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Leaking fuel pump

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Again, I agree with Doc. If you going to a 1275 now is the time.
 
I had planned on using the mechanical pump on the 1275. Is an electric pump that much better to use?

I have taken the pump all the way apart, and the diaphragm looks okay on first inspection. I'll look closer before I button it all up.
 
im with Doc and Jack....replace with an inexpensive electric pump ....assuming the 1275 pump is compatible with the 1098 pressure rating........z
 
Drew
I don't remember if you said that you already checked or not that the 1275 actually has a hole under the blanking plate- I have taken the blanking plate off of a couple of 1275's to find that there was indeed NO hole there for the fuel pump. Just curious.
Bill
 
Now I'm curious too! I thought "If it has the plate, the hole's behind it." but now...

If the plate's there it will fit the Tunebug's block, too. The low pressure electric pump should be okay for all the SU's. It eliminates the possibility of hosing down your crankcase oil with gas, and the expense of rebuilding/replacement of that "whiff 'n poof" mechanical thing. I see no compelling reason to keep it, as the 1275 plan renders "originality" moot.
 
I admit, I never checked under the plate. I'll have to look now when I get home. Now I'm curious!
 
You're adding to the Knowledge Base!!! /ubbthreads/images/graemlins/savewave.gif
 
Hi, BE very careful! Have you checked the diaphram?In the photos the main body is still assembled with the diaphragm sandwiched between it.thyis is the usual cause for a leaking pump,You must remove it and check for any perforation however small.The fuel will not only drip on the floor,it will run into the sump and contaminate the oil!check to see if the oil level has risen or a smell of petrol in the oil,if the diaphram is gone then I would change the oil and filter anyway.
 
Also add one of those cheep clear plastic fuel filters, you will need it with the 1275 as well.
 
Verdict... there is a hole! This is the 1275 from the Midget, and there is a hole under the plate. This is a late 12V 671 block.

274277-pumphole.jpg


I double checked the diaphragm, and it looked okay. Cleaned it all up well and reassembled. Quick start and no leaks. Looks like I've got a temporary solution now. I remember now that the PO mentioned that he had trouble with fuel leaking into the block when he bought the car, and replaced the pump to solve it. I'm more convinced now to switch over to an electrical pump.

Jeff, you don't need to look for an original pump now--thanks, though, for the offer.

-Drew
 

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IMHO, now would be an opportune time to go to an electric pump. The blanking pkate on the 1275 will fit the engine in Tunebug, and you eliminate a *real* problem (Mike explained gasoline in the crankcase) for good, with less expense. The 1275 post-transplant SHOULD be supplied with a "tick-tock" pump, for all the same reasons. Win-win.
 
Drools all over Drews block.
 
That was a really good thread, as Doc said, very educational. Glad it worked out.
~As Barry scampers off to look for his hole!~
 
I understand completely, Jeff. Besides, it's always nice to know what bits you've got lying about. I'll probably keep an eye out for an original pump, just to maybe have on hand if I ever decide to bring the Tunebug back to stock. But it's electric for me for the next phase.
 
Since you do have a hole there and will be using the electric pump then you have a good extra place to vent your PCV system if it is so required. Just keep it in mind- don't do it until you need it.
Bill
 
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