2006-2012 Mazda CX7 Fuel Pump Replacement 2.3 CX-7

DIY 2007 Mazda CX-7 direct injection high pressure fuel pump replacement. 2.3L turbo charged engine. Had codes p0300 for random multiple misfire, p0171 system lean bank 1, fuel pressure sensor low input.
Also applies to
Mazdaspeed 3 2006-2012
Mazdaspeed 6 2005-2007
Cx 7 2006-2012
Had problems with lack of power, sputtering, misfiring, backfiring, shutting off, limp mode and hard start and occasional no start
Thanks for watching fix it phillip. Be sure to like and subscribe and feel free to comment.

[@magdalenoybarra2793]

Thank you for your expertise. Mr Phillip Greetings from Texas.

[@alex3373]

THANKS SO MUCH!!!! Best video to help fix my problem hands down. Saved me $$$!!!

[@opeolaoyesakin2021]

I experience oil dilution on my Mazda CX7 what can possibly be the problem

[@kevinlema5253]

Why did you replace the high pressure pump? Mine will start run for about 3-6 seconds and then die. I can try to refire and it takes a different couple cranks to get it to fire back up

[@elmerguevara4019]

Did your dip-stick when checking the oil level smell like gasoline?

[@firep9930]

where you get the pump?

[@felo3769]

Great video. I keep getting code P0303 and have already done plugs and ignition coil but code keeps coming back. The symptoms I currently have are rough idle and start up, and poor gas mileage, but otherwise the car runs fine. I did notice some oil in the 3 third spark plug initially when I replaced it so I also did valve gasket. Some people have mentioned fuel injector probably needs replacing, but I have also hear the fuel pump can be the issue. I understand the cx7 has two, would it matter changing both or just the high pressure?. The fuel injector seems like a lot of work to get to and was curious if this may clear up the code. I do not have a way to measure fuel pressure like you as that scanner you have looks like a professional tool. Thanks

[@FixItPhillip]

If your only having a misfire on #3 I would lean more towards it possibly an injector issue, do a compression test and see what they are at, if #3 is the same as the others or lower

[@saulvelazquez3018]

MUY BUENAS NOCHES MUY BUEN BIDEO,, UNA PREGUNTA NO LE PUEDO ALLAR LA FALLA AUNA CX,7 TURBO SE APAGA EN BAJA LE PUSE LA BOMBA DEL TANQUE Y SIGUE IGUAL NO SEMANTIENE NI EN 2000 REBOLUCIONES ,,, ASELERA SOLA MENTE ASTA LA MITAD DEL PEDAL,, NO ALLO QUE SEA SI ME PUDIERAS HORIENTAR PORFABOR

[@gonzalogutierrez8902]

Hola saul velaques yo tengo una falla igual y no le encuentro. Ya arreglate tu cx7 .que le cambiaste?

[@LuisCruz-ku6lh]

@@gonzalogutierrez8902 tambien mi Mazda esta fallando no mas no le hallamos ya se le cambio el MAF, Regulador, bomba de gasolina, sensor de oxigeno y nada no quiere encender y deja las bujias negras

[@maksymparker7752]

Did you have rough idle as well? Having similar issue and thinking its my hpfp. Car struggles gaining speed and misfires very bad. Plugs are new coils are new. Ive also noticed on my autel scanner the hpfp turns on off on off on off does yours do that as well or stays constantly on? Thank you

[@jamesparkerfpv435]

what did you find out? having same symptoms as you. thanks

[@MartinX192]

Im getting chatter from exactly that location, sounds almost like lifters at idle and under load a tinnie rattle but localized right there.

[@theeats5043]

Why are you replacing it? I’m not sure if mines bad.idk if it’s the hpfp that’s bad,but when I’m driving now testing it around the block.it runs ok.but as soon as I go to 2nd and car tries to boost.it falls on its face.like stops acceleration and starts popping .my exhaust . Idk if that hpfp or boost solenoid..I’ve change everything in that car so far.map sensor .crank sensor .mf sensor . Fuel rail sensor .can not figure it out.

[@FixItPhillip]

If it was me I would check the live data what the actual fuel pressure is at the rail and what the pcm desired fuel pressure is at, and compare the two and see if there is a noticeable difference in actual fp vs desired fp while the issue is happening, or any codes? Good luck with your vehicle

[@1970wheelhorse]

Hey man did you ever figure out the issue with the car? Im having the same issue as you

[@theeats5043]

@@1970wheelhorse yes..that plastic throttle clip was broken.even tho i rigged it like some forum said to do.just ended up replacing the whole part now it works

[@theeats5043]

@@1970wheelhorse dm me ig..fabian_rx7 Can send you a pic of it..

[@1970wheelhorse]

@@theeats5043 Awesome will do! I appreciate it!

[@mariom1090]

what is with the turkey, driving me nuts

[@FixItPhillip]

Wild chickens

[@jhonsalchijhon5992]

This foo wtf can't really tell that's a f#:;=%n ruster wtf

[@mariom1090]

@@jhonsalchijhon5992 hey dummy that was almost a year ago I asked the question and I’m not a farmer u moron

[@jhonsalchijhon5992]

@@mariom1090 but you are stupid can't even tell how a chicken sound wtf Jajajajaja

[@omarsalgadoportillo2602]

Quita la herramienta de arriba del motor no dejas ver bien lo que estas haciendo.