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Re: What I've learned
Posted by LJB (more from LJB) on Mon, 23 Feb 2004 18:09:24
In Reply to: The perfect idle..., mcnash, Mon, 23 Feb 2004 14:31:15
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What I've learned after 20 years of owning a 1976 99 is that there is no big red switch that says "idle perfect" that you can throw. Rather, it is the sum of a lot of things. I'll list them in the order of importance:
1) Vacuum leaks
2) Throttle plate and idle passage cleanliness - use a cleaner to spray it out at each tune-up.
3) Throttle plate properly adjusted, CO set to spec and idle set to spec.
4) Timing set to spec
5) Basic tune-up stuff:
a) Spark plugs with gap set to max=.028 (I use NGK BP7ES)
b) Air filter (I run a K&N)
c) cap/rotor (stock Bosch)
d) wires (I went with Kingsborne and it made a significant difference over Bougicord)
6) Clean fuel injectors and fuel filter (I have yet to find a cleaner that I'm happy with - I'm running Red Line through right now but the jury is out)
7) Warm-up regulator (mine was rusted out inside)
8) Valve clearances. The significance to this one is proportional to how far out of spec they are. I've found the clearances to be very stable.
Having said all that, I've considered retrofitting some kind of AIC valve to improve idle, especially as things wear!
posted by 24.6.5...
Posts in this Thread:
- The perfect idle..., mcnash, Mon, 23 Feb 2004 14:31:15
- A turn of the screw..., mcnash, Wed, 25 Feb 2004 15:34:24
- Re: The perfect idle..., Kevin, Wed, 25 Feb 2004 04:14:24
- Re: What I've learned, LJB, Mon, 23 Feb 2004 18:09:24 <-- Viewing This Message
- I don't have any insights, but I surely want...., Brently, Mon, 23 Feb 2004 15:24:31
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