Offshoreonly.com - 500 EFI fuel pump oil?

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- - 500 EFI fuel pump oil? (https://www.offshoreonly.com/forums/general-q/332109-500-efi-fuel-pump-oil.html)

VoodooRob

11-06-2015 08:18 PM

Quote:

Originally Posted by Pwraddr (Post 4373468)

Curious how often you change your oil.

Most I let it go is 25 hrs, a full season for us. If doing more hrs. I'll change mid-season. Same goes for the drives.

VoodooRob

11-06-2015 08:21 PM

Quote:

Originally Posted by JaayTeee (Post 4373402)

Some of the very first 500efi's 99-00 didn't have them.

Didn't know the early 500 EFI was set-up like that, good to know for reference. Good catch.

1989mach1

11-06-2015 08:43 PM

I will have to look tomorrow when I get to my boat.

billpor930

11-07-2015 07:46 AM

Quote:

Originally Posted by VoodooRob (Post 4373370)

Yes, 500 and 525 EFI. Always change the lube when changing oil, it only takes a few minutes with a mity-vac. As a matter of course I change impeller, impeller housing, and change oil in pump when doing an oil change.

Actually, the earlier 500 efi's don't have this mechanical fuel pump which includes those in my 2000 Formula. My setup has worked fine as I've experienced no vapor locking problems. This is likely due to my boating area not being as hot as inland lake boating.

1989mach1

11-09-2015 05:53 PM

I looked at my motors over the weekend and I do not have that kind of pumps.

1989mach1

11-09-2015 05:55 PM

Is there a big difference between the two ways?

TROR	11-18-2015 10:09 PM

Ok, do you have to pull the fuel pump off to change the oil? I have a vac, but can't get anything in the hole to suck it out. Can't believe there's no drain hole.

TROR	11-18-2015 11:22 PM

Ok, made me a little tube out of a chunk of steel brake line. Just wondering how y'all do it.

Griff

11-19-2015 01:40 AM

You can only get about half the lube out with suction through the fill hole.

thirdchildhood

11-19-2015 04:59 AM

I pull the whole assembly off every fall during winterizing and it gets a new impeller and new oil. There is always some gas in the oil.

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