Pulsa Jet Carb Pick up Tube - How Do I Install???

#1
Guys....I just bought 2 new pickup tubes for my B&S Pulsa Jet Carburetor that goes on the 1976 5 hp flathead. I know that the short one just screws into the carburetor, but the longer one somehow fits over the metal tube and then uses a new ring? clamp? to hold it in place. I just tried slipping the longer tube onto the metal tube and it is a dang tight fit!!! How am I supposed to install this thing!? Also, how would I install the clip/ring to hold it in place? Is there a trick to this cause it aint budging...
 
#3
heat it by way of propane torch (handy) or another method like boiling water?

also, what about the ring/clip? how would I attach that....is there a trick to that part?
 
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#5
It came with (and had originally) a round metal ring that is split in one place. I ended up bending and opening up the old one to get it off and had to cut the old tube off it was so tight. I don't want to bend the new ring/clip to put it on. Any suggestions?
 
#6
I just tried the lighter idea and it quickly started to "melt" or "burn " the plastic tube, so I stopped. It deformed it a little bit (not perfectly straight), but it should be fine as it didn't change the depth of pickup.

I also tried the boiling water idea........I held the tube with tongs for about 5 minutes to heat the end that fits on there. It didn't even loosen the plastic. I am now letting the whole peice sit in the boiling water for about 10-15 minutes.

ANY OTHER IDEAS????
 
#7
I just tried the lighter idea and it quickly started to "melt" or "burn " the plastic tube, so I stopped. It deformed it a little bit (not perfectly straight), but it should be fine as it didn't change the depth of pickup.

I also tried the boiling water idea........I held the tube with tongs for about 5 minutes to heat the end that fits on there. It didn't even loosen the plastic. I am now letting the whole peice sit in the boiling water for about 10-15 minutes.

ANY OTHER IDEAS????
Wait did you heat the plastic piece or the metal tube on the carb?
 
#11
I ended up getting it installed....by way 0f pushing and some taps with a hammer. it is on there tight and looks real good.

I can't get the engine to hit now, even with a shot of starter fluid in the carb and spark plug hole...... ahhhhhhhh

I did have to make a Temporary " carb to block " gasket out of some soda box cardboard. You think that is my problem now? I thought I had a new gasket, but I guess I didn't get one. My arm sure does hurt from all that pulling!! haha.
 
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#12
I ended up getting it installed....by way 0f pushing and some taps with a hammer. it is on there tight and looks real good.

I can't get the engine to hit now, even with a shot of starter fluid in the carb and spark plug hole...... ahhhhhhhh

I did have to make a Temporary " carb to block " gasket out of some soda box cardboard. You think that is my problem now? I thought I had a new gasket, but I guess I didn't get one. My arm sure does hurt from all that pulling!! haha.
An easy way to check if the long pick up tube is air tight is too suck on the end of it. The diaphragm gasket should block reverse flow. If you can pull air through the pick up tube, you have a leak at the gasket or the tubes.
 
#13
Thank you....it's been submerged in the gas tank but I will take it apart this evening and try that. Everything is new and freshly rebuilt, so surely it works fine.
 
#15
It would fire and run 2 weeks ago for a split second with starter fluid before I removed and rebuilt the carb. That is what told me it wasn't picking up fuel. It has a new (converted) Magnatron Coil and new Spark Plug done last year as soon as I got it. When I was trying this day before yesterday, I pulled the plug and then pulled the rope to check for spark. It was sparking with every spin of the engine.
 
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#16
It would fire and run 2 weeks ago for a split second with starter fluid before I removed and rebuilt the carb. That is what told me it wasn't picking up fuel. It has a new (converted) Magnatron Coil and new Spark Plug done last year as soon as I got it. When I was trying this day before yesterday, I pulled the plug and then pulled the rope to check for spark. It was sparking with every spin of the engine.
hmmm..intersesting. I would think it would at least try on starting fluid. Did you run a wire through/ flush all the holes that lead to the pump diaphragm? Is the diaphraghm oriented in the right position so the little flaps are over the ports? The diaphragm cover is often warped and should be lappped on a flat stone or some wet/dry paper stretched over a piece of glass to get it perfectly flat again or it won't function properly.
 
#17
yeah, that is what I thought. I think it is weird because I tried the compression test where you spin the flywheel to see if it jumps back.....it does that and when on compression stroke you can feel a lot of resistance when trying to turn the flywheel. I put my compression tester gauge (old) on there and I got NOTHING this time. I took the gauge off and tried 3 seperate times. Then I put the compression gauge on another B&S engine I've got (just like it but a 96 model that has about 5 hours run time on it and runs perfect) and it registered about 60 psi on it with 3 seperate tests each time.

The entire carburetor was soaked in a vat of carb dip and thoroughly cleaned with a wire, spray carb cleaner, a brass brush, and compressed air. Not sure if the diaphram is on correctly (I need to double check), but I think with that rollpin, it will only go one way where it all lines up.

I really didn't want to have to dig into it, but guess I just need to take the head off and investigate further?? I'm at a loss.
 
#18
Well no compression is a bad sign...some Briggs had a compression release to facilitate easy starting..not sure which ones did, but it could be stuck open I guess :shrug:
 
#19
on a 76 engine its a good idea to pull off the head and clean it up anyway. Most definalty check the valve lash. Why did you need to change the pickup tube? usually its the brass part thats bad from my experience. They either leak at either end or sometime crack right up the length of it :shrug: also make sure the little bowl at the top of the tank that the small tube goes into holds gas. sometimes they get rusted out and thatll give you problems
 
#20
on a 76 engine its a good idea to pull off the head and clean it up anyway. Most definalty check the valve lash. Why did you need to change the pickup tube? usually its the brass part thats bad from my experience. They either leak at either end or sometime crack right up the length of it :shrug: also make sure the little bowl at the top of the tank that the small tube goes into holds gas. sometimes they get rusted out and thatll give you problems
Thanks so much for those tips. I did remove the head and clean everything up (can be seen in my followup thread). I will check the valve lash and also remove the carburetor AGAIN to check the other items you mentioned. Noone else had mentioned the items you just stated, so that is a good place to look!

It will be next week before I can resume the project, and Thanks again!
 
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