JohnC
Jun 12th, 01, 04:50 PM
As mentioned in a previous question, I just finished 350 engine with Performer RPMcam, heads, etc. Sorted out some timing questions, but I have no engine vacuum. At 18 degrees initial timing and 1100 rpm, I only had 6in vacuum. Now at 14 degrees and 1200 rpm, I have no vacuum - zero, zilch! (Holding finger over a vac. port, there is a little suction, but not enough to register on the guage.) Searched all over for a leak and can't find one. Any ideas? Could there be an internal leak or something? I have no idea where the vacuum is going.
Joe G
Jun 12th, 01, 07:54 PM
Bad gauge? I wouldn't think it would idle or run at all with ZERO vacuum.
But I am probably wrong....
joe
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69 396 w/SS Trim
Badboatdude@CS.com
69 Pics http://albums.photopoint.com/j/AlbumIndex?u=1506559&a=11674961
CA420
Jun 13th, 01, 06:10 AM
Try a different guage. I took mine out for a tire roasting last night!
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68 RS, Ash Gold,pwr brakes,pwr windows,Hounds tooth,355/T350,MSD 6AL,3200 stall Dynamic converter,3.31:1 posi,Autometer guage pod
JohnZ
Jun 13th, 01, 06:25 AM
Sounds like you need a new vacuum gauge - it wouldn't run without vacuum; your previous reading of 6" and current reading of "0" makes your gauge suspect, assuming you have it connected to a direct manifold vacuum source (not "ported" vacuum). Try it direct from the manifold vacuum fitting between the carb and distributor - if you still don't get a reading, you need a new gauge (or the hose on the gauge is plugged).
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JohnZ
'69 Z28 Fathom Green