502 Fuel Line
 

I am looking for a fuel line for my 1999 502 Mag MPI. Part number: 32-861729A1

I am fine with purchasing the full line and fuel cooler/pump as a whole. that I believe is part number: 8M0125847 and 861156A1

I might have this. I’ll take a look this evening.

Thank you. pictures are appreciated. if easier we can go through email.

Haven't had a chance to dig into the parts from the 502 MPI - I think you were looking at maybe reengineering what you had. If you're still interested in the original part, let me know - if so - when I get a chance to this evening, I'll see if I can find it. I should have at least one.

yes still interested. My new fuel rail (picture below) needs a line with an end like below pictured.
I’d rather have the whole line so I can take out the old (the old ends wont work) and just swap with another merc line. I just need one line as the top is the supply bottom isn’t needed.

I am also open to get the fuel pump and cooler as well. Since I have the motor out I may swap those too since it’s easier.

https://cimg0.ibsrv.net/gimg/www.off...8fc0926b7.jpeg
https://cimg1.ibsrv.net/gimg/www.off...5f29fc892.jpeg

How’s that going to work? That’s not a Cool Fuel rail. The Cool Fuel rail has a plug on one end and a valve on the other end to measure pressure.

The hoses that I have are for the Cool Fuel rail and the line bolts to the side with a brass brick.

Looks like the rail for the VST and not cool fuel

The VST has a plus and minus
Plus - the Reg on front of the rail sends excess fuel back to VST tank. This line can be sent back to fuel tank to stop vapor lock
https://www.mercruiserparts.com/bam/.../31910/2336/10
Minus - Without the VST need to reroute return somewhere

Hose
 

I have the hose you are looking for 50.00
Ron Sporl
504-616-6005

thanks for the info. According to the diagram this is the same rail as my SN. Here is screen shot showing cool fuel system (look at the model number motor at top) and the rail. Both same motor.

Am I missing anything?


https://cimg0.ibsrv.net/gimg/www.off...20419dd38.jpeg
https://cimg1.ibsrv.net/gimg/www.off...ff92415fe.jpeg

like this?

https://cimg5.ibsrv.net/gimg/www.off...fa92888fd.jpeg

Thats what I have in my parts pile.

My understanding is that there is a span between generations where VST could be on a cool fuel engine or vice versa. 1997-1998 - if I’m remembering correctly.

Are you saying you need the hose like in the last pic or one for the VST rail?

I have a cool system but my intake, fuel rail and injectors are set and that set up look like what you said was for VST. (Picture again below)


I have a 1999 which SN goes to this: LINK
This is the one year that they did things different. Very annoying. They seem to drop the second regulator and kept cool fuel. (while also having a different intake style and injectors.)

From that drawing, it looks like I have the same rail.
That rail looks like it works, the top hole is fuel coming in from my cool fuel, at the other end is threaded for pressure shrader.
the bottom hole just goes right through.
my cool system has no other regulator on the rail.

thoughts?


https://cimg4.ibsrv.net/gimg/www.off...a8297654f.jpeg

All that’s original 1999? It looks like you have the longer injectors too (from the VST setup).

Both of mine were 1998s - they didn’t look anything like that.

So the intake rails and injectors are not 99. The old intake went bad and a old mechanic couldn’t get his hands on a 99 but got this. Then due to this intake being different the injectors changed and now fuel rail.
the 99 year is a hard year to get these parts. I have been trying and coming up wrong, starting with the intake.

But this rail was used on both VST and fuel cool system. Also if you look at the 99 fuel rail it looks identical as a 98 that used a cool fuel system. The only difference is in 98 they had 2 regulators (one at rail and one at fuel cool) and in 99 they only used 1 (according to the BAM drawings)

Thoughts or am I missing something? I am curious if this rail still can work. I THINK all I need is to get the top port of the rail with fuel, one end fuel in and other end a a shrater valve. The bottoms need nothing.

I have rails for that work with the hose with block. Not sure if that would work with your injectors but it may be an option. Or you could just make everything out of AN fittings and high pressure hose (probably easier and look nicer to boot).

I have the rail too. But I don't have the manifold that fits the rail and plugs. The manifold to work with this rail is different than any other years, and makes it hard to find / get. The fuel rail you have have long studs, and makes the injectors not fit.

This 1999 year and model is complete mess. It was for a short time frame and not many motors are around Getting this intake and fuel rail is tough. \
For example, below photos of my model and a 1998 model intake. The 1998 has so many other years / models to get parts from, the 1999 only has 4.


https://cimg3.ibsrv.net/gimg/www.off...2f1c557022.png
https://cimg4.ibsrv.net/gimg/www.off...8029209a5d.png

looking for that fuel line!!
 

I have an engine that burnt, and I am looking for the fuel line like the one in the picture. please let me know if you have one.