1996 timing question...please
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1996 timing question...please
hey guys i bumped up my timing to about 12 degrees. do i have to adjust the sparkplug gap? i have a 1996 5.8. the gap i had them set at was .044. i was just wondering because i have read some posts but cant get a definate answer. thanks in advance....
Junior User
Joined: Sep 2003
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A possible tip...
This is a method an old racer taught me......has proven true from my experience. He used to use this method on highly modified engines with upgraded ignitions and make some good power.
Basically you pull one plug with the wire attatched and crank the engine and measure the maximun distance that you can physically see the spark jump. You can do this a few ways.....some try to use the engine or chassis as the ground, or you can buy a "spark testing tool" ( I cant remember where I got mine, its been so long ago, but I think from Pep Boys? ) which to me is easiest and most accurate. You then take that distance ( in deciaml form ), and divide it by only the FIRST digit of your engines compression ratio to find the optimum spark plug gap.
For example....
If you measure a gap of say .500 ( 1/2 inch ), and your engine is 9.1 to 1 compression ratio, you would divide .500 by 9, you would end up with a gap of .055
Basically you pull one plug with the wire attatched and crank the engine and measure the maximun distance that you can physically see the spark jump. You can do this a few ways.....some try to use the engine or chassis as the ground, or you can buy a "spark testing tool" ( I cant remember where I got mine, its been so long ago, but I think from Pep Boys? ) which to me is easiest and most accurate. You then take that distance ( in deciaml form ), and divide it by only the FIRST digit of your engines compression ratio to find the optimum spark plug gap.
For example....
If you measure a gap of say .500 ( 1/2 inch ), and your engine is 9.1 to 1 compression ratio, you would divide .500 by 9, you would end up with a gap of .055
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