- NEW!
Help answer this question below.
Old School Stock Answer # 3452
You are missing one of three things: fuel, spark, or compression.
Compression is the least likely because you only lose that due to major mechanical failure. This is usually associated with nasty noises, clouds of steam, etc. and you probably would be complaining about that rather than the no-start condition.
You could be missing spark. This is fairly easy to check. While the car is off, pull off one of the spark plug wires. Then hold the metal terminal on the wire with an insulated glove and put it near a metal part on the engine so that it's ALMOST touching. Have someone crank the starter. If you're getting spark, a spark will jump across the gap between the terminal and the engine. If you don't have spark, further diagnosis is required.
You could be missing fuel due to a bad fuel pump or fuel pump relay. One way to check this is to get a rubber or wooden mallet. Have someone crank the starter while you bang on the bottom of the fuel tank with the mallet. Quite often this will get a bad fuel pump to temporarily operate. If it doesn't work, then the problem is more complex.
Good luck.
you need to replace igniton coil.
Where is the body control module on a Silverado?
by Answerbag Staff on August 18th, 2010
| 1 person likes this
Where is the throttle position sensor located in a 2005 Chevy Silverado?
by Answerbag Staff on August 17th, 2010
| 1 person likes this
What is the gas mileage for a 2011 Chevy Silverado 6.0L V8 SFI crew cab 4X4?
by Jeff_J3814 on September 28th, 2011
| 1 person likes this
what size tires would you put on a 2008 BLACK SINGLE CAB SILVERADO Z71 4x4, with a 6 inch Suspension lift?
by myfavcoloriscamo on July 20th, 2011
| 1 person likes this
Where is the 2000 Chevy Silverado knock sensor located?
by Answerbag Staff on August 17th, 2010
| 1 person likes this
You're reading My 1993 silverado will not start cranks over but will not start
Comments
Fuel, spark, compression, timing.
Although a less common cause of no-start conditions than fuel or spark, timing cannot be left out of the equation. The chain could be stretched, a tooth broken off the gear, etc, and would also cause a no-start.
by GingerL on January 14th, 2008
GingerL - On most modern cars, the ignition timing is computer controlled so it usually doesn't get too far out of whack. It could be valve timing but if the timing set is that far gone, it was probably making all sorts of noises prior to this.
by Old School on January 14th, 2008
On modern cars the ignition timing is computer controlled, but that certainly doesn't exclude timing from the equation in a no-start situation. Regardless of how the timing is controlled, timing chains can still stretch and timing gears can still break. Again, as I previously said, timing is not as likely to be the culprit as fuel or spark. If compression warrants mentioning as a possible cause, however, than timing does as well.
by GingerL on January 16th, 2008