Question about 1990 GMC Sierra
After changing plug wires cannot get started. Checked firing order it is alright.Maybe I am In wrong location on cap for #1 wire.
Check for the right location by turning crankshaft till at zero degrees on the pointer scale-the timing scale. Then look at rotor position: should be either pointing to No. 1, or will be pointing directly opposite if you are on the exhaust stroke (TDC) of No. 1. Turn the crank one revolution, and come back to the zero mark. If rotor was pointed opposite before, it should now be directly at the number 1 plug wire tower.
Posted on Jan 03, 2013
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
Well, if it was running prior to your replacing the plugs, then somewhere you went amiss. Check the firing order. If when you crank the engine over and it pops and backfires then you have a few plug wires mixed up. Other than that the other item to check would be the rotor button in side the cap. Is it lined up correctly or broken? Good luck.
Posted on Feb 07, 2009
ok number 1 piston should be a top dead centre & mabe on the top of the cap is a mark or number
if not then there should be a mark on the lip of the dizzy!
if not then just choose one near the front & set the points at that point on the point of sparking! [ready to open points] make sure you have spark or you may have left ou the insulator on the points locating pin!!!
then its a matter of the firing order!
i hope this helps
Posted on Aug 15, 2009
SOURCE: we changed spark plugs &
Here is the firing order diagram for the 5.0 liter (305), 5.7 liter (350) and the 7.4 liter (454) V-8 engines (note position of locking latches/screws between the 3 and 6 and the 1 and 2 terminals on the distributor cap). Let me know if you need the 4.3 liter V-6 engine diagram (hopefully not in a 2500 series truck) or if you require any further assistance.
Posted on Nov 29, 2010
Tips for a great answer:
Feb 10, 2015 | Cars & Trucks
Oct 23, 2013 | 1988 Plymouth Reliant
Jul 01, 2012 | Dodge Cars & Trucks
Apr 10, 2011 | Ford Explorer Cars & Trucks
Apr 21, 2010 | 1993 Mazda MX-6
Mar 27, 2009 | 2001 Dodge Ram 1500 Truck 2WD
Dec 27, 2008 | 2000 Chevrolet Blazer
45 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: