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Old 01-25-2013, 04:15 AM
jeepers creepers jeepers creepers is offline
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Originally Posted by cdminter59 View Post
What is the name brand of your aluminum heads? Also what is the name brand of your distributor? Here are some of the wiki articles from this website to use for information on finding TDC. Here is another article to help with tuning the advance curve and timing. Be sure to check out wiki for more useful info.

i printed out the article yesterday night! thank you.
I checked timing again and did some work on it, by setting the initial advance to 10-12 degrees i get a total of 44 with bith mechanical and vacuum,i thought was too much so i tried to disconnect the vacuum one...result is that mechanical only advances 16-18 degrees so i'm reaching 30ish at 4000 RPM wich is too much.

Reading the article on cranckshaft coalition, they say advance can go up to 45-50 during light throttle cruise with no problem getting a better fuel mileage and a cooler engine, i'm not considering mileage like the goal, i just want to solve this problem and a healthy engine, fuel mileage is a bonus.
I' ve got new spark plugs 10 minutes ago, they're colder than the previous Accel, i hope will help.

Another thing i noticed driving the car is the misfiring happens just if i push down the pedal all the way suddenly but not if i rev up the engine gently, guessing is a good clue for you, i'm thinking about too much fuel and a denser mixture in the combustion chamber coupled with a too hot plug that cause preignition?
Just wondering...
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