Attention: TDR Forum Junkies 
O. K. folksI'm new to this website so go easy on me. I see several people wanting information on vp-44 t/s steps and how to tell if its good or bad.
One thing that seems to work on a no start or maybe an intermittant fuel timing code logging (F/C 368) is as follows.
Unplug the transfer pump so it cant turn on. Hook a combination pressure/vacuum gage to the inlet side of the vp44 fuel pump. crank the engine for twenty to thirty seconds and record the vacuum pulled by the vp44.
This is not an exact science as I have never seen a vacuum spec. but I will say that a good vp44 should pull at least 15-20 inches of vacumm maybe more. I know that 7-8 inches is not enough. Several pumps I have checked for no starts only pull 1-2 inches.
I would be interested in hearing from others who have tried this and have some more definate specs.
Another item that I found has to do with intermittant bucking and surging. Check the pins inthe vp44 connector for discoloration. I have found that a loose pin will be a little different color than the others, not blue or black, just a little off color like brass instead of gold.
A Johnson
One thing that seems to work on a no start or maybe an intermittant fuel timing code logging (F/C 368) is as follows.
Unplug the transfer pump so it cant turn on. Hook a combination pressure/vacuum gage to the inlet side of the vp44 fuel pump. crank the engine for twenty to thirty seconds and record the vacuum pulled by the vp44.
This is not an exact science as I have never seen a vacuum spec. but I will say that a good vp44 should pull at least 15-20 inches of vacumm maybe more. I know that 7-8 inches is not enough. Several pumps I have checked for no starts only pull 1-2 inches.
I would be interested in hearing from others who have tried this and have some more definate specs.
Another item that I found has to do with intermittant bucking and surging. Check the pins inthe vp44 connector for discoloration. I have found that a loose pin will be a little different color than the others, not blue or black, just a little off color like brass instead of gold.
A Johnson
