[Z06] Stock Fuel Pump failure with E85??
#1
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Stock Fuel Pump failure with E85??
anyone had any problems running E85 with the stock fuel pump?? I had two stock fuel pumps fail on me ever since I ran E85.
first pump went out 6 months after switching to E85 (3 months of actual driving with about 3k miles) the other 3 months the car was parked.
The 2nd one which was brand new failed after 9 months (3 months of actual driving and about 3k miles too!!!!) the other 6 months the car was parked since I was building my engine, not sure if that caused the problem?? I ran the car for almost 2 months after the rebuilt and one month prior.
anyone else had the same problem??? is it just my luck? the dealership said the main cause was E85 and that nothing wrong with the pump they installed. They said something about E85 causing corrosion ...etc to the pump internals?
one thing that I want to mention is that few days before the incident I ran the car way below the E mark (to a point where the car almost died when I got to the gas station to get some fuel) but NEVER ran less the 1/4 of tank since I had that pump installed. actually it was mostly over 1/2 tank.
I just installed a new pump, and the car is stored right now (for exactly one month) with a little over 1/2 of fuel.
any idea on what causing those pumps to fail?? anyone had any similar problems with the stock Z06 fuel pumps? Carlos??
Thanks
first pump went out 6 months after switching to E85 (3 months of actual driving with about 3k miles) the other 3 months the car was parked.
The 2nd one which was brand new failed after 9 months (3 months of actual driving and about 3k miles too!!!!) the other 6 months the car was parked since I was building my engine, not sure if that caused the problem?? I ran the car for almost 2 months after the rebuilt and one month prior.
anyone else had the same problem??? is it just my luck? the dealership said the main cause was E85 and that nothing wrong with the pump they installed. They said something about E85 causing corrosion ...etc to the pump internals?
one thing that I want to mention is that few days before the incident I ran the car way below the E mark (to a point where the car almost died when I got to the gas station to get some fuel) but NEVER ran less the 1/4 of tank since I had that pump installed. actually it was mostly over 1/2 tank.
I just installed a new pump, and the car is stored right now (for exactly one month) with a little over 1/2 of fuel.
any idea on what causing those pumps to fail?? anyone had any similar problems with the stock Z06 fuel pumps? Carlos??
Thanks
#2
Former Vendor
anyone had any problems running E85 with the stock fuel pump?? I had two stock fuel pumps fail on me ever since I ran E85.
first pump went out 6 months after switching to E85 (3 months of actual driving with about 3k miles) the other 3 months the car was parked.
The 2nd one which was brand new failed after 9 months (3 months of actual driving and about 3k miles too!!!!) the other 6 months the car was parked since I was building my engine, not sure if that caused the problem?? I ran the car for almost 2 months after the rebuilt and one month prior.
anyone else had the same problem??? is it just my luck? the dealership said the main cause was E85 and that nothing wrong with the pump they installed. They said something about E85 causing corrosion ...etc to the pump internals?
one thing that I want to mention is that few days before the incident I ran the car way below the E mark (to a point where the car almost died when I got to the gas station to get some fuel) but NEVER ran less the 1/4 of tank since I had that pump installed. actually it was mostly over 1/2 tank.
I just installed a new pump, and the car is stored right now (for exactly one month) with a little over 1/2 of fuel.
any idea on what causing those pumps to fail?? anyone had any similar problems with the stock Z06 fuel pumps? Carlos??
Thanks
first pump went out 6 months after switching to E85 (3 months of actual driving with about 3k miles) the other 3 months the car was parked.
The 2nd one which was brand new failed after 9 months (3 months of actual driving and about 3k miles too!!!!) the other 6 months the car was parked since I was building my engine, not sure if that caused the problem?? I ran the car for almost 2 months after the rebuilt and one month prior.
anyone else had the same problem??? is it just my luck? the dealership said the main cause was E85 and that nothing wrong with the pump they installed. They said something about E85 causing corrosion ...etc to the pump internals?
one thing that I want to mention is that few days before the incident I ran the car way below the E mark (to a point where the car almost died when I got to the gas station to get some fuel) but NEVER ran less the 1/4 of tank since I had that pump installed. actually it was mostly over 1/2 tank.
I just installed a new pump, and the car is stored right now (for exactly one month) with a little over 1/2 of fuel.
any idea on what causing those pumps to fail?? anyone had any similar problems with the stock Z06 fuel pumps? Carlos??
Thanks
I haven't heard of this. This may be an isolated case amigo. My car sits for weeks/months and never suffered the same fate.
Ask to see the pump and look for any sign of corrosion. BTW, I've seen new stock pump fail in a matter of days with pump gas....oh yeah
I wondering if your pump is reaching its limits with your current Hi-Po set up. My reached it's limits a while back and I needed to implement the use of a Boost-A-Pump.
Let us know
Thanks,
Carlos
#3
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I haven't heard of this. This may be an isolated case amigo. My car sits for weeks/months and never suffered the same fate.
Ask to see the pump and look for any sign of corrosion. BTW, I've seen new stock pump fail in a matter of days with pump gas....oh yeah
I wondering if your pump is reaching its limits with your current Hi-Po set up. My reached it's limits a while back and I needed to implement the use of a Boost-A-Pump.
Let us know
Thanks,
Carlos
Ask to see the pump and look for any sign of corrosion. BTW, I've seen new stock pump fail in a matter of days with pump gas....oh yeah
I wondering if your pump is reaching its limits with your current Hi-Po set up. My reached it's limits a while back and I needed to implement the use of a Boost-A-Pump.
Let us know
Thanks,
Carlos
I guess its just my luck then. I will be installing boost-a-pump probably end of January before spraying or maybe get Nitrous outlet stand a lone. do you think I will be able to spray 200shot with bap?? I am shooting for 250-300 but I am pretty sure I wont be able to go over 150-200shot with boost-a-pump
Thanks Carlos
#4
Race Director
I dont think I am reaching the limit. remember we are at 5500+ft I am only at ~510whp uncorrected. 615whp is my SAE corrected numbers. Also fuel pressure is great no drops. I did mention that there is no way E85 will cause corrosion in this short period (if it ever does) but then thought I will just keep my mouth shut since it was replaced under warranty LOL.
I guess its just my luck then. I will be installing boost-a-pump probably end of January before spraying or maybe get Nitrous outlet stand a lone. do you think I will be able to spray 200shot with bap?? I am shooting for 250-300 but I am pretty sure I wont be able to go over 150-200shot with boost-a-pump
Thanks Carlos
I guess its just my luck then. I will be installing boost-a-pump probably end of January before spraying or maybe get Nitrous outlet stand a lone. do you think I will be able to spray 200shot with bap?? I am shooting for 250-300 but I am pretty sure I wont be able to go over 150-200shot with boost-a-pump
Thanks Carlos
Last edited by AzDave47; 03-21-2012 at 11:47 PM. Reason: add info on two week failure
#5
Le Mans Master
No expert on Vette in tank fuel pump design, but do know alcohol tends to harden plastic and rubber parts, sometimes to the point things start breaking apart. If your pump contains seals not designed for this, could be the problem.
#6
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bump.... third pump. this one I just put in end of December. seems like the regulator went bad.... I am guessing E85 has something to do with it.
how many people are running E85 on the stock pump and how long? miles?
how many people are running E85 on the stock pump and how long? miles?
Last edited by walhan_qtr; 03-21-2012 at 11:41 PM.
#9
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how long hove you been running E85 Ryne? or your customers if you know? it seems fine for few months on mine but then boom it fails. this time the pump itself is working (actually pushing more fuel than what I need, 70psi at idle) seems like the regulator itself is going bad but i thought I would still check.
I know Carlos@vette-air is running the stock pump for about 2 years now with no problems but I dont know why mine doesnt like it. this is the third pump btw!
I know Carlos@vette-air is running the stock pump for about 2 years now with no problems but I dont know why mine doesnt like it. this is the third pump btw!
#11
Le Mans Master
I'm just relating it to my diesel truck in the sense that if I pick up diesel laden with water or let my truck sit for a long time then it absorbs water. Well the water does damage to the injectors and can damage the pump by basically rusting things out. Thats why diesel trucks have water separators that you need to regularly drain.
#12
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I'm just relating it to my diesel truck in the sense that if I pick up diesel laden with water or let my truck sit for a long time then it absorbs water. Well the water does damage to the injectors and can damage the pump by basically rusting things out. Thats why diesel trucks have water separators that you need to regularly drain.
#13
Le Mans Master
interesting... good info I guess. car only sat for ~3-4 weeks with 1/2 tank of e85. then was driven pretty much everyday until last week when the car started acting up and my fuel pressure is now at 70psi at idle. so the tune is all messed up since the car was tuned at 55-60psi
#15
Le Mans Master
Not a stock GM pump but at the shop I work we tune a lot of Subaru's on E85, most just running a Walbro 255 which is close to a stock style pump. Never been an issue and there has been cars with lots of miles and years of running on E85 with no issues.
#16
Safety Car
Ethanol attracts water.
Your Gas is 85% Ethanol.
This is a very interesting read about how to possibly counteract the effects. YMMV.
http://www.ls1.com/forums/f48/been-testing-91206/
#17
Burning Brakes
Aeromotive makes a drop in pump for our cars. But it requires dropping both takes and running new fuel lines.. Car sat all winter and no pump failure this spring. Once we got to around 575rwhp the pump was almost maxed out. This is with 90lb injectors
Last edited by Screamin Z; 03-22-2012 at 01:19 AM.
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Thanks