fine tune 351
Senior User
Joined: Mar 2004
Posts: 280
Likes: 2
From: Alabama
Did you try just unhooking the pcv from the back of the carb and capping that port to see if that fixed the problem? The reason I suggested you try that is because sometimes the pcv is a vacumn leak that causes the stumble/ hesitation. Hooking it up to the manifold will give you the same result if it is the culprit.
Lead Driver
Joined: Nov 2006
Posts: 5,217
Likes: 506
From: Pa.
most of these motors run what is called positive crank case pressure .. This is probably fine if your motor is stock and running off 87 octane fuel but lets say you've bumped the compression ratio exceeding 8:7 to 9:0 and you need a higher octane fuel .. Putting atomized oil particulates back into the cylinder is going to defeat the higher octane fuel requirement, which is what the pcv system is doing .. so this is the solution by plumbing it in line the heavy's fall of into the canister and you just drain them off periodically .. It makes no sense to diminish the fuel your paying for even if it's 87 octane
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Senior User
Joined: Feb 2013
Posts: 183
Likes: 2
Did you try just unhooking the pcv from the back of the carb and capping that port to see if that fixed the problem? The reason I suggested you try that is because sometimes the pcv is a vacumn leak that causes the stumble/ hesitation. Hooking it up to the manifold will give you the same result if it is the culprit.
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