fuel

tldr: I have spark, but I don't know exactly how to check for fuel on this car. Got slight combustion with brake cleaner into tb. Nothing at all without. I do not have an accessport, but I do have a generic code reader, and vcds for audi/vw that may give more information than the generic one...

Howdy everyone! I have a 2012 speed 3 that has a rebuilt motor (I bought the car from copart with a spun rod bearing and spent a year rebuilding the engine). Been running good for about a month. One day while driving it, the car stalled out. It would crank back up and run for about 10-15...

Encountered a single cell within a datalog that made me wonder if I'm experiencing a fuel pressure issue or simply seeing signs of a sensor on its way out. Full datalog is attached, but here's the cell in question. Anybody have any thoughts?

I'll try to make it as short and detailed as possible. Got a 2010 ms3. Been doing basic maintenance on my speed the past year. After 15 short months finally got the speed3 back on the road. New turbo, New head, New injectors, timing chain, coils, spark plugs. I got the car in driving condition...

This might help those who anyone who's experiencing fueling issues and reading 0psi of HPFP fuel pressure, or those who swapped in a JDM motor to replace their stock one like I did. TLDR: Bosch 0261545038 is the sensor you need, use a 27mm deep well socket to remove/install. The stock motor on...

EDIT: The fuel pressure sensor itself was my issue, not the ITFP relief valve. I wrote a thread about replacing it. After swapping the motor in my 2012 Speed3 at the end of July because the stock one threw a rod I started experiencing some fueling issues. The engine ran great across the rev...

I bought a new to me MS6 and I recently ran out of gas with just over a quarter of a tank. I filled up and the gauge was almost 1/4 tank over the full mark. I pulled the fuel pump unit today and tested the float by pulling the fuel pump relay and then connecting the harness to the top and...

Update 3/1/2022: This issue has been resolved. Spill valve was responsible for 60psi drops and PRV was responsible for for fuel pressure never exceeding ~1700psi. Year/Make/Model: 2008 Mazdaspeed3 Mileage: 160K chassis / <1K motor Location: AZ Concern: Fuel pressure drops to in-tank pump...

Hi fellows, this could be interesting (Android users)

The OEM fuel system with e30 is good to about 370whp or so before you start to see some wild IDC "injector duty cycle" To fix this people will run port injection on top of the direct injection system. This provides fuel when you need it the most "higher boost" and supplements the OEM system...

After playing the mixing game for too long I decided I would like to try out a fuel cell and just run straight corn in it. I looked at a lot of options and moving the battery or doing a trunk cell but with small kids in the car I did not want fuel in the cabin. So here we go. This is as budget...

So i just recently got my MS3 up and running pretty good. I was seeing close to 0 LTFT, and was making about 19PSI at WOT with the Cobb Stage 3 OTS tune. On Monday i had my first hiccup, my LTFT shot to -20.88 and are stuck there no matter what throttle position (other than WOT). The engine is...

I've recently been experiencing an issue where on partial throttle (mainly) my BOV will activate randomly and quickly, to where the car sounds like it's sneezing. The pedal position is constant however the wastegate appears to get the signal to dump the boost momentarily before it builds back up...

Hey all, I'm new to the site so sorry if this has been asked before. ( i searched and couldn't find anything.) My 2009 Mazdaspeed 3 is having issues with randomly cutting or losing hpfp pressure, and crazy FT. I randomly get P2178/P2188 at least once a day. My fuel trims will go anywhere from...

So I bought my first gen about 4 months ago knowing it needed some work. I just pulled the transmission to do a clutch and flywheel job. When doing so I noticed an aftermarket turbo. This car has no tune and is bone stock all the way around. Its a mahle 627 TC 20002 000 which is a twinscroll...

The stock mazda fuel wire appears to be 14-12awg it might be less but it is hard to tell. I was having some strange lean issues and this seemed to help. I re-wired the pump with a dedicated 10awg wire and a relay. The hellcat pump can def pull more amps than the stock stuff is rated for. I am...

I finished my port injection setup and I have noticed a strange issue. I thought I was alone in this but it appears that @andale927 and @Bigelow have similar issues. The issue I have noticed is that the FPR is pulsing, it will pulse + or - 3psi at idle. This pulse can be both heard and felt in...

Hello Everyone, ive done the research that i can to find a solution to my problem but the only two threads that had the same problem as me never updated with a solution. I was running a 3rd gear pull while data logging because of a fuel cut i was getting. As you can see my fuel pressure is now...

I'm about to pull the trigger on used Autotech HPFP internals, what should I look out for? I think they have about 10K miles on them. Any risks buying used? FYI they will set me back $250. TIA