed it. This Spring I had the carburetor off and after I replaced the carburetor I noticed the engine idling at 1500-2000 rpm. So this may be related to vacuum leak. I haven't check the vacuum advance or taken the car for a test drive. It is a automatic trans. The car has power brakes so how can I tell if the booster is leaking? Just do a brake check and see if power brakes work? The booster is original to the car 1970.

Thanks for the ideas.

Reply With Quote