DI Fuel Pumps - OEM or High Flow?

[garrettb]

I know this topic has been beat to death, but for my sake, what do those that run DI's prefer? I think my fuel pump is on its way out. The engine bogs with a blip of throttle, and I think it's drawing too much current, which seems to point to failure. My battery isn't charging, and I think it's because the pump is pulling so much. I noticed the High Flow pump kit is down to $80 on eBay. It's almost too good to pass up!

 

[Coastiejoe]

I have read that there are very few aftermarket pumps that hold up. They all start out fine, but then they fail. I'd have to do some digging but I want to say that there are two brands that seem to be ok.

The labor is somewhat intrusive, so be carful about buying a cheap pump. They often have cheap performance,,,

 

[bdesim2]

I have been running the high flow in an xpdi for about two seasons now. It has been working fine so far. Just make sure when installing it is seated properly in the canister.

 

[jhjesse]

If you have not already done so, pull the fuel pump and replace the two internal fuel filters. While you have the pump apart mix a small bucket of toluene and gas. Connect the pump and put the suction side into the mixture. Connect a hose to the other end and run it into another bucket. Turn the pump on and let the mixture flow through it, you might have to do it a couple of times to get all the crap and varnished gas out of the pump.
Once it is clean re assemble it with new the new internal filters and test. You will be suprised how much better the pump will flow.

 

[garrettb]

Maybe I'll take my pump apart and see what I've got going on before buying a new one. I have a suspicion that it's an aftermarket unit, but I'll keep the thread updated as I check out the filters and what not. Thanks guys!

 

[garrettb]

What do you know. Aftermarket fuel pump. Well, at 512 hours, I suppose I shouldn't have expected OEM. What's weird is how this person installed it. It's missing the white plastic retainer that secures the pump to the housing. I also don't know what's going on with that long white tube. The only thing holding it down was the bottom filter at the bottom of the housing. Can someone with a trained eye help me understand what's going on here? Is this a High Flow? No markings on it from what I can tell.

 

[mikidymac]

Forget the fuel pump. I think you have the world record for hours on a 951 [emoji122]

 

[bdesim2]

I second that on the hours. ^

That looks like an early high flow to me.. definitely have something funky going on with that installation. The newer high flows come with the proper hoses to install the pump. At the very least if it was my ski, at least, replace the pump and al the filters including the online high pressure one. Search the forum here for the model number of a wix replacement at about a tenth of the cost of oem. It's been documented numerous times I just can't remember the model off the top of my head.

 

[garrettb]

I should have mentioned that number represents hours on the hull. The engine has been rebuilt by someone (not sure at what hour mark).

It looks like whoever installed this pump did away with the white plastic "sleeve" that fits around the pump body, and the spring sliding seal assembly. I need both to utilize a new pump kit from high flow. Somehow, the pump never came undone from the filter at the bottom of the canister during its life, but that's chancing it too much for me. I want to have a more rigid install.

 

[bdesim2]

So there is nothing compressing the canister together ? Definitely lucky the pump didn't come off the bottom filter.

 

[garrettb]

Nothing! I was just as surprised. I browse eBay from time to time for parts, and just came across a pump module (OEM) from a 2002 GTX. It was only $70, so I pulled the trigger. I am intrigued to see if I'll finally have enough power left over to charge my battery, and if the bog is still exists.

 

[bdesim2]

If the oem fuel pump is still in there you just got the deal of the day.

Change all of the filters. You can get all of them at the local auto parts store. I have seen the filters cause a drop of pressure, especially the in line one that is out of the canister.

 

[garrettb]

It seems to be. I can see the spring seal inside, and there are rivets holding the bottom plate to the housing. I'm optimistic, but I doubt this thing was pressure tested before it was listed for sale. For what I paid I figured it was worth a shot. I'll definitely do the filters before this unit goes back in.

 

[bdesim2]

If it ends up being in the assembly you can clean up the pump with some gas and toluene. Run it through a few times should clear things up. Be very careful... no open sparks etc.