I really wonder where you guys get your fuel I've never had anything in my tank like you seem to get down there...is it the Hurricanes

 

^It's pump gas I swear, we used to run 87 for our NASA events and 98 Sunoco for the Grand-Am races. I've been running 93 BP fuel with 6oz of Redline 2 stroke every other tank.

 

I8U
only"fix" is a new pump assembly.
Understand your plight--i have an extra pump (only--take the old one out of your assembly and put this one in) that i had track starvation issues with but for the street it did fine. I can mail it to ya if you give me your address. Just keep1/4 tank in there, get a small gauge needle (VERY small gauge--i used a plastic surgeons needle) and go bonzai on the sock. While you have your pump apart backwash the internal filter also--you may be surprised at what comes out.
Like others said clean the tank well also.
all this may let you make it for a little while longer.
OD

 

Yeah, I appreciate it Denny. I'm gonna have my parts guy find me a deal on a new assembly. The dealership here quoted me $152.

-Nic

 

nic,

onlinemazdaparts.com. a vendor here. they are 120 something shipped.

and i have the fuel ring tool if you want to borrow it.

beers

 

Sweet! Thanks for the help Scott. I'll get back with you about the tool...I still gotta get my car back up here from TX.

 

Thanks for the great info guys, I'll order a new pump from mazdamotorsports today.

 

sweet.
OD

 

sure,

you might look at my frankenpump thread. lots of stuff going on, and lots of learning..

btw,

could you have adam send me a pm with a phone # i have to ask him something that we chatted about at mazmart.


beers

 

FRANKENPUMP thread? Can you provide link swoopedog?

 

I was quoted a price of $220 for the 09 fp from mazdamotorsports.
Is this a good price? Should I order anything else?
Extra filter, ring etc.

 

I want to know what the difference is the 09 pump vs the pre 09's. Any info?

 

A new pump will probably NOT fix the issue.
When I started having this problem at the track, it was immediately AFTER installing a new pump.
There are two turns at PIR that slosh all of my fuel to the right saddle tank and there is nothing Ican do to the stock pump to change that.
Its a pickup issue.

I'm looking into simple solutions.

 

How about adding an auxiliary pump to the right side of the tank? I know you said you were looking into simple solutions Jeff, what are thinking of?

-Nic

 

That is exactly what I am thinking.
The question is - is it worthwhile to try an external system with a bulkhead fitting or not?

 

I do know that here in Puerto Rico some people make small fuel tanks in a cilinder shape and put that small tank after one fuel pump and then another fuel pump after the small tank that goes to feed the engine. That way that small tank is always full and if for some reason you dont have fuel pickup from the regular tank you still have gas in your smaller tank to feed the engine.

what do you think about that?

 

I started having this issue this past weekend again. This will be the second pump that I've had this happen on. It gets worse and worse over time. If I filled to the brim I could get maybe 20 minutes in before it started happening again. I'd go fillup and find that I'd only used 4 gallons.

Everybody gets the starvation issue with the stock setup if you let the tank go below a certain point but if you start getting the problem on a full or nearly full tank then replacing the pump will fix the problem for a time.

I'm thinking of trying the 09 pump as well. I wish somebody else would try it first. I've heard a lot of it SHOULD work but haven't heard anybody say they actually did it.

 

I'll tell you from experience, an external pump will still give you the same trouble. We ran external pumps on our Grand-Am cars and still got the fuel starvation and fuel pressure bobble when it got near a 1/4 tank.

Alien brings up a good point though, what he is talking about is a surge tank. I believe OD had talked about making a surge tank but not sure how far the idea got. I wanna know what Brass Mitchell Racing and Meyer are using to help their cause. Maybe Eric will let us in on the secret.

 

I have an extra pump in the passenger side....if anyone is interested in the pros/ cons PM me and I'll do a writeup or something.

It worked great NA...but I haven't tried it with the turbo setup yet to see if I'll have other issues

 

well i now have in my greasy old age spotted hands an 09 pump. Courtesy of mazmaaaaaarrrrrrrrrrttt!! Also long talk with Rick
They rock.
There are MANY changes to the 09 unit.
First the can is car specific --the older one wasnt. it is much better designed.
The pump is now a denso and appears MUCH better built
The sock is much different, not as restricted ,more security attached
The filter outlet (fuel to the car) is now at the bottom of the filter--not the top--know why thats important?
The venturi is also at the bottom as is the fpr.
course fuel filter and sock is now replaceable.
Will install tomorrow
Remember we are looking for good functionality ABOVE 1/4 tank.
Swoope pm me or call? You want this pump.
olddragger

 

Do you anticipate needing to fab any tubing, ect. or is it going to be plug and play?

 

my only "not absolutely sure" thing is the venturi line plug appears to be slightly bigger-- im not positive yet but that MAY need a tad of work--or the line may plug on just fine. I will fine out tomorrow.
OD

 

Denny, may I ask how much you got the pump for? Since I am in the need of pump I was thinking of the 09's.

 

Hey Man-- i was lucky yo fine a used low mileage pump---but you can buy a new one through mazdaspeed for approx 220 or call Paul at Mazmart to see if he can source one?---You dont save much.
OD

 

Thanks anyways Denny, I think I'll bite the bullet and buy a new one. $220 is a great price for a much better quality pump.