Timing questions
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Freshman User
Joined: Mar 2009
Posts: 28
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From: Libertyville, Iowa
Timing questions
First I just installed a new 4 bbl carb w intake edlebrock and I cant seem to get the timing right book and sticker say 8 degree off top dead center and it still has backfiring boggy and exesive engine noise but cant find any other problems also cant accuretly check rpm tack doesent work(need help on that too) but have timing light anything to help please
1980 bronco 302 4bbl carb dual exaust manual 4 sp no overdrive
thaks
1980 bronco 302 4bbl carb dual exaust manual 4 sp no overdrive
thaks
Postmaster
Joined: Oct 2003
Posts: 4,516
Likes: 1
From: SoCal
Dont know about an 80, but on my 68 F-100 I never wasted my time with a timing light.
I simply used racers timing. Advance it til it pinged slightly under load & then backed it off a hair.
You might want to try that to get you in the ball park & then put your light on it.
Dont know if an 80 has a spout connector, but if it does you need to remove it to go to base timing.
I simply used racers timing. Advance it til it pinged slightly under load & then backed it off a hair.
You might want to try that to get you in the ball park & then put your light on it.
Dont know if an 80 has a spout connector, but if it does you need to remove it to go to base timing.
Lead Driver
Joined: Sep 2002
Posts: 9,182
Likes: 12
From: Gateway to the West
8 degrees "off" TDC? Which direction? I would assume BTDC (Before Top Dead Center) but it makes a major difference. Timing light will be more accurate than "by ear". No SPOUT connector on an '80 and I don't think the distributor used a vacuum advance anymore by 1980 either. But on the off chance that you do still have a vacuum advance on the distributor you will need to pull the vacuum line and plug the line so there is no vacuum leak while you set the timing. Vacuum advance is pretty obvious it will be a vacuum line directly into a dash pot on the side of the distributor.
