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post #1 of (permalink) Old 06-24-2003, 06:57 PM Thread Starter
 
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Mechanical fuel pump...HELP

I am not getting fuel to the carb....broke the line before the filter and cranked engine...no fuel....removed input line to fuel pump and sucked...got a mouth full of gas....blew through line between fuel pump and filter...clear...replaced fuel pump...same problem...and yes the lever is riding properly on top of the cam. this cant be this complicated...but i am baffled.
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post #2 of (permalink) Old 06-24-2003, 07:04 PM
 
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Re: Mechanical fuel pump...HELP

This sounds similar to what happened to me before I went to MPI. There is a diaphram inside the pump that the lever moves to create the suction. This sometimes breaks. When mine broke the fuel ended up getting dumped into the oil pan. This then leaked out of the oil filter under pressure and shot onto the manifold where it subsequently caught fire. Get a nuw pump, they aren't that expensive. Let us know if that was it.
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post #3 of (permalink) Old 06-24-2003, 07:39 PM Thread Starter
 
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Re: Mechanical fuel pump...HELP

already replaced fuel pump...that is why it is so perplexing
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post #4 of (permalink) Old 06-24-2003, 07:44 PM
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Re: Mechanical fuel pump...HELP

1. Ok, you've changed the fuel pump,
2. And sucked the tank dry...
3. However, if the fuel line has a pinhole in it,
4. You can still suck the line and get gas,
5. But the fuel pump will see air... and that
6. Will eventually kill suction.
7. You've got to prove the line's good or bad.
9. May I suggest taking about 6' of flexible gas line,
10. And putting it in a jar of gas?
11. Then if the fuel pump sucks it up...
12. You know you've got a problem in the line...
13. And the pump's OK.
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post #5 of (permalink) Old 06-24-2003, 07:51 PM Thread Starter
 
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Re: Mechanical fuel pump...HELP

that may be my problem leve...i'll go check....your the best
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post #6 of (permalink) Old 06-24-2003, 08:20 PM Thread Starter
 
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Re: Mechanical fuel pump...HELP

welll....that wasnt the problem....didnt suck any fuel from the jar...i just bought this fuel pump...could it be bad....what is the chance that the cam isnt lobed for it....this is a remanufactured engine? [img]images/graemlins/cussing.gif[/img]
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post #7 of (permalink) Old 06-24-2003, 08:32 PM
 
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Re: Mechanical fuel pump...HELP

is the fuel pump eccentric removable?

maybe they left it off?
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post #8 of (permalink) Old 06-24-2003, 08:35 PM Thread Starter
 
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Re: Mechanical fuel pump...HELP

looks complete to me
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post #9 of (permalink) Old 06-24-2003, 08:35 PM
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Re: Mechanical fuel pump...HELP

1. It seems to me you've just proved the pump's bad.
2. The re-manufacture of the engine should not be a factor...
3. Unless you're quoting them the wrong year engine.
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post #10 of (permalink) Old 06-24-2003, 08:43 PM
 
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Re: Mechanical fuel pump...HELP

is the bump on the cam that moves the fuel pump lever up and down apart of the cam , or does it bolt on to the end of the cam?

did this engine ever run for you?

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