Thread: Rough at idle.
View Single Post
cvriv.charles cvriv.charles is offline
Avatar's are to SMALL.
 
Join Date: Jul 2009
Location: Belvidere, NJ
Posts: 1,051
Send a message via Skype™ to cvriv.charles
Quote:
Originally Posted by mikepellegrini View Post
It does kinda sound like a vacuum leak. But you never know.

How about the engine temp sensor? If that was bad, it could also cause the engine to run rough at idle when cold.

Clark's has got procedures for testing most everything: http://www.clarks-garage.com/shop-manual/elect-19.htm

http://www.clarks-garage.com/shop-manual/ts-01.htm#cold-idle

As to the hoses, I'd just try and tighten every hose clamp that is accessible, at least first.

The balance of the vacuum hoses are under the intake manifold - which is pretty easy to take off.

But what about the more mundane things like your plugs and the rotor and cap? Cleaned and gapped your plugs lately? Doesn't cost anything to do it and it might help.
Well,... the PO said that everything was new and taken care of but to be safe I will start with the simple things first so atleast I know what everything looks like.

I will check clarks-garage out. You know,... I do remember the PO saying something abou the ISV. He said he didnt mount it. That its laying under the intake manifold wrapped in some kind of plastic something. Hmmm. I'll keep you guys posted. Take some pics of everything too.
__________________
1986 951 - Wrecked. Being used for engine swap and parts.
1987 944 - SCCA specification track/ street car. Awaiting 951 engine and parts.
Old 08-15-2009, 10:15 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #3 (permalink)