Question about GMC S-15
Put a carb kit in it, float is probably saturated causing it to run rich all the time.
Posted on Jun 26, 2013
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this 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.
Here's a link to this great service
Posted on Jan 02, 2017
SOURCE: Stalling and black smoke
Your truck is fuel injected . Black smoke indicates a rich fuel mixture. This could be caused by numerous items. A faulty sensor, a faulty injector, a misfiring spark plug are some of them. To really zone in on the problem, a computer diagnosis is required to note sensor readings, and repair as necessary.
Posted on Mar 30, 2009
Sounds like bad injectors, bad O2 sensors, and or too much fuel psi. Check the fuel psi against what the service manual says. If the fuel psi is too high, your regulator is bad. If the fuel psi checks out ok, you likely have a bad O2 or bad fuel injector(s).
Posted on Apr 15, 2009
Take it to an Autozone or O'Reillys and they will test the computer for you. It should have set a code, but you don't know if the code light works so its your best bet. Sounds like it is running rich and the crankshaft module is not advancing the timing.
Posted on May 11, 2009
Search for vacuum leaks. Could be your head gasket, or oil rings. Black smoke = oil is being burned. Which would mean that either your oil rings are worn out (for whatever reason, since your truck is fairly new) or that you have a head gasket problem.
Posted on Jun 04, 2009
Tips for a great answer:
Apr 28, 2014 | 1983 Chevrolet Silverado
Sep 06, 2013 | 1983 Oldsmobile Cutlass Supreme
Sep 05, 2013 | 1983 Oldsmobile Cutlass Supreme
Sep 13, 2011 | 1983 Chevrolet Silverado
Apr 27, 2011 | 1998 GMC Sierra
Dec 05, 2010 | 1983 Ford Fairmont
Jul 04, 2010 | 1993 GMC Sierra K1500
Nov 24, 2009 | 1983 Toyota Pickup
Aug 30, 2009 | 1983 GMC Jimmy
Jul 12, 2009 | 1994 Lincoln Town Car
39 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: