Low Fuel Pressure

Yeah, a Diesel Tacoma, that would be the thing. Personally saw plenty of these in places like Iraq, Kuwait, Haiti, Thailand, Japan, Austraila, etc. Why aren't they available for the US market? Either way, that's rich topic for another thread.

Some of the folks who have close connections with Mechanics who work at the Dealership who have replaced one of those drilled out tanks may know a lot about screens in the tube to defeat chunky foreign bodies or syphon hoses in the Gen 3 Tacomas. We'll just have to await their input, or wait another 2 weeks for my current cider brew to complete and I can use my blow-off tube to test my tank. If it can't go down........I'm really gonna be wondering how that stuff made it into my tank you know.

 

Wow, this makes me seriously consider a locking gas cap. Wow...

 

You can’t win- had a locking gas cap and got tank drilled by gas thief, don’t have locking gas cap now and am waiting for the next gas thief (or I hope not worse).

 

The current EPA standards in the states on new Diesel make it not worthwhile. The new standards kill power and mileage. Thus the reason VW tried to cheat the system. Never say never but I seriously doubt it.

 

I've tried 2 different locking gas caps and eventually they ALL end up throwing a CEL for evap.... and it takes a loooong time for that "permanent" code to roll off the history even once you clear it.

 

I think you could use a camera "snake".... I see the US customs checking gas tanks at Nogalas/US border..!!

 

Now that you mention it, I've seen that as well. I think their equipment is a wee bit of an upgrade over my PT (Performance Tool) W50045 video scope.
While it is advertised as "submersible," at least the probe that is, the manual does say "Do not operate the Camera in explosive atmospheres, such as in the presence of flammable liquids, gases, or heavy dust." http://www.wilmarcorp.com/files/W50045_Manual.pdf Not like they had that in big bold print, so I'm wondering how many intrepid adventurers have lit themselves up poking into gas tanks. Likely a Darwin Award.

So how do the CBP (customs and border protection) dudes get away with it? Likely a completely different setup. I have a vast experience with Medical/Surgical endoscopic equipment, and video laparoscopic/thoracoscopic equipment, as well as decades of practical application and usage of these devices, and the light source on these is back in the machine end of the scope. The light travels down a flexible fiberoptic cable thru the lens stack, so there is nothing electrical going on at the business end of this equipment. I don't have one of these available to me, but have a buddy with a Veterinary clinic that may shut down in a few years and then I can likely purchase their flexible endoscopy equipment for this sort of usage. In the meantime, despite the limitation of my scope, it is still an extremely useful and valuable tool for me.

 

Sounds like the CBP would have THE best product available..... I'd suggest you borrow the camera from that VET and try it......

I want video of the next cat he shoves that camera into... hehe... (I've heard that cats do not like gas on their ass holes)... hehe

 

Seems reasonable, but the Vet is in KY, I'm in HI. But at any rate, I'm going to shove a hose here soon enough and will have an answer. It's just that the hose I want to sacrifice to that purpose is currently in use.

 

You know, you could make the tank less flammable by discharging a CO2 tank into it to vacate the oxygen in there- the weight of the CO2 would also “cap” the fuel vapors in the tank and away from the entrance hole... but I’d rather watch someone else try it with their own truck.

 

You sound like a shit-disturber..... Just like me...hehe.!!
We need videos..!!

 

By the way- is the plastic wheel well liner damaged anywhere near or around the rubber fuel tank filler pipe inside the wheel well in any way? Wondering if the PO had the pipe cut into by gas thieves like what happened to another member here. There would have been a large enough hole to drop that bolt in the tube if it was cut, if so, someone may have been trying to plug the hole in the tube with a gauze wrapped bolt?

 

Yeah, I have a CO2 tank, as well as Argon, and I could fill the open space in my tank with inert gas..........

BUT

I've already procreated 3 sons, and would not get a Darwin Award for blowing myself up. I think this is gonna just fall into the NFW general category.

 

Bill Nye junkie

 

No, seems unlikely. No wheel well liner damage, etc.

 

You can still get the golden Darwin Award if you take them all out too, or if each one does something similar and, well...

 

Saw the aftermath of what happened after a guy cut into a pulled underground fuel storage tank - one of the 8-foot diameter ends popped off and shot across a nearby 4-lane road and hit midway up a 5 story bank building dead on - it fell to the sidewalk below narrowly missing pedestrians and bank employees going out for lunch! Yup, even though they are much smaller, our truck fuel tanks are not to be messed with.

 

A buddy who is currently babysitting a '16 Sport DCSB automatic came by, I had some time to play with it and make some comparisons. We took a trip of a few miles and shot his HPFP with the IR--152.6 degrees F. This one has had no stalling issues, I forgot to check the build date though. Maybe will tomorrow.

 

-152 degrees F? Gas freezes around -60F so that fuel ice could be a real problem!

I didn’t know those pumps got so hot, with the fuel nearly at boiling temp and vaporizing in the line near the pump, it’s at a very high pressure. Sure wouldn’t want a leak in that part of the fuel system!

 

Sorry, I shoulda used : (colon) rather than dashes, especially on TW!!! Yeah, they seem to get hot/have hot operating temperatures, and this seems to be data we're collecting to understand more of our Gen 3s.

I found and downloaded a pretty lengthy document which was Toyota's overview of the Gen 3 Tacoma specs, I can't find it now, but the HPFP generates pressures from 2-20Megasomethingorothers which I translated to 290-2900PSI. It did not specify an operating temperature range, but now I really wish I could find where that downloaded document went so I can link the PDF.

Can't seem to link the PDF, maybe try this page.

NEW FEATURES – 2GR-FKS ENGINE 103

4. Function of Main Components

The D-4S system has the following components and functions:

Component

Function

Fuel Pump Assembly (for Low Pressure)

The newly adopted full-demand variable fuel pressure system controls fuel pressure in a range between 300 and 530 kPa.

Fuel Pump Assembly (for High Pressure)

Increases the pressure of the fuel from the fuel pump assembly (for low pressure) to a pressure of 2 to 20 MPa and sends it to the fuel delivery pipe sub-assembly (for direct injection).

Spill Control Valve

Closes and opens the fuel flow path to the high-pressure fuel system in accordance with signals from the ECM.

Fuel Pressure Pulsation Damper

Reduces fuel pressure fluctuation (pulsation) and noise.

Fuel Delivery Pipe Sub-assembly (for Port Injection)

Delivers the low-pressure fuel to the fuel injector assembly (for port injection).

Fuel Delivery Pipe Sub-assembly (for Direct Injection)

Delivers the high-pressure fuel to the fuel injector assembly (for direct injection).

Fuel Pressure Sensor (for Low Pressure)

Detects a fuel pressure in the low pressure fuel pipe, and output it to the ECM.

Fuel Pressure Sensor (for High Pressure)

Detects a fuel pressure in the high pressure fuel pipe, and output it to the ECM.

Fuel Injector Assembly (for Port Injection)

Fuel is injected for an optimum injection period calculated by the ECM in accordance with the fuel pressure detected by the fuel pressure sensor.

Fuel Injector Assembly (for Direct Injection)

Injects a calculated (by the ECM) quantity of 2 to 20 MPa (high pressure) fuel directly into the combustion chamber.

Fuel Pump Control ECU

Receives signals, output from the ECM, requesting the fuel pump to be driven, and controls the fuel pump (low pressure) in accordance with the received signals.

ECM

D Calculates low pressure fuel demand based on vehicle state and the signals sent from various sensors, and outputs signals requesting the fuel pump to be driven to the fuel pump control ECU.

D Depending on the vehicle condition, and based on signals from various sensors, the ECM calculates the optimal injection timing and volume, and controls the fuel injector assembly (for direct injection) and fuel pump assembly (for high pressure).