We cant even get 10 people to go in on a shepard trans doubt we will get that many people for injectors.

 

I hear ya, I think the only way to get hi-flow injectors, is to wait..
or
really wait [like two+ years] when the ecotec platform gets more attention from GM or aftermarket vendors..

 

That and I am willing to bet money Bosch would laugh at 40-50 orders. They are probably looking to get thousands of orders. What we need is a big company to contract them to do this.

OR

Maybe we get together with the VW people and we all put our minds (and money) together to try and get Bosch to give it up.

 

We gotta do something. Is anyone near RAI Motorsports?
3916 North Point Road Dundalk, MD 21222

They are very big on the VW scene and if any vendors should try anything it should be to team with them. They are doing the injectors with the TSI with the Ford ecoboost engines. Maybe we can do something.

 

So after getting most of the remaining parts delivered on Thursday afternoon [8/9] : new fuel filters, both HPFP lines & sensors [injector/ vapor].. the HPFP is being delivered this week [back order].. I was hoping to get Matt a few data logs so he can look at them.. and resolve this once and for all..

This past Friday morning [8/10] the car decided to say F/U, it wouldn't turn over at all [hard start], in the past i had problem with the key, so i thought it was the key acting up again.. [there is GM Bulletin on replacing the key cylinder b/c of faulty key cylinder design] so i figured why not put the car on the lift and while the key cyl replacement is being shipped to me..

I figured do a diag first.. I come to find out - the fuel pump stopped working?? WTF?? after checking a few times and listening for the pump to turn on while it was still in the tank, it was no-go.. WTF>???? so I dropped the tank pulled out the pump, dumped at least 1/4 tank of fuel on the floor.. at that point I was really pissed.. and the crazy part is the fuel sock is clean - not brown or dirty with particulate.. checked everything.. fuel power lines/connections/ at both ends, to/from the ECM & fuel pump.. still nothing - no short to ground.. but at least i have power to fuel pump..

so I called Aeromotive about the problem, they gave me RGA# and told me to send in the pump so they can look at it.. but he also told me the pump may or may not be repaired or replaced b/c the pump isn't really designed for street use.. I told the guy the pump was installed less than 7 months ago and he did ask about what fuels I was using, I told him what I was using, 93, 104, 110 & e47 mix for while before fully switching over to e85 within the last five months.. but he told me they will look at it and call me with there decision once the pump gets there..

I'm not sure what to do next.. order the new Walbro 450lph E85 pump or stick with the OEM pump for now? this really sucks - but at least it's a learning curve - not happy - but learning something new..

 

Go with the bigger pump if you plan on running e85. It will just be easier for it to move it.

 

Good look with Aeromotive, mine died in my LSJ running E85 after maybe two months, picked it up from ZZP. Needless to say I'm out whatever it cost and got offered a new pump at a slightly reduced price since it isn't on their application list.

No problem with the DW300 so far... (cross fingers).

 

The Aeromotive pump is known for getting destroyed by E85. Get this...

DW300 Fuel Pump Tech | DeatschWerks.com

 

the thing that got me, was the fact I just tested the Aeromotive FP almost two weeks ago, and it was working fine - no hiccups..

the Deatschwerks, Bosch & Denso was on my list, but I got the Walbro [F90000267] 450lph e85-compatible FP w/ the install kit.. I like the fact that I could run all fuel types [e85, street & race fuel] with this pump without any worries..

it sucks the Aeromotive pump failed, but after researching online and finding more folks are having problems running this pump with "heating" & "corrosion" with using "mixed" fuels.. makes me wonder if the Buick GS pump [e85-compatible] would be the best option for running e85 on the LNF setup since it's a Bosch unit and also provided with the fact LNF injector seals have been changed for e-fuels..

here's a good report/test on the for-mentioned fuel pumps, to get an idea on what pumps to use for any application - realstreetperformance.com

the test doesn't include the new Walbro pump because the test took place before the pump came out, again a great guide to get an idea on which pump to choose from depending on the application..

 

So after what happened to Cubaniche recently, I doubt that much of the sound we hear is the piston/rod at all.

He recently had a bad fuel rail sensor, causing the fuel rail reading to register 20,000kpa. This caused the fuel pump regulator to not pump any fuel out of the HPFP into the rail (he was running off of only the lift pump basically) despite the fact that the piston was still getting stroked by the cams. It made little to no noise when it was like that. Once he fixed the fuel rail pressure sensor, it was back to normal, along with the noise.

In other words, that must mean the noise is related to the regulator, not necessarily the piston/rod.

Just my $.02 based on observation.

 

I see what your thinking, it would make common sense, but it's the piston/rod making the "ticking" noise, once the regulator got changed the "ticking" came back, the regulator basically has no moving parts to make the "ticking" noise, it just controls the flow of fuel i.e: higher the flow rate = louder/higher tick sound, lower flow rate = quieter /lower tick sound.. whats controlling the fuel flow rate is the LPFP to the HPFP..

 

We're a lost for ideas.. In the last few days, my car has been misfiring on all cyl.. P0300/301/302/303/304.. We almost replaced every fuel system component up to now, I had a 30yr GM Master Tech look at my car over the last few days and we still can't figure out why it's misfiring.. the car still has a hard time starting, but once it turns over, it runs normal, fine and smooth, but once I drive along in any gear, out of nowhere it starts bucking HARD and "Reduced ENG PWR" & MIL flashes..

This is what I've done so far..

- Replaced the HPFP to a brand new HPFP.. the HPFP stopped ticking two weeks ago - which was one of the original concerns..

- Replaced the fuel rail sensor with a new sensor - I wasn't getting any readings on the RPD / Tech2 for fuel pressure when the HPFP died. I now have variable readings!! low readings & high readings!!! which is good news - Tech2 shows I can command fuel pressure in the system!!

- Replaced the in-tank fuel pump Aeromotive fuel pump back to a brand new stock fuel pump assy.. found the Aeromotive FP electrical terminals was corroded - even though I did a VOM check two weeks ago and it was working then, but I didn't pull it out and do a visual inspection until a few days ago.. I have a new e-85 compatible Walbro 450lph FP on hand - I will install it once we have this figured out..

- I've stopped using e-85, since I found out the electrical terminals was corroded on the fuel pump, I did this to prevent or start any other new issues that may pop up when I installed the brand new stock Fuel Pump, since the new fuel pump assy is "on loan from the shop"..

- Fully flushed & drained any remaining e-85 fuel in the tanks & lines.. filled/bled the fuel system with 93 to the fuel rail..

- I've reflashed twice the ecm with the original ZZP S256 & S256 w/ the 5th Inj tunes - both untouched or modified, when I drained the e-85 and filled it with 93, still having the same issue..

- Replaced both fuel lines [fore & aft] that are connected to the HPFP.. as required per GM service information..

- I've pulled the spark plugs last night and replaced them with new AC/Delco IR set gaped @ 30 - still gettting P0300 and a flashing MIL & "Reduced ENG PWR"..

- Checked Coil sticks after visual inspection, they look fine no damage to them.. it's possible one or all of them could have died, but the possibly of all them quitting is slim..

- I've checked all of the vacuum lines, charge pipes, couplers.. found nothing, no leaks..

- I've checked the exhaust, found nothing loose or exhaust leaks..

- Checked battery voltage - it's fine- it's at 14.1 volts, SOC@93%..

- Installed a brand new gas pedal, since the car had a throttle response issue during WOT at the ZZP LNF meet...

- next on the list is the fuel rail/injector setup, but it's not going to be delivered to me until this week..

I've ordered new coil packs this morning, just in case..

talked about headaches.. at least it's a learning experience..

 

Thanks to Matt@ZZP for helping out - we found out the dials on the 5th Injector controller was turned all the way to left which caused the misfires.. after the fact he told me in the beginning "Not to turn the dials to the left".. which I did.. oops..

I was thinking - by turning the dials to the left would stop the flow of fuel, but it was the opposite, by the turning them to the left - it releases the fuel at a low boost setting.. by turning them to all the way to right starts the flow of fuel at a high boost setting..

After a few back n fourth emails and data logs, he figured it out!!

 

^^ That's awesome. He's pretty good at figuring stuff out as I have learned first hand myself.

 

No problem, Rudy. Hopefully the TPS issue will get resolved as well. Your car will be pretty fast on the E85 tune.

 

thanks Matt, I learn something every day..

I now know the cause & effect from troubleshooting & the lack of fuel in the system..

- LPFP #1: when the LPFP dies there is high possibly the fuel pressure sensor [on the fuel rail] will die too, b/c the sensor will short out when there is a lack of fuel in the fuel rail and/or in the HPFP..

- LPFP #2: if you can't hear the LPFP turning on, and your going to test it with VOM at the female connector - make sure your power supply is coming from the battery NOT from the LPFP power line, the line is powered [KO/EO= Key ON / Engine Off] but you run the risk of popping a fuse and/or frying a ECM - use a ground strap to your wrist.. [found a customer had done this and he fried his ECM - ECM isn't static friendly]

- HPFP #1: when the HPFP dies - the "ticking" sound you normally hear - stops, the HPFP died.. [you cant fix it, it becomes a paper weight.]

- HPFP #2: when the HPFP dies - the VOM will either show no resistance [crazy high or low or no ohm reading] or "short to ground" from a cut wire connected to HPFP [customer had frayed wires from the steel support elbow holding the upper charge pipe]..

- HPFP fore & aft fuel lines #1: when you unscrew both lines from the HPFP, they MUST be replaced with NEW lines, USED LINES WILL HAVE PARTICULATES IN THEM which will kill the HPFP, Fuel rail and the Injectors all in one shot.. cleaning them is useless - if you do, it may void your warranty..

- HPFP fore & aft fuel lines #2: be careful when touching the fuel service port, try not to "Force" open the plastic cap if it is stuck.. the welds on them isn't strong enough from constant servicing or touching or bending - it will crack.. [a trick I've used to open old mason jars - use a wet shop rag that is soaked in really hot water - it will open from the heat.]

- Used Fuel rails w/o Injectors - say good by to the fuel injectors - they MUST be replaced with a NEW rail, USED FUEL RAIL WILL HAVE PARTICULATES IN THEM which you run the risk of clogging the injectors and/or complete engine failure.. cleaning them yourself is useless, they must be cleaned by a professional shop..

- Used Fuel rails w/ Injectors - say good by to the engine - they MUST be replaced with a NEW setup, USED FUEL RAIL SETUP WILL HAVE PARTICULATES IN THEM which I found on a various used 04-11 Ecotec's.. the particulates will sit in them and build up over time.. it easy to replace it with a new one, then replacing it twice because of a used set.. again - cleaning them yourself is useless, they must be cleaned by a professional shop..

- NEW Fuel injector Rail w/ Injectors Assy - make sure you use LIQUID TEFLON on the treads and DO NOT get any of it inside of the holes, ANYTHING ELSE WILL LEAK FUEL.. I have found using anything else WILL leak fuel, not sure if the fuel is doing this or it's by design?..




Just a little inside scoop of me - working on fuel issues for the last three weeks, and I've also found when working on other customers Ecotec's..