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ZUKIWORLD Discussion Forum => Technical Discussion - Beginner / Repair => Topic started by: basscatlildave on March 18, 2019, 03:23:56 PM

Title: Fuel Pump
Post by: basscatlildave on March 18, 2019, 03:23:56 PM

I just picked up an 88 Samurai . They told me the gas tank is bad so it was running off a jug under the hood. The fuel pump has 4 lines on it. I understand in out and return. What is the 4th line used for?

Title: Re: Fuel Pump
Post by: fordem on March 18, 2019, 05:23:06 PM

If it's an OEM style pump, the fourth connection is a "vent" - if the diaphragm fails, you'll see oil dripping from it.

Title: Re: Fuel Pump
Post by: basscatlildave on March 19, 2019, 05:37:26 AM

Well ok. That explains why it has oil dripping out of it. It's still seems to be pumping fine but I'll change it out.  ;)

Quote from: fordem on March 18, 2019, 05:23:06 PM

If it's an OEM style pump, the fourth connection is a "vent" - if the diaphragm fails, you'll see oil dripping from it.

Title: Re: Fuel Pump
Post by: Zuk-E on March 19, 2019, 07:11:21 AM

The mechanical pump is cheap and easy to replace.