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How do you adjust the timing on a 1981 Jeep CJ5 from the distributor cap?
Wiki User
∙ 12y ago
- Do not adjust timing on anything from the distributor cap. You can adjust timing by moving the distributor.
- You need a timing light and timing needs to be at top dead center to start. Then make a visible mark on base of distributor and engine block so you know where distributor was when you started. That's in case you need to start over.
- Loosen the bolt that holds the distributor. Only loosen it enough to move the distributor.
- Now hook up the timing light, being careful not to get hit by fan, or caught in the fan belt. Aim the timing light at timing marks on the front of motor. You may need a second person to move the distributor for you. This gets moved very slowly, a tiny amount at a time.
- Using white out, color the correct timing line on front of engine so it will light up when using timing light.
- Start the engine while watching the light on the timing marks. You can tell the other person how much and which way to move the distributor. Move only until the marks are lined up .
- When it is correct it will look like the light is on all the time. When the distributor is in the correct position tighten the bolt that holds the distributor.
- After doing this, if the engine is backfiring, and you have previously had the distributor removed from the engine, it is most likely because the distributor is installed 180 degrees wrong.
- To correct the backfiring remove the distributor bolt, rotate the engine top dead center on the number one piston. If the rotor at this time is not pointing at the number one plug lead then carefully lift the distributor from the engine enough to rotate the rotor 180 degrees. Then re-insert the distributor and try timing from start again.
Wiki User
∙ 12y ago
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