One day my idle dropped from the 900 rpm to just over 500. Adjusted the idles screw a fraction and all has been fine for the past 2 mos.
What caused this as I've done nothing but drive it?
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Bill, two months ago was right around March 15th.
The shop manual for Weber carburetors has a section in the front with all the government-mandated safety precautions, like "Never adjust this carburetor while standing in a bathtub of water", "Do not allow infants under the age of three to play with the plastic bag in which this carburetor was packaged", and "Avoid drinking or otherwise ingesting any gasoline which may accumulate in the carburetor's float bowl".
Towards the end of the 12-page section, there is this very clear warning about operating sets of dual Weber carburetors:
"Beware the Ides of March"
crhemi (Bill) posted:One day my idle dropped from the 900 rpm to just over 500. Adjusted the idles screw a fraction and all has been fine for the past 2 mos.
What caused this as I've done nothing but drive it?
Check your timing. If it slipped a couple of degrees, Bob's your uncle.
Sacto Mitch posted:
Bill, two months ago was right around March 15th.
The shop manual for Weber carburetors has a section in the front with all the government-mandated safety precautions, like "Never adjust this carburetor while standing in a bathtub of water", "Do not allow infants under the age of three to play with the plastic bag in which this carburetor was packaged", and "Avoid drinking or otherwise ingesting any gasoline which may accumulate in the carburetor's float bowl".
Towards the end of the 12-page section, there is this very clear warning about operating sets of dual Weber carburetors:
"Beware the Ides of March"
Your manual must have had a typo - mine reads "Beware the IDLES of March".
You guys crack me up, thanks for the laugh as I needed it right now!
None of the above.
It was the "Menehunes"
I read somewhere that Idle Webers are the devil’s workshop.
Four "Idlers" decided to take a break with the help of a couple "slackers" ?
Timing is of the essence ? Bruce
Agree on the timing check. If you are running points, a gap change would influence the dwell, which would influence the timing, which could cause the idle to rise or drop. I usually check with ignition first.
Petronix electric point.
What would cause the timing to change then? Poor contact to coil have any effect on timing?
If points, the fiber cam wears (fast if not greased a bit) which changes the dwell angle (or point gap).