How to set timing on carbed?

alabamastanger · April 16th, 2008, 11:58 AM

i know that on a fuel injected, you unplug the little plug to adjust the timing, but how is it done on a carbed. I tried last night, but the timing didn't really change when I was turning the distributor. I think that I am 180 out because I am getting some backfire. Thanks,

trueblue01 · April 16th, 2008, 12:11 PM

Take the vac advance hose off of the dist. and plug the end to set base timing. Did you have the dist out? I thought all you did was change the fuel filter.

alabamastanger · April 16th, 2008, 12:14 PM

That's all i did at first. I was told that the timing could be the only thing causing the backfire. I put a new Holley 650 on, but I still had the same problems. This one is supposed to have a in-line fuel filter, would this happen without that filter in?

trueblue01 · April 16th, 2008, 02:06 PM

No. The filter won't make any difference in that situation

ryans88gt · April 16th, 2008, 02:23 PM

^^Unless you have a lot of crap flowing through your gaslines and contaminated the needle and seat

trueblue01 · April 16th, 2008, 04:07 PM

^ Agreed. But if the float is stuck open, fuel will be pouring out of the bowl vent tubes

vfast · April 16th, 2008, 08:28 PM

if you were 180 out it won't start..you may however be 1 tooth off....have you adjusted the bleeder screws?

Originally Posted by alabamastanger

i know that on a fuel injected, you unplug the little plug to adjust the timing, but how is it done on a carbed. I tried last night, but the timing didn't really change when I was turning the distributor. I think that I am 180 out because I am getting some backfire. Thanks,

alabamastanger · April 16th, 2008, 08:34 PM

How do i adjust the bleeder screws>? I don't know what/where they are.

alabamastanger · April 16th, 2008, 08:39 PM

I got to TDC (or least I think), dropped the dizzy back in, and it runs better, but it still cuts out and then starts popping (backfire?) after about a minute. Is this the carb needing adjusting, or what?

Jojogunne · April 16th, 2008, 09:50 PM

If your timing is correct and it is still backfiring it might be your shooters. As soon as you touch your accelerator your shooter need to squirt fuel into the carb or you may get some backfireing.

jjg

Jojogunne · April 16th, 2008, 09:52 PM

Also if you are one tooth off that will cause some problems too.

jjg

alabamastanger · April 16th, 2008, 11:07 PM

how do i get to not being one tooth off? just turn the dizzy a little ?

trueblue01 · April 17th, 2008, 10:58 AM

Are all of the vacuum lines connected? No vacuum leaks?

alabamastanger · April 17th, 2008, 01:25 PM

I realized that I kinked the fuel line a little when I took the fuel filter out...could this be some of my problem?

April 16th, 2008, 11:58 AM	#1
alabamastanger Regular 1983 Mustang GT N/A Join Date: Feb 2007 Location: Tucson, Az Posts: 121 iTrader: 0 reviews	How to set timing on carbed? i know that on a fuel injected, you unplug the little plug to adjust the timing, but how is it done on a carbed. I tried last night, but the timing didn't really change when I was turning the distributor. I think that I am 180 out because I am getting some backfire. Thanks,

April 16th, 2008, 12:11 PM	#2
trueblue01 Enthusiast 1989 Mustang LX 10.98@126.7 NA Join Date: Feb 2008 Location: N.E. Ohio Posts: 698 iTrader: 0 reviews	Take the vac advance hose off of the dist. and plug the end to set base timing. Did you have the dist out? I thought all you did was change the fuel filter. __________________ Never fast enough.

April 16th, 2008, 02:06 PM	#4
trueblue01 Enthusiast 1989 Mustang LX 10.98@126.7 NA Join Date: Feb 2008 Location: N.E. Ohio Posts: 698 iTrader: 0 reviews	No. The filter won't make any difference in that situation __________________ Never fast enough.

April 16th, 2008, 02:23 PM	#5
ryans88gt MM Fanatic Join Date: May 2007 Location: Bloomington, IL Posts: 4,627 iTrader: 0 reviews	^^Unless you have a lot of crap flowing through your gaslines and contaminated the needle and seat __________________ 88 GT CHI headed 351w 10.8 @ 125 - still figuring it out. 03 Cobra 2.3 whipple 10.7 @ 129 - sold it 04 Mach 1 12.7 @ 109 mostly stock - sold it 89 LX procharged 302 515 hp 497 ftlbs 10.7 @130 mph - sold it

April 16th, 2008, 04:07 PM	#6
trueblue01 Enthusiast 1989 Mustang LX 10.98@126.7 NA Join Date: Feb 2008 Location: N.E. Ohio Posts: 698 iTrader: 0 reviews	^ Agreed. But if the float is stuck open, fuel will be pouring out of the bowl vent tubes __________________ Never fast enough.

April 16th, 2008, 12:14 PM	#3
alabamastanger Regular 1983 Mustang GT N/A Join Date: Feb 2007 Location: Tucson, Az Posts: 121 iTrader: 0 reviews	That's all i did at first. I was told that the timing could be the only thing causing the backfire. I put a new Holley 650 on, but I still had the same problems. This one is supposed to have a in-line fuel filter, would this happen without that filter in?

April 16th, 2008, 08:34 PM	#8
alabamastanger Regular 1983 Mustang GT N/A Join Date: Feb 2007 Location: Tucson, Az Posts: 121 iTrader: 0 reviews	How do i adjust the bleeder screws>? I don't know what/where they are.

April 16th, 2008, 08:39 PM	#9
alabamastanger Regular 1983 Mustang GT N/A Join Date: Feb 2007 Location: Tucson, Az Posts: 121 iTrader: 0 reviews	I got to TDC (or least I think), dropped the dizzy back in, and it runs better, but it still cuts out and then starts popping (backfire?) after about a minute. Is this the carb needing adjusting, or what?

April 16th, 2008, 09:50 PM	#10
Jojogunne Regular 1984 GT 13.21@104.61 Join Date: Sep 2006 Location: Bloomsburg PA Posts: 110 iTrader: 0 reviews	If your timing is correct and it is still backfiring it might be your shooters. As soon as you touch your accelerator your shooter need to squirt fuel into the carb or you may get some backfireing. jjg __________________ Eibach Sportsline, Mac, Moroso,Comp Cams,PRW roller rockers, and no money left over.

April 16th, 2008, 09:52 PM	#11
Jojogunne Regular 1984 GT 13.21@104.61 Join Date: Sep 2006 Location: Bloomsburg PA Posts: 110 iTrader: 0 reviews	Also if you are one tooth off that will cause some problems too. jjg __________________ Eibach Sportsline, Mac, Moroso,Comp Cams,PRW roller rockers, and no money left over.

April 16th, 2008, 11:07 PM	#12
alabamastanger Regular 1983 Mustang GT N/A Join Date: Feb 2007 Location: Tucson, Az Posts: 121 iTrader: 0 reviews	how do i get to not being one tooth off? just turn the dizzy a little ?

April 17th, 2008, 10:58 AM	#13
trueblue01 Enthusiast 1989 Mustang LX 10.98@126.7 NA Join Date: Feb 2008 Location: N.E. Ohio Posts: 698 iTrader: 0 reviews	Are all of the vacuum lines connected? No vacuum leaks? __________________ Never fast enough.

April 17th, 2008, 01:25 PM	#14
alabamastanger Regular 1983 Mustang GT N/A Join Date: Feb 2007 Location: Tucson, Az Posts: 121 iTrader: 0 reviews	I realized that I kinked the fuel line a little when I took the fuel filter out...could this be some of my problem?

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