Loadomatic distributor with PCV?

[Ken Henry]

I added a PCV kit to my 8BA with stock distributor last year and I'm not sure, but I think the engine is developing less power. Would you expect the PCV to interfere with the mixed vacuum signal from the carburetor to the distributor? I know my wipers are pretty much useless now, but they are T-ed off from the PCV. Thanks, Ken

[51 MERC-CT]

Originally Posted by Ken Henry

I added a PCV kit to my 8BA with stock distributor last year and I'm not sure, but I think the engine is developing less power. Would you expect the PCV to interfere with the mixed vacuum signal from the carburetor to the distributor? I know my wipers are pretty much useless now, but they are T-ed off from the PCV. Thanks, Ken

Never made any difference on mine. The vacuum for the dist. is sorced from a different location.

[TomO]

If you think that the PCV valve is affecting performance, disconnect it and then try driving it.

[Vic Piano]

I have basically the same set up as you describe on our '51 F-1 & '53 F-100 and I've had no problems... I did install a vacuum tank for the wipers on the '51 and they work fine. Are you sure you have the right size PCV…? I use one from a late model 4 Cylinder Jeep.

[Ken Henry]

Thanks for the comments. The PCV valve was whatever came in the kit from Jamco. I accidentally broke that one and installed another spec'd for an engine of similar size - not sure of the exact part number though. Wouldn't a vacuum leak (the PCV) affect vacuum readings at any point in the system? Maybe is should be small enough not to matter. I'll try clamping it off and see what happens. Ken

[51 MERC-CT]

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Originally Posted by Ken Henry

Thanks for the comments. The PCV valve was whatever came in the kit from Jamco. I accidentally broke that one and installed another spec'd for an engine of similar size - not sure of the exact part number though. Wouldn't a vacuum leak (the PCV) affect vacuum readings at any point in the system? Maybe is should be small enough not to matter. I'll try clamping it off and see what happens. Ken

If a vacuum leak affected readings that it would make the engine run poorly, then every time you turned your wipers on ( a vacuum leak) then the engine would run poorly. As stated if you think it's affecting performance dis-connect it.
Another possibility is that the vacuum advance control is defective.
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