Question about 1992 Chevrolet S-10
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of.(from cars to computers, handyman, and even drones)
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
I have the diagram you need. If you send me your email I will scan it off and send it to you. firstname.lastname@example.org
Posted on Sep 12, 2009
in my experience the usual culprit is the evap cannister. the problem is it gets moisture in it and freezes during winter thus cracking the plastic. if you lay under the car and look at the evap box it black plastic and if you see a loose or cracked hose or the box itself is cracked that is most likely it. as a side note you can check the gas cap and buy a new one to see if that rectifies the situation. lastly i don't think the gas tank should be suspect as you would probably notice if gas was leaking out of the tank. if you take the car to a dealer or shop they can do a smoke test and determine where the leak is.
Posted on Oct 19, 2010
A leak in the EVAP system can be a pain to resolve so be methodical. Start with the junction of the tube from the purge valve to the inlet manifold plenum. Disconnect this tube and block off the exposed port on the manifold. A great way for blocking off tubes and ports is to cut off the fingers of a rubber washing up glove and elastic bands to secure them over the exposed ends.
First let us recap on the system. The
EVAP system passively stores fuel vapour from the fuel tank in a charcoal filled
canister. The canister can be located on the fender or bulkhead. When the engine is running
above idle speed the ECU opens a purge valve connecting a pipe to the
throttle body. A corresponding vent valve allows the
ingress of air into the canister and this encourages fuel vapour to be drawn
out of the canister through the purge valve to the throttle air intake
mixture and thereafter to be burnt. The opening of the
purge valve cycles with engine speed.
The purge valve should be closed during idle. A faulty EVAP system manifest itself as erratic idling as it allows un-metered air into the system and compromises the inlet manifold vacuum. The blocking of the ports as initially suggested above should at least cause any erratic idling to be resolved.
The EVAP system is not critical to engine performance, it is an emission control device, so the car may be run without issue until the fault is found. Look at the fuel cap, ensure that the rubber seal is intact. To make doubly sure give it a smear of grease. Next look at the disconnected 'purge valve to throttle' tube. Inspect it thoroughly for cracks, be quite rough and twist it around to get a good look. Now locate the purge valve. If it is electrically operated simply check for voltage continuity across its connector pins. An open circuit indicates a burnt out solenoid winding. Check the connection to the canister. Check the vent valve connections, and again check its electrical continuity. Check the tank to canister tubing and any connections.
If you find no leaks you may need to take it to a garage that can do a smoke test on the system - this highlights the leaks as wisps of smoke appear where the leaks occur.
Posted on Dec 01, 2010
Tips for a great answer:
May 11, 2016 | Cars & Trucks
Apr 24, 2015 | 2007 Chevrolet Uplander
Nov 22, 2011 | 2005 Toyota Corolla
Sep 23, 2010 | 1998 GMC Jimmy
Aug 16, 2010 | 1994 Dodge Intrepid
Aug 03, 2010 | 2000 Dodge Stratus
Jul 22, 2010 | 1998 Dodge Caravan
Jun 22, 2010 | 1994 Chevrolet S-10
Mar 27, 2010 | 2002 Chrysler Town & Country
Nov 24, 2008 | 1995 Jeep Grand Cherokee
32 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: