Question about 1995 GMC Suburban
Retarding the timing will cool the combustion which will lower the Hydrocarbon number,it will run bad but after a passed e test put the timing back to an advanced state which may help with the stumble.
Posted on Jul 24, 2017
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
It has to be done with a scanner. You can adjust this distributor, but there are no timing marks to watch as you move it. There is a timing mark on the balancer and on the timing cover for referencing Top Dead Center #1 cylinder only, but it is only used for dropping the distributor in to get the engine up and running. A scanner is needed to properly adjust the timing. Connect the scanner and look for a data parameter labeled ‘cam offset’ or possibly ‘cam ******.’ It will be listed in degrees. Start the engine, and bring it up to 1500 rpm. Note the reading. If the timing specification is not within plus or minus two degrees of zero, you need to move the distributor. You can move the distributor with the engine running but the timing will not change. After you move the distributor, the ignition has to be cycled off to let the computer learn the new timing spec. Restart the engine, bring it up to 1500 rpm and see what the new spec is. You must repeat this procedure until you get the timing into the specification as mentioned above. Once you have it set to spec, the code should clear.
Posted on May 18, 2008
SOURCE: 1995 GMC JIMMY
I had a problem just like that on my blazer and it turned out to be the wire harness on the fuel injectors. It could also be your fuel injectors, had to replce mine at 85000
Posted on Aug 04, 2008
By module do you mean computer? There's nothing wrong with it. Yea, replace all ignition components with new ones. New cap, rotor, wires and spark plugs.
Posted on May 18, 2009
SOURCE: Misfires 96 gmc sierra 5.0
I suggest you have the injectors tested by the dealer, the sludge buildup will not cause a miss fire. to clean the throttle body use carberator spray while holding the engine idle high.
Posted on Aug 05, 2009
SOURCE: fails idle emissions test hc
****** ignition timing....this will lower HC but raise other values during test.
Do you have room to increase other values?
After test return timing to the most advanced position without spark knock under load for best MPG.
Posted on Aug 11, 2009
Tips for a great answer:
Dec 31, 2014 | GMC Cars & Trucks
Dec 26, 2014 | Cars & Trucks
Jan 25, 2014 | 1996 GMC Suburban
Dec 21, 2013 | 1998 GMC Sierra
Mar 25, 2013 | 1993 Chevrolet Suburban
Jan 12, 2011 | 1995 GMC Sierra
Dec 05, 2010 | 1999 GMC Suburban
Mar 04, 2009 | GMC Yukon XL Cars & Trucks
Dec 10, 2008 | 1996 GMC Suburban
52 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: