Jdhogg

I have had many turbo cars through the years. One of the first things I do is replace/ upgrade the fuel pump.

I have an X50, tune and exhaust with 69k on it. Anyone know the approximate life expectancy of the factory pump? I have read about the fuel line issue.

I'm not concerned about more volume at this point, but am considering a Silly Rabbit system.

Any thoughts?

clsund1

Tagging along

Kevin

I would replace it with the factory 996TT pump.

For a tune with stock turbochargers, it does the job.

Datalog your injector duty cycle and AFR's..

The first sign of a failing pump/hose system is the car stalling in the morning or coasting to a red light.

In the last 18 months I am aware of 7 to 8 pump replacements!

wross996tt

good question although I would "guess" the data would be poor. Why?, because pumps are likely replaced for ANY fuel related symptoms even if they are still good. Hose ruptures I think are way more frequent and may be a function of design (have you seen the bend in the hose) and fuel quality???

Kevin

As Bill has mentioned, the stock fuel pump rarely fails.. And since you cannot just order the replacement pump. The Pump assy must be purchased. The Venturi lift pumps need to be also need to be looked at.

The nylon hose and rubber hoses split/rupture..

As a side note: If you DE your car and have not had a new updated pump in the last 10 years or just don't know.. I'd add it to the TOO do list..

911mhawk

I decided to buy a new one for install while I've been updating other 13 year old parts that are not necessarily "worn out". After getting a tune from Kevin, and driving the car awhile, we discussed my use at the track.

Google "turbo engine fuel starvation" if you have any questions about whether a new pump would be good preventative maintenance. There are some very serious consequences to consider. Detonation is a killer for any engine, especially ones that have nitrous, supercharger or turbo. Do 2 turbo's make it twice as bad?

Running out of gas, fuel starvation, low tank and pickup gets a breath of air, relay fails, fuse pops, pump fails, etc. Any of these were good enough reasons for me to decide on upgrading the system, based on my intended use. Despite the stock pump rarely failing, taxing it on track with lots of WOT is not something most street cars see. Hold the pedal 3/4 >floor around town for 30-60 minutes and you'll notice single digit gas mileage if you still have your license. Do that a few times a year at track/DE on 10-15 year old fuel components and you could end up with unanticipated problems. Not trying to be a fear monger, but lots of people spend $ on power forgetting where it comes from.

I have taken the plan for worst case scenario attitude with this car because I like it a lot. I also like not spending a S ton on things that can be avoided.

Jdhogg

Yea, I have had quite a few turbo cars and always upgrade the fuel pump as one of the first things.

I guess my question is- does the stock fuel pump typically fail at XXXXX miles?

Should I put the $ for a stock pump towards a SR system?

Thanks

Mtrboatvr6

Mine died while my wife and I were out visiting family in a fairly rurual area. My turbo had 36k miles when it happened. I was really surprised to say the least. Ive never had a fuel pump fail even on cars like my 98 B5 A4 Avant Quattro with 200k miles on it. Mine must have been made the Friday before a long weekend for someone LOL! Replaced it at the dealer after at tow, all has been well since. I have heard that the hoses are a more common problem than the actual pump itself, so mine may have been somewhat of an isolated incedent. Just my 2cents!

32krazy!

I can get you a good deal on a srm kit if you want it. For your current setup a walbro pump can be installed and the accordian lines replaced w/teflon lines for a cheap upgrade

SirChonkyFire

On the stock 2001 Turbo I use to have it went at around 42k miles. I did notice that the fuel gauge was not reading accurately for a few months prior to the failure, not sure if it was related or not.

superboyg

Mine gone in a mystery way which made me to troubleshoot for couple months, the first common issue is small hose which made the car was not starting while low fuel level, and the pump itself wasnt pushing the right pressure, but only hesitate above 5k rpm...it was a nightmate

"02996ttx50

mine went in my driveway. ignition, engine on, then fail upon throttle input. feels just like a f-pump failure. happens at the darndest times, absent warning.

split71

Replaced mine this year on my '02 ~ 63k miles. Had hesitation issues, fuel line out of pump was partially clogged and replaced pump for good measure.

I run an EPL 91 Tune with Billet K16's and all the goodies to go along with it.

911mhawk

This happened in my driveway:

https://rennlist.com/forums/996-turb...p-install.html

"02996ttx50

yeah, it's weird. no warning no stalls just died. strange part is it idled no problem.