Help ASAP

jchammond · 05-08-2016, 08:51 PM

i've seen numerous manufacturers not set an engine code with low fuel pressure/no start....sometimes will throw a PO300 random misfire;because of it-but not always.
Never tried it on a Z; but other cars will run on brake cleaner,,,to eliminate an ignition failure.

Rusty · 05-08-2016, 08:55 PM

Quote:

Originally Posted by ZeeingAround

Engine warning light should come on with low fuel pressure, but I am not sure where it is measured. Check the fuel filter too.

No lights will come on with low fuel pressure. Been there, done that.

OP's fuel pump might be in the early stages of failure.

FairladyZ40th · 05-09-2016, 04:02 PM

Quote:

Originally Posted by Vichtz

Not really sure where to put this but I need help quickly. I have formation all week and go to ranger school in 7 days so really need to get this figured out before I go. Heres whats going on. Was driving car. Began to get clunky. Would accelerate but just barely. Sounded starved but I have a 3/4 tank. Finally died while driving.

No Codes are were thrown.
Checked radiator levels and all seems normal.
No rainbow reflection in coolant so dont think i blew a gasket.
Oil seemed low but I'm not convinced that would kill the engine while driving.
Battery is fine as all electrical systems work.
No leaks or liquids on ground.
Car will turn over sometimes, will start then die sometimes, or mixture of the 2. (see video)

Im really stumped on this one. I really need to get this fixed so any help would be great. Thanks a lot guys/gals.

Clean your MAF sensors and throttle bodies then do the idle relearn it helped my issue for the most part but definitely look into your fuel as well because a combo of the two will rain havoc haha codes don't show up and it's not a mech issue so yeah.

JARblue · 05-09-2016, 05:01 PM

Quote:

Originally Posted by Vichtz

The Z doesn't have a simple way to check fuel pressure does it? I need the adapter right?

Phunk sells a fuel pressure gauge that goes in the engine bay

CJM Mini FP Gauge Kit

Rusty · 05-09-2016, 08:24 PM

Quote:

Originally Posted by JARblue

Phunk sells a fuel pressure gauge that goes in the engine bay

CJM Mini FP Gauge Kit

When I had my fuel pressure problem. I install one of phunk's gauges.

I was the first one to do so.

There is no simple way to check fuel pressure on the Z.

Other then installing the gauge.

Ghostvette · 05-10-2016, 09:45 AM

Someone mentioned checking the fuel filter. Our car doesn't have an inline filter, so the only 'filter' is the one attached to the fuel pump in the tank. IMHO, if you are dropping the tank to look, might as well put a new pump and strainer in there. It seems silly to expend the time and effort to drop a gas tank just to inspect the strainer and not replace old parts.

My advice, can of seafoam in the tank, get some good gas (other than on post) and

Rusty · 05-10-2016, 02:08 PM

Like Ghost said. There is no inline filter. The filter is on the bottom of the pump. It's one of those nylon filter bag screens. That's the best way I can describe it. You don't have to drop the tank to get to it. Just move the passenger seat all the way forward, or remove it. Pop the cover off the flat shelf where the manual hides at with a flat screwdriver. Remove the insulation. Under that is the fuel pump.

barncobob · 05-10-2016, 03:06 PM

sounds like my old 65 sunbeam tiger, pump was RIGHT behind passenger seat

DeadM0nkey · 05-10-2016, 06:45 PM

I recently had these exact symptoms. The mechanic said the fuel pump had fallen off its bracket and was laying on its side in the tanks. This is why the gauge read half tank even though it was out of gas. Mechanic said he had never seen it before in his career.

Vichtz · 05-12-2016, 11:31 AM

Quote:

Originally Posted by DeadM0nkey

I recently had these exact symptoms. The mechanic said the fuel pump had fallen off its bracket and was laying on its side in the tanks. This is why the gauge read half tank even though it was out of gas. Mechanic said he had never seen it before in his career.

This is precisely what I was thinking but also didn't think it was possible without causing a leak. At any rate I'll just keep the car at 3/4 till ranger school Sunday. I'll definitely be looking further into this when I get back. Thanks a lot for all the help guys. Y'all really saved my bacon. As dumb as it is I never would have thought to put more gas in my car when it was 3/4 full haha. Appreciate you guys, thanks.

Rusty · 05-12-2016, 01:47 PM

Quote:

Originally Posted by DeadM0nkey

I recently had these exact symptoms. The mechanic said the fuel pump had fallen off its bracket and was laying on its side in the tanks. This is why the gauge read half tank even though it was out of gas. Mechanic said he had never seen it before in his career.

Ain't going to happen with a Z fuel pump. The pump sits down inside this white canister. Follow the black hose that makes a u-turn from the left side to the center. In the center is the fuel pump. Under it is the fuel pump screen. You can also see one of the level floats just to the right of the bottom of the canister.

SteveBad · 05-12-2016, 11:42 PM

I know this sounds whacky, but CHANGE THE BATTERY in the "intelligent key".

Had same symptoms........changed the key battery, instantly OK.

MagmaRed370z · 05-13-2016, 01:02 PM

Quote:

Originally Posted by SteveBad

I know this sounds whacky, but CHANGE THE BATTERY in the "intelligent key".

Had same symptoms........changed the key battery, instantly OK.

Nice! OP should try it. I would be funny to see if this resolves the issue

Vichtz · 05-13-2016, 02:05 PM

I actually tried that same day. No change.

05-08-2016, 08:51 PM	#16 (permalink)
jchammond A True Z Fanatic Join Date: Nov 2014 Location: South Carolina Age: 57 Posts: 15,204 Drives: 13’ 370Z TS 7A/T Rep Power: 2684394	i've seen numerous manufacturers not set an engine code with low fuel pressure/no start....sometimes will throw a PO300 random misfire;because of it-but not always. Never tried it on a Z; but other cars will run on brake cleaner,,,to eliminate an ignition failure. __________________ MazWorx built long block \| FI-TT-100 Stage 2.75 \| IPT built 7A/T http://www.the370z.com/members-370z-...s-musings.html

05-10-2016, 09:45 AM	#21 (permalink)
Ghostvette A True Z Fanatic Join Date: Aug 2013 Location: Shawnee KS Posts: 5,698 Drives: 15 Magma Red 6MT Rep Power: 2684376	Someone mentioned checking the fuel filter. Our car doesn't have an inline filter, so the only 'filter' is the one attached to the fuel pump in the tank. IMHO, if you are dropping the tank to look, might as well put a new pump and strainer in there. It seems silly to expend the time and effort to drop a gas tank just to inspect the strainer and not replace old parts. My advice, can of seafoam in the tank, get some good gas (other than on post) and __________________ 2015 Magma Red 6MT Sport Tech/2012 Fairlady MB 6MT Base (RIP 08032018)https://www.nicoclub.com/FSM/370Z/Coupe/

05-10-2016, 02:08 PM	#22 (permalink)
Rusty Ronin Samurai - Assassin Join Date: Dec 2011 Location: Fayettenam,Pennsyltucky Age: 68 Posts: 34,891 Drives: 2011 Nismo GM 6M Rep Power: 2684436	Like Ghost said. There is no inline filter. The filter is on the bottom of the pump. It's one of those nylon filter bag screens. That's the best way I can describe it. You don't have to drop the tank to get to it. Just move the passenger seat all the way forward, or remove it. Pop the cover off the flat shelf where the manual hides at with a flat screwdriver. Remove the insulation. Under that is the fuel pump. __________________ 浪人 - 殺し屋 "The Difficult Anytime, The Impossible By Appointment Only" http://www.the370z.com/members-370z-...o-journal.html

05-12-2016, 11:42 PM	#27 (permalink)
SteveBad Base Member Join Date: Jan 2013 Location: Lake Martin, Alabama Posts: 138 Drives: 2013 370Z 6 speed Rep Power: 248	I know this sounds whacky, but CHANGE THE BATTERY in the "intelligent key". Had same symptoms........changed the key battery, instantly OK. MagmaRed370z likes this. __________________ "Take the cannollis..." Last edited by SteveBad; 05-12-2016 at 11:52 PM.

05-13-2016, 02:05 PM	#29 (permalink)
Vichtz Track Member Join Date: May 2012 Location: Unknown Posts: 538 Drives: PG 09 Nissan 370z Rep Power: 13	I actually tried that same day. No change. __________________ очень быстро ... Stillen Gen 3 CAI// Stillen CBE// B&M SS with PWJDM Shift Knob// Custom OCC// Drilled/Slotted Rotors//Halo/painted Headlights// Under-hood dress up

05-10-2016, 03:06 PM	#23 (permalink)
barncobob A True Z Fanatic Join Date: Sep 2015 Location: hangtown, CA Posts: 1,164 Drives: 16 370Z auto Rep Power: 589	sounds like my old 65 sunbeam tiger, pump was RIGHT behind passenger seat

05-10-2016, 06:45 PM	#24 (permalink)
DeadM0nkey Base Member Join Date: Oct 2015 Location: Houston, TX Posts: 4 Drives: 2011 370z Sport Rep Power: 9	I recently had these exact symptoms. The mechanic said the fuel pump had fallen off its bracket and was laying on its side in the tanks. This is why the gauge read half tank even though it was out of gas. Mechanic said he had never seen it before in his career.

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