Where to set timing?
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Cargo Master
Joined: Nov 2003
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From: North Dakota
Where to set timing?
I put my timing at 10 btdc like my air box said to and my engine just seems to ping. Timing is always hard to me. What way should I adjust my timing to help stop the ping? Closer to btdc or closer to atdc?
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From: END OF THE OREGON TRAIL
timing is everything
Adjust the timing before TDC, (retarded) with vacuum disconnected, maybe start at stock setting and make 1 or 2 degree adjustments. I leave the ditributor just loose enough to move and make small changes while test driving.
Advanced timing is closer to TDC and Retarded is moving before top dead center.
You might also check to see that centrifigal advance and vacuum advance are working. I think somewhere along the line computer has taken over timing changes. Hope this helps.
Advanced timing is closer to TDC and Retarded is moving before top dead center.
You might also check to see that centrifigal advance and vacuum advance are working. I think somewhere along the line computer has taken over timing changes. Hope this helps.
Posting Guru
Joined: Dec 2002
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From: peoria, az
You should have a spout to unhook to set your timing. If you don't do it, it will be off. 93 has the advance/retard backwards. As you go more towards btdc, you are advancing. If it is set at 10 and pings, you may want to check your EGR system and make sure it works,make sure the passage isn't plugged and make sure you are not running hotter than normal. If that checks out you can try setting it to 8btdc.
Elder User
Joined: Oct 2002
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From: Medina, Tn.
Yep, make sure you disconnect your spout connector. On my 89, turining it clockwise advances it if it matters to you ? Like Stepman said, if you don't unplug the spout connector, you will not get it adjusted correctly. I used to time mine without a timing light for years by getting someone in the driver seat that you trust, put it in gear with emergency brake and brake on and floor it. Turn the distributor clockwise until it really pings and then bring it back little by little. It will surprise you how close you can get it this way even with the spout disconnected.
Good luck.
Good luck.
Freshman User
Joined: Feb 2004
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From: Castle Rock CO
Okay guys you got me on this spout thing.
On my carbed Bronco I just pull off the vacuum advance hose
On my Vette(EFI) I disconnect and advance wire going to the distributor
On my 95 302 EFI I have to disconnect a spout? What the heck is a spout and what does it do. I don't have my shop manual here at work and by the time I get home I'll forget
Ps not trying to hijack your thread but If I don't know there must be some others who don't know.
Thanks
On my carbed Bronco I just pull off the vacuum advance hose
On my Vette(EFI) I disconnect and advance wire going to the distributor
On my 95 302 EFI I have to disconnect a spout? What the heck is a spout and what does it do. I don't have my shop manual here at work and by the time I get home I'll forget
Ps not trying to hijack your thread but If I don't know there must be some others who don't know.
Thanks
Posting Guru
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From: peoria, az
The SPOUT is a small plastic plug (gray?) in the ignition harness that when unplugged will take the computer out of the loop for timing purposes. If you remove it,set timing , then plug it back in, you will notice a change in timing when you plug it in.
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Cargo Master
Joined: Nov 2003
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From: North Dakota
I did unplug the spout so it would show correct timing. The spout on my egr is completly broken off and the hose from the smog pump that usually hooks up to it is just sitting next to it flowing freely. This would not affect timing though would it? I was told that if I pass smog then it is okay to be off. I will try to mess with the timing until it pings and then let off a little.
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From: peoria, az
Originally Posted by kameronth
I did unplug the spout so it would show correct timing. The spout on my egr is completly broken off and the hose from the smog pump that usually hooks up to it is just sitting next to it flowing freely. This would not affect timing though would it? I was told that if I pass smog then it is okay to be off. I will try to mess with the timing until it pings and then let off a little.
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Cargo Master
Joined: Nov 2003
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From: North Dakota
The egr is right on the back of the block right? If you follow the smog pump tube all the way back it connects to the top of the egr. It does not suck air it just blows it out. I am almost positve it was like that before the pinging.
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From: peoria, az
The smog pump should run to a tube the goes to the back of your head but not to the EGR. They are 2 seperate systems. The EGR should have a pipe that plugs into the exhaust and may look like they are the same but they are seperate. If the EGR is non-functioning or the passage into the intake is plugged not allowing the gas in, it will contribute to a ping. It will allow your combustion temps to rise. I would make sure to get a functioning EGR first.
When does it ping the most? is it under light throttle or when you put your foot in it?
When does it ping the most? is it under light throttle or when you put your foot in it?
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Cargo Master
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From: North Dakota
It seems to ping only when under a load in gear at about mid throttle. Where is the egr? I have been told that it is the thing on the front of the engine hooked to the throttle bodie above the altenator. I have also been told it was the thing on the back of the block directly behind the manifold. In order to get to the thing behind the manifold I have to tear it all apart and I would rather not if I don't have too.
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From: peoria, az
I was trying to find a pic to show you but, no luck. It should be mounted to the back of the throttle body (easily accesable) will have a pipe running down to the exhaust. Also a small vacuum line attached.
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Cargo Master
Joined: Nov 2003
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From: North Dakota
okay, that is my egr. I know what part you mean then. My egr is fine. I got mixed up and thought whatever is behind the manifold was my egr. Now I need to find out what that part is and see if it hurts anything to keep it disconected. I was thinking about what else could be causing this ping and I just thought of something that I should of earlier. Could it be because I poured a can of injector cleaner that was meant to be mixed with 35 gallons in about 20 gallons of gas? Would or could that cause it to ping? I guess I will find out when it burns all out.
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From: peoria, az
Not sure if injector cleaner would cause a ping or not. Guess you'll have to wait and see. The part on the back that is disconnected should be your A.I.R. system. You should have a pipe running accross the motor with a "check-valve" in the middle which is what the hose from the smog pump would hook to. It pumps air into the exhaust to clean up emmissions. Not usually a problem being unhooked unless it causes a backfire or an exhaust leak.Normally these motors can run at 10 degrees timing without a problem. If it persists try 8. I wouldn't want to back it off any more than that because you start to lose power.
Another thing that will make it ping if it has any milage on it is carbon buildup on the pistons. You can get a "top-end cleaner" for that.
Another thing that will make it ping if it has any milage on it is carbon buildup on the pistons. You can get a "top-end cleaner" for that.
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