FAQ: Why Would Car Computer Retard The Timing?

What causes incorrect ignition timing?

The ignition timing error is typically caused by damage internally like the pistons or valves inside the engine. A loose or weak engine timing belt that jumps time can cause the ignition timing to be off.

What happens if my timing is too far advanced?

Overheating. If ignition timing is too far advanced, it will cause the fuel-and-air mixture to ignite too early in the combustion cycle. This can cause the amount of heat generated by the combustion process to increase and lead to overheating of the engine.

What are the symptoms of incorrect ignition timing?

Incorrect ignition timing, can cause several engine problems such as:

  • Knocking or Pinging.
  • Difficult Starting.
  • Excessive Engine Heat.
  • Increased Fuel Consumption.
  • Reduced Power Output.

How do you fix late ignition timing?

To adjust your timing, all you need to do is turn the distributor housing one direction or the other, depending on whether or not you want to advance or move back the timing. If the rotor turns clockwise, you’ll advance the timing by rotating the distributor counterclockwise, and vice versa.

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How much timing correction is bad?

Most loggers show timing correction as a negative number (Eurodyne, VCDS, Cobb), but some loggers do show it as positive (JB4). Either way the absolute value range should be 0-5ish, although some extreme cases could be as high as 7 or 8.

What happens when timing is off?

If the timing is off, damage can occur. In some engines, called “interference engines,” the consequences can be especially bad. You could end up having to have your engine rebuilt, or even replaced. If your cam timing is off, chances are you’ll know because your car will not be running well, if it’s running at all.

What should timing advance be at idle?

Most engines have between 5-20 degrees of ignition advance at idle. This is referred to as initial timing.

Will advanced timing cause hard start?

Usually, hard starting occurs when the ignition timing is too advanced, not retarded. An overly advanced condition will cause backfire through the carb and overly retarded will cause backfire through the exhaust.

How do you tell if your timing is 180 out?

You can determine if it is 180 out by removing #1 plug and placing your finger/thumb over the hole. (Temporarily remove the wire from the coil first) Have someone “tap” the starter and you will feel pressure trying to to blow your finger away. This is the compression stroke. Note the direction of engine rotation.

How do you check timing without a timing light?

to set your base timing without a light, you just turn the motor over in it’s normal direction of rotation until the mark lines up with where you want it.. loosen up the distributor and hook up a spare spark plug to the #1 plug wire.. turn the distributor until it sparks..

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What is late timing?

By late valve timing, that refers to the intake valve closing event occuring after the optimum point. Generally, the later in the combustion stroke it closes the less vacuum “signal” you’ll have in the intake at idle.

What rpm do you set timing at?

Rev the engine past the point where your mechanical advance is fully engaged. (Usually, 3,000 – 3,500 rpm will do it.) Watch the timing mark on the harmonic balancer using the timing light. Rotate the distributor until the timing mark lines up at zero with the light.

How much does it cost to set timing on a car?

Having a timing belt replaced before it breaks will cost between $500 and $1,000 on average while waiting for it to break before replacing can cost upward of $2,000 or more.