Another Question
Thread Starter
Racer
Joined: Aug 2005
Posts: 436
Likes: 0
From: milton wi
Another Question
Im new to the vette world so Im asking a million questions. My 87 starts ruff, it fires right up it just idles ruff. I changed the plugs and wires but it didnt help much.Once it warms up it smooths out and runs great. Any ideas?
Race Director
Joined: Aug 2003
Posts: 13,421
Likes: 8
From: Lake Mary Florida
Clean your throttle body and if necessary the IAC valve. Just test the results by opening the butterfly's and giving it a good spray of Throttle Body cleaner. Don't loose the plastic straw. If its real nasty in there back side of plates probably need to remove it and give it a good cleaning. Order new gaskets before hand.
Advanced
Joined: Apr 2005
Posts: 93
Likes: 0
From: Santa Clara CA
How many miles?
Does it smoke at all when you start it?
I'm no pro, but I'd do a compression check and look for consistency across all cylinders. I'd also put a vaccuum guage on and look for a steady needle, probably in the 20" range at idle. Might give you an idea of the conditions in your motor. I'm sure others will correct add more about compression and vaccuum readings.
Does it smoke at all when you start it?
I'm no pro, but I'd do a compression check and look for consistency across all cylinders. I'd also put a vaccuum guage on and look for a steady needle, probably in the 20" range at idle. Might give you an idea of the conditions in your motor. I'm sure others will correct add more about compression and vaccuum readings.
Team Owner
Joined: Dec 2000
Posts: 90,675
Likes: 304
From: SE NY
Cruise-In II Veteran
It sounds like the intake just needs a good cleaning.
If you pull the IAC motor to clean the pintel and it's bore under the TB, there is a method on my site to set base idle and the TPS voltages.
Are you getting any stored trouble codes??
