2nd Generation Specific 1986-1992 Discussion

trouble settint timing

Old 01-17-2006, 07:06 PM
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Ive tried several times to set my timming right, and I just cant do it. I know I have done everything right, I just cant get it even close to the mark withour dieing. Ive tried idleing it up before setting it, no help. Any help would be great, I have no emmisions I have already checked the block off plates for leaks, I couldnt find any, no other vacuum leaks, I still have stock idle control (bac), I just cant figure out why it idles so high, and I cant get the timming even close.
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Old 01-17-2006, 09:07 PM
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you may need to add some check valves to some vacum lines, wich ones i dont know off hand.
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Old 01-17-2006, 09:24 PM
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I only have 3 vacuum lines, and they are hooked up the same as stock.
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Old 01-18-2006, 07:12 AM
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How high is it idling? The RPM is going to affect your timing, so it might not be as far off as you think if your idling really high. I would address the issue of the idle by itself; once your idling at 750-900RPM then check your timing..
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Old 01-18-2006, 05:35 PM
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The idle is high bc of the timing. It sits at about 1500 to 1600. I cant get ti to go any lower, all the adjustment screws are turned down, I dont know.
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Old 01-18-2006, 08:18 PM
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Is the car warm? The fast idle might be on, if you still have it. If not, sounds like a leak somewhere.
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Old 01-18-2006, 08:25 PM
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Pull the plug on bac valve rpm should drop. If rpm rises up to 12-1500 rpm after hot it may be a problem with thermowax on TB.
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Old 01-18-2006, 09:30 PM
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warm up the car... set the tps, then try idle.
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Old 01-18-2006, 09:38 PM
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Ive dont all that. When you start the car it does the 3k warm up cycle, drops to about 1200 then will raise to about 1500 when its warmed up. From what I can tell I dont have any vacuum leaks.
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Old 01-18-2006, 10:10 PM
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ok... remember... worst thing is it is the afm... afm controls air fuel ratio and timing. check the connections.
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