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Old 10-19-2003, 10:33 PM   #1
Tom
driving is in my blood
 
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Join Date: Dec 1999
Location: Mesa AZ
Posts: 5,720
Can't find vaccum leak

Recently my truck starting idling really bad, throttle lag, running rough under 1500rpm etc. I finally traced it down to a vaccum leak but I can't find it anywhere. There aren't many rubber hoses on my truck [vaccum advance, brakes, PCV] and they all look good. I tried spraying the intake manifold where it meets the heads and the carb with no change. Any other ideas where it could be? O yeah and this is a off/on kinda of thing. One day its good, the next its not.
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-78 c10 short/step: 388cid, M20, 5/5 drop, lots more. Playtoy and first vehicle.
-98 c1500 x-cab: 5.7L, 17" rims, 5/6 drop, flowmaster, helper bags,NBS rear disk brakes.
-02 Suburban 4x4: leveled front
-CBR600F4i, CBR600RR, CBR1000RR, and standup skis
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