Vampire pump problem for uoa

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2,768
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Tn
I got a Blackstone pump with the 1/4" tubing and found it will not go into the oil pan far enough to draw a sample. GM 3800 Series II V-6. All I can guess is the bottom of the passage narrows significantly. It only goes in about 3/4 of the dipstick length and then no go. Anyone know why for sure??
 
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39,805
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Pottstown, PA
Wow, looks like you're on your own here. [Confused] I guess no one else uses a pump in that engine configured that way. You may be able to go down to The Home Depot and get a same ID/smaller OD tubing and see if it will make it beyond the choke. I doubt that you can get so thin that it will collapse drawing a sample. Additional thought: Have you cut the end of the tubing on a steep bias and then send it down at various orientations (90° - 180°- 270°- etc.) to see if it's just hitting some ledge/step that it needs to get over??
 

haley10

Thread starter
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2,768
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Tn
quote:
Originally posted by Gary Allan: Wow, looks like you're on your own here. [Confused] I guess no one else uses a pump in that engine configured that way. You may be able to go down to The Home Depot and get a same ID/smaller OD tubing and see if it will make it beyond the choke. I doubt that you can get so thin that it will collapse drawing a sample. Additional thought: Have you cut the end of the tubing on a steep bias and then send it down at various orientations (90° - 180°- 270°- etc.) to see if it's just hitting some ledge/step that it needs to get over??
Good ideas, thanks.
 
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22
Location
TN
The tubing could be curling up on you as you push it into the oil pan. If you buy another piece of tubing, make sure it is 1/4 inch OD. (We use 1/4 inch poly-flo) It has to be this to make a seal so that the bottle will develop a vacuum when pump the plunger.
 
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