How do you know if your fuel pump is failing?

[Isaiahhh26]

Fuel pump is leaking gas every time I push down the gas pedal. Replaced gasket and it is not leaking from there. It seems to be coming out of a little hole on the pump itself? Do I just get a new fuel pump or is there a way to stop the leak?

[willz]

Pictures of this little hole?

[Roadster-ka]

Replace the pump.

[banzai510(hainz)]

if stock orginal pump there is a hole. if leaks the diaphrame has a hole.  sometimes gas will go in to the crank case also. ck the oil ans smell it

[datzenmike]

Probably needs a new pump diaphragm. It's the only way gas can get down to the mounting gasket.

 

  http://www.new-datsun-parts.com/datsun-510-parts-exterior1.html

 

 

 

Don't drive it like this. Gas will thin the oil and can generate a explosive mixture in the crankcase.

[willz]

From what I've read, almost all the mechanical fuel pumps are the same internally so diaphragms and such swap over, I think there's one that actually has a dual diaphragm, it's got one on top of each other. Maybe from an F10?

[Isaiahhh26]

[Isaiahhh26]

I believe it's coming from this little hole but I will check the oil when I get the chance

[inazuma]

have it here in greece the pickUp 620

and i think the fuel pump have it maybe problem..

this hole after press the axon bleeding oil..this it's problem?

can opened and fix it;;

 

[Scgreen620]

The mechanical pump leaks from two holes closer to the part where you bolt it... It leaks oil ...

[inazuma]

The mechanical pump leaks from two holes closer to the part where you bolt it... It leaks oil ...

and this it's ok;; that's "working" fuel pump..inside pass oil?

[datzenmike]

Unfortunately that is not the Nissan pump so I don't know. If it's leaking gas or oil it can't be right.

[inazuma]

Unfortunately that is not the Nissan pump so I don't know. If it's leaking gas or oil it can't be right.

620 j16 have it engine(change it few year the j15)

kyosan denki 2-1 write the body,if can help this information

[Scgreen620]

If you don't have a Nikki I say you replace it it looks like it's one piece

[inazuma]

If you don't have a Nikki I say you replace it it looks like it's one piece

Can help the by it correct model ;;

[Scgreen620]

You have the correct pump yours isn't rebuild able

[datzenmike]

That's not a Nissan pump.They are rebuildable if you can find the parts. That is some generic replacement pump.

 

 

It's simple... if leaking oil or gas it needs to be replaced. It may still work fine but it isn't right.

[inazuma]

ok thanks both,for the information..

can help me,find the correct fuel pump (j16 engine) oem number;;

[datzenmike]

I don't have J16 info.

[inazuma]

I don't have J16 info.

i think j15 engine it's same,have it info for this engine code;;